Vulnerability-Lookup

BDU:2026-03108 (CVE-2022-49768)

Vulnerability from fstec – Published: 2026-03-16 – Updated: 2026-03-16 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции p9_conn_cancel() модуля net/9p/trans_fd.c ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции p9_conn_cancel() модуля net/9p/trans_fd.c ядра операционной системы Linux связана с недостаточной блокировкой ресурса. Эксплуатация уязвимости может позволить нарушителю вызвать отказ в обслуживании

Severity

4.6 (Medium) CVSS 2.0


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

5.5 (Medium) CVSS 3.1


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Timing and state manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-413 - Неправильное блокирование ресурсов
CWE-667 - Недостаточная блокировка

Aliases

CVE-2022-49768

References

19 references

URL
https://git.kernel.org/stable/c/fec1406f5e7ab20b71f6d231792b0040e3300aaf
https://git.kernel.org/stable/c/a4f1a01b2e81378fce9ca528d4d8a049e4b58fcd
https://git.kernel.org/stable/c/f14858bc77c567e089965962877ee726ffad0556
https://git.kernel.org/stable/c/612c977f5d481f551d03d83d0aef588845c1300c
https://git.kernel.org/stable/c/e3031280fe4eaf61a09e60823331f81f321be8e1
https://git.kernel.org/stable/c/82825dbf393f7c7979d462f9609a15bde