Vulnerability-Lookup

BDU:2026-11087 (CVE-2026-43133)

Vulnerability from fstec – Published: 2026-08-06 – Updated: 2026-09-01 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции vmload_vmsave_interception() модуля arch/x86/kvm/svm/svm.c подсистемы виртуализации на платформе x86 ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Summary

Уязвимость функции vmload_vmsave_interception() модуля arch/x86/kvm/svm/svm.c подсистемы виртуализации на платформе x86 ядра операционной системы Linux связана с возможностью целочисленного переполнения буфераю эксплуатация уязвимости может позволить нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Severity

5.7 (Medium) CVSS 2.0


                      
                        AV:L/AC:L/Au:S/C:P/I:P/A:C

7.9 (High) CVSS 3.1


                      
                        CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation, Timing and state manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-372 - Неполное распознавание внутреннего состояния
CWE-680 - Переполнение буфера в связи с целочисленным переполнением

Aliases

CVE-2026-43133

References

15 references

URL
https://www.cve.org/CVERecord?id=CVE-2026-43133
https://git.kernel.org/stable/c/10063e1251c1485034a018236080792ad083dcc5
https://git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c93539cd478a
https://git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1c26268fd
https://git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6adfc2e6c
https://git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d9423315a64
https://git.kernel.org/linus/127ccae2c185f62e6ecb4bf24f9cb307e9b9c619
https://git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b2283960f00543
https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0729SE38
https://access.redhat.com/security/cve/cve-2026-43133
https://ubuntu.com/security/CVE-2026-43133
https://security-tracker.debian.org/tracker/CVE-2026-43133
https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0806SE48
https://altsp.su/obnovleniya-bezopasnosti/
https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18

Impacted products

7 products from 6 vendors

Vendors

Red Hat, Inc., Canonical Ltd., Сообщество свободного программного обеспечения, АО «ИВК», ООО «РусБИТех-Астра»

Products

Red Hat Enterprise Linux, OpenShift Container Platform, Ubuntu, Debian GNU/Linux, АЛЬТ СП 10, Astra Linux Special Edition (запись в едином реестре российских программ №369), Linux

Versions

8 (Red Hat Enterprise Linux), 4 (OpenShift Container Platform), 20.04 LTS (Ubuntu), 12 (Debian GNU/Linux), 22.04 LTS (Ubuntu), 9 (Red Hat Enterprise Linux), - (АЛЬТ СП 10), 24.04 LTS (Ubuntu), 1.8 (Astra Linux Special Edition), 10 (Red Hat Enterprise Linux), 13 (Debian GNU/Linux), 3.8 (Astra Linux Special Edition), 4.8 (Astra Linux Special Edition), от 6.13 до 6.18.15 включительно (Linux), от 6.19 до 6.19.5 включительно (Linux), от 5.16 до 6.1.164 включительно (Linux), от 6.2 до 6.6.127 включительно (Linux), от 6.7 до 6.12.74 включительно (Linux), от 5.13 до 5.15.201 включительно (Linux)

Product types

Operating system, Application software

Platforms

Red Hat, Inc. Red Hat Enterprise Linux 8, Canonical Ltd. Ubuntu 20.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 12, Canonical Ltd. Ubuntu 22.04 LTS, Inc. Red Hat Enterprise Linux 9, АО «ИВК» АЛЬТ СП 10 -, Canonical Ltd. Ubuntu 24.04 LTS, ООО «РусБИТех-Астра» Astra Linux Special Edition 1.8 (запись в едином реестре российских программ №369), Inc. Red Hat Enterprise Linux 10, Сообщество свободного программного обеспечения Debian GNU/Linux 13, ООО «РусБИТех-Астра» Astra Linux Special Edition 3.8 (запись в едином реестре российских программ №369), ООО «РусБИТех-Астра» Astra Linux Special Edition 4.8 (запись в едином реестре российских программ №369), Сообщество свободного программного обеспечения Linux от 6.13 до 6.18.15 включительно, Сообщество свободного программного обеспечения Linux от 6.19 до 6.19.5 включительно, Сообщество свободного программного обеспечения Linux от 5.16 до 6.1.164 включительно, Сообщество свободного программного обеспечения Linux от 6.2 до 6.6.127 включительно, Сообщество свободного программного обеспечения Linux от 6.7 до 6.12.74 включительно, Сообщество свободного программного обеспечения Linux от 5.13 до 5.15.201 включительно

Mitigations

В условиях отсутствия обновлений безопасности от производителя рекомендуется придерживаться "Рекомендаций по безопасной настройке операционных систем LINUX", изложенных в методическом документе ФСТЭК России, утверждённом 25 декабря 2022 года. Использование рекомендаций: Для Linux: https://git.kernel.org/stable/c/10063e1251c1485034a018236080792ad083dcc5 https://git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c93539cd478a https://git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1c26268fd https://git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6adfc2e6c https://git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d9423315a64 https://git.kernel.org/linus/127ccae2c185f62e6ecb4bf24f9cb307e9b9c619 https://git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b2283960f00543 Для ОС Astra Linux: обновить пакет linux-6.1 до 6.1.166-1.astra1+ci24 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0729SE38 Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2026-43133 Для Ubuntu: https://ubuntu.com/security/CVE-2026-43133 Для программных продуктов Red Hat Inc.: https://access.redhat.com/security/cve/cve-2026-43133 Для ОС Astra Linux: - обновить пакет linux-6.12 до 6.12.77-1.astra1+ci36 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0806SE48 - обновить пакет linux-6.1 до 6.1.166-1.astra1+ci24 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0806SE48 Для ОС АЛЬТ СП 10: установка обновления из публичного репозитория программного средства: https://altsp.su/obnovleniya-bezopasnosti/ Для ОС Astra Linux: - обновить пакет linux-6.1 до 6.1.166-1.astra1+ci24 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18 - обновить пакет linux-6.12 до 6.12.77-1.astra1+ci36 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18 Для ОС Astra Linux: - обновить пакет linux-6.1 до 6.1.166-1.astra1+ci24 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18 - обновить пакет linux-6.12 до 6.12.77-1.astra1+ci36 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18

JSON

To clipboard

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  "CVSS 2.0": "AV:L/AC:L/Au:S/C:P/I:P/A:C",
  "CVSS 3.0": "AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
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  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Red Hat, Inc., Canonical Ltd., \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb, \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "8 (Red Hat Enterprise Linux), 4 (OpenShift Container Platform), 20.04 LTS (Ubuntu), 12 (Debian GNU/Linux), 22.04 LTS (Ubuntu), 9 (Red Hat Enterprise Linux), - (\u0410\u041b\u042c\u0422 \u0421\u041f 10), 24.04 LTS (Ubuntu), 1.8 (Astra Linux Special Edition), 10 (Red Hat Enterprise Linux), 13 (Debian GNU/Linux), 3.8 (Astra Linux Special Edition), 4.8 (Astra Linux Special Edition), \u043e\u0442 6.13 \u0434\u043e 6.18.15 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 6.19 \u0434\u043e 6.19.5 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.16 \u0434\u043e 6.1.164 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 6.2 \u0434\u043e 6.6.127 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 6.7 \u0434\u043e 6.12.74 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.13 \u0434\u043e 5.15.201 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0412 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0438\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \"\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u043e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c LINUX\", \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0432 \u043c\u0435\u0442\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0435 \u0424\u0421\u0422\u042d\u041a \u0420\u043e\u0441\u0441\u0438\u0438, \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0451\u043d\u043d\u043e\u043c 25 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2022 \u0433\u043e\u0434\u0430.\n\n\n\n\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\n\u0414\u043b\u044f Linux:\nhttps://git.kernel.org/stable/c/10063e1251c1485034a018236080792ad083dcc5\nhttps://git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c93539cd478a\nhttps://git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1c26268fd\nhttps://git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6adfc2e6c\nhttps://git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d9423315a64\nhttps://git.kernel.org/linus/127ccae2c185f62e6ecb4bf24f9cb307e9b9c619\nhttps://git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b2283960f00543\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n\u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.1 \u0434\u043e 6.1.166-1.astra1+ci24 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0729SE38\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2026-43133\n\n\u0414\u043b\u044f Ubuntu:\nhttps://ubuntu.com/security/CVE-2026-43133\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\nhttps://access.redhat.com/security/cve/cve-2026-43133\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.12 \u0434\u043e 6.12.77-1.astra1+ci36 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0806SE48\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.1 \u0434\u043e 6.1.166-1.astra1+ci24 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0806SE48\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u041b\u042c\u0422 \u0421\u041f 10: \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0437 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e\u0433\u043e \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430: https://altsp.su/obnovleniya-bezopasnosti/\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.1 \u0434\u043e 6.1.166-1.astra1+ci24 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.12 \u0434\u043e 6.12.77-1.astra1+ci36 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.1 \u0434\u043e 6.1.166-1.astra1+ci24 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.12 \u0434\u043e 6.12.77-1.astra1+ci36 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "14.01.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "01.09.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "06.08.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-11087",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2026-43133",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Red Hat Enterprise Linux, OpenShift Container Platform, Ubuntu, Debian GNU/Linux, \u0410\u041b\u042c\u0422 \u0421\u041f 10, Astra Linux Special Edition (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Linux",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Red Hat, Inc. Red Hat Enterprise Linux 8 , Canonical Ltd. Ubuntu 20.04 LTS , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 12 , Canonical Ltd. Ubuntu 22.04 LTS , Red Hat, Inc. Red Hat Enterprise Linux 9 , \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb \u0410\u041b\u042c\u0422 \u0421\u041f 10 - , Canonical Ltd. Ubuntu 24.04 LTS , \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 1.8  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Red Hat, Inc. Red Hat Enterprise Linux 10 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 13 , \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 3.8  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 4.8  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 6.13 \u0434\u043e 6.18.15 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 6.19 \u0434\u043e 6.19.5 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.16 \u0434\u043e 6.1.164 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 6.2 \u0434\u043e 6.6.127 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 6.7 \u0434\u043e 6.12.74 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.13 \u0434\u043e 5.15.201 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e ",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 vmload_vmsave_interception() \u043c\u043e\u0434\u0443\u043b\u044f arch/x86/kvm/svm/svm.c \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043d\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435 x86 \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043f\u043e\u043b\u043d\u043e\u0435 \u0440\u0430\u0441\u043f\u043e\u0437\u043d\u0430\u0432\u0430\u043d\u0438\u0435 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0433\u043e \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f (CWE-372), \u041f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 \u0441\u0432\u044f\u0437\u0438 \u0441 \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u044b\u043c \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435\u043c (CWE-680)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 vmload_vmsave_interception() \u043c\u043e\u0434\u0443\u043b\u044f arch/x86/kvm/svm/svm.c \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043d\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435 x86 \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0431\u0443\u0444\u0435\u0440\u0430\u044e \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445, \u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0440\u043e\u043a\u0430\u043c\u0438 \u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://www.cve.org/CVERecord?id=CVE-2026-43133\nhttps://git.kernel.org/stable/c/10063e1251c1485034a018236080792ad083dcc5\nhttps://git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c93539cd478a\nhttps://git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1c26268fd\nhttps://git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6adfc2e6c\nhttps://git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d9423315a64\nhttps://git.kernel.org/linus/127ccae2c185f62e6ecb4bf24f9cb307e9b9c619\nhttps://git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b2283960f00543\nhttps://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0729SE38\nhttps://access.redhat.com/security/cve/cve-2026-43133\nhttps://ubuntu.com/security/CVE-2026-43133\nhttps://security-tracker.debian.org/tracker/CVE-2026-43133\nhttps://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0806SE48\nhttps://altsp.su/obnovleniya-bezopasnosti/\nhttps://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18\nhttps://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0626SE18",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-372, CWE-680",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,7)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,9)"
}

CVE-2026-43133 (GCVE-0-2026-43133)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-09-15 12:04

Title

KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation Commit cc3ed80ae69f ("KVM: nSVM: always use vmcb01 to for vmsave/vmload of guest state") made KVM always use vmcb01 for the fields controlled by VMSAVE/VMLOAD, but it missed updating the VMLOAD/VMSAVE emulation code to always use vmcb01. As a result, if VMSAVE/VMLOAD is executed by an L2 guest and is not intercepted by L1, KVM will mistakenly use vmcb02. Always use vmcb01 instead of the current VMCB.

Severity

7.9 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

CWE

CWE-628 - Function Call with Incorrectly Specified Arguments

Assigner

Linux mitre root

References

15 references

URL	Tags
https://git.kernel.org/stable/c/10063e1251c148503…
https://git.kernel.org/stable/c/c3b7015000988ba35…
https://git.kernel.org/stable/c/3880e331b0b31d0d5…
https://git.kernel.org/stable/c/fce2fd4a2ca05670a…
https://git.kernel.org/stable/c/d464cf1ed900d47c8…
https://git.kernel.org/stable/c/0004ecb798b30e90d…
https://git.kernel.org/stable/c/127ccae2c185f62e6…
https://access.redhat.com/security/cve/CVE-2026-43133	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2467065	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:66357	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65334	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:66180	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:67468	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:67469	vendor-advisoryx_refsource_REDHAT

Impacted products

10 products

Vendor	Product	Version
Linux	Linux	Affected: cc3ed80ae69f454c3d904af9f65394a540099723 , < 10063e1251c1485034a018236080792ad083dcc5 (git) Affected: cc3ed80ae69f454c3d904af9f65394a540099723 , < c3b7015000988ba35ecd5648f4b2283960f00543 (git) Affected: cc3ed80ae69f454c3d904af9f65394a540099723 , < 3880e331b0b31d0d5d3702b124f6c93539cd478a (git) Affected: cc3ed80ae69f454c3d904af9f65394a540099723 , < fce2fd4a2ca05670a91015aacccf96a1c26268fd (git) Affected: cc3ed80ae69f454c3d904af9f65394a540099723 , < d464cf1ed900d47c85393d40b00017b6adfc2e6c (git) Affected: cc3ed80ae69f454c3d904af9f65394a540099723 , < 0004ecb798b30e90d7ebfe74efae2d9423315a64 (git) Affected: cc3ed80ae69f454c3d904af9f65394a540099723 , < 127ccae2c185f62e6ecb4bf24f9cb307e9b9c619 (git)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.202 , ≤ 5.15.* (semver) Unaffected: 6.1.165 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:6.12.0-211.53.1.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-687.46.1.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Show details on NVD website

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{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10.2"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 10",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:6.12.0-211.53.1.el10_2",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:9",
              "cpe:/o:redhat:enterprise_linux:9"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 9",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:5.14.0-687.46.1.el9_8",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10"
            ],
            "defaultStatus": "unaffected",
            "packageName": "libkrun",
            "product": "Red Hat Enterprise Linux 10",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:6"
            ],
            "defaultStatus": "unaffected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 6",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
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            "cpes": [
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            "product": "Red Hat Enterprise Linux 7",
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            "cpes": [
              "cpe:/o:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel-rt",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:9"
            ],
            "defaultStatus": "unknown",
            "packageName": "kernel-rt",
            "product": "Red Hat Enterprise Linux 9",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift:4"
            ],
            "defaultStatus": "affected",
            "packageName": "openshift/ose-rhel-coreos-8",
            "product": "Red Hat OpenShift Container Platform 4",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift:4"
            ],
            "defaultStatus": "affected",
            "packageName": "openshift/ose-rhel-coreos-9",
            "product": "Red Hat OpenShift Container Platform 4",
            "vendor": "Red Hat"
          }
        ],
        "datePublic": "2026-05-06T00:00:00.000Z",
        "descriptions": [
          {
            "lang": "en",
            "value": "A flaw was found in the Linux kernel\u0027s Kernel-based Virtual Machine (KVM) nSVM module. When a nested virtual machine (L2 guest) executes VMSAVE/VMLOAD instructions, and these are not intercepted by the first-level hypervisor (L1), KVM incorrectly uses `vmcb02` instead of `vmcb01` for managing guest state. This incorrect Virtual Machine Control Block (VMCB) handling could lead to unexpected behavior or state corruption within the virtualized environment."
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "namespace": "https://access.redhat.com/security/updates/classification/",
                "value": "Important"
              },
              "type": "Red Hat severity rating"
            }
          },
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.9,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "LOW",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H",
              "version": "3.1"
            },
            "format": "CVSS"
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-628",
                "description": "Function Call with Incorrectly Specified Arguments",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-15T12:04:27.795Z",
          "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "shortName": "redhat-SADP"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2026-43133"
          },
          {
            "name": "RHBZ#2467065",
            "tags": [
              "issue-tracking",
              "x_refsource_REDHAT"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467065"
          },
          {
            "tags": [
              "x_sadp-csaf-vex"
            ],
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43133.json"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:66357"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:65334"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:66180"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:67468"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:67469"
          }
        ],
        "solutions": [
          {
            "lang": "en",
            "value": "RHSA-2026:66357: Red Hat OpenShift Container Platform 4.22"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:65334: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Real Time (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:66180: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:67468: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8)"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:67469: Red Hat Enterprise Linux NFV (v. 8), Red Hat Enterprise Linux RT (v. 8)"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-05-06T00:00:00.000Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-05-06T00:00:00.000Z",
            "value": "Made public."
          }
        ],
        "title": "kernel: KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation",
        "workarounds": [
          {
            "lang": "en",
            "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
          }
        ],
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/svm/svm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "10063e1251c1485034a018236080792ad083dcc5",
              "status": "affected",
              "version": "cc3ed80ae69f454c3d904af9f65394a540099723",
              "versionType": "git"
            },
            {
              "lessThan": "c3b7015000988ba35ecd5648f4b2283960f00543",
              "status": "affected",
              "version": "cc3ed80ae69f454c3d904af9f65394a540099723",
              "versionType": "git"
            },
            {
              "lessThan": "3880e331b0b31d0d5d3702b124f6c93539cd478a",
              "status": "affected",
              "version": "cc3ed80ae69f454c3d904af9f65394a540099723",
              "versionType": "git"
            },
            {
              "lessThan": "fce2fd4a2ca05670a91015aacccf96a1c26268fd",
              "status": "affected",
              "version": "cc3ed80ae69f454c3d904af9f65394a540099723",
              "versionType": "git"
            },
            {
              "lessThan": "d464cf1ed900d47c85393d40b00017b6adfc2e6c",
              "status": "affected",
              "version": "cc3ed80ae69f454c3d904af9f65394a540099723",
              "versionType": "git"
            },
            {
              "lessThan": "0004ecb798b30e90d7ebfe74efae2d9423315a64",
              "status": "affected",
              "version": "cc3ed80ae69f454c3d904af9f65394a540099723",
              "versionType": "git"
            },
            {
              "lessThan": "127ccae2c185f62e6ecb4bf24f9cb307e9b9c619",
              "status": "affected",
              "version": "cc3ed80ae69f454c3d904af9f65394a540099723",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/svm/svm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.202",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.202",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.165",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.6",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation\n\nCommit cc3ed80ae69f (\"KVM: nSVM: always use vmcb01 to for vmsave/vmload\nof guest state\") made KVM always use vmcb01 for the fields controlled by\nVMSAVE/VMLOAD, but it missed updating the VMLOAD/VMSAVE emulation code\nto always use vmcb01.\n\nAs a result, if VMSAVE/VMLOAD is executed by an L2 guest and is not\nintercepted by L1, KVM will mistakenly use vmcb02. Always use vmcb01\ninstead of the current VMCB."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.9,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is reached by locally running a KVM vCPU through /dev/kvm and executing nested SVM VMLOAD/VMSAVE from an L2 guest; it is not reachable via network packets.\nAC:L - The trigger is deterministic once nested SVM is available: configure L1 not to intercept VMLOAD/VMSAVE and execute the instruction in L2. No race or attacker-uncontrolled timing condition is required.\nPR:L - The attacker needs the ability to create/run a KVM VM or execute code in a nested guest, which is local low privilege where /dev/kvm is delegated. No real init-namespace root capability is required by the vulnerable emulation path itself.\nUI:N - After the VM/nested guest is running, exploitation is triggered solely by guest instruction execution. No additional victim user action is required.\nS:C - The bug is in KVM\u2019s enforcement of the nested virtualization boundary, where L2 execution causes KVM to operate on the wrong L0-maintained VMCB state. That can affect resources outside the L2 guest\u2019s own security authority.\nC:L - VMSAVE can copy bounded VMLOAD/VMSAVE save-state fields from the wrong internal VMCB into guest-accessible memory. I did not identify an arbitrary host-memory read primitive, so the defensible confidentiality impact is limited.\nI:L - VMLOAD can corrupt a bounded set of VMLOAD/VMSAVE state fields in the wrong KVM VMCB, causing incorrect nested guest/L1 state handling. I did not find a direct arbitrary host write or host code execution primitive.\nA:H - The wrong VMCB state can make nested VM execution fail or crash/hang the affected virtual machine/vCPU, and the attacker can trigger it repeatedly. This is a complete availability impact for the affected nested virtualization workload, even though I did not find a host kernel panic path."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:26:09.214Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/10063e1251c1485034a018236080792ad083dcc5"
        },
        {
          "url": "https://git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b2283960f00543"
        },
        {
          "url": "https://git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c93539cd478a"
        },
        {
          "url": "https://git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1c26268fd"
        },
        {
          "url": "https://git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6adfc2e6c"
        },
        {
          "url": "https://git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d9423315a64"
        },
        {
          "url": "https://git.kernel.org/stable/c/127ccae2c185f62e6ecb4bf24f9cb307e9b9c619"
        }
      ],
      "title": "KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43133",
    "datePublished": "2026-05-06T11:27:20.882Z",
    "dateReserved": "2026-05-01T14:12:55.988Z",
    "dateUpdated": "2026-09-15T12:04:27.795Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

BDU:2026-11087 (CVE-2026-43133)

CVE-2026-43133 (GCVE-0-2026-43133)

Tags

Sightings

Nomenclature

Related by attack behaviour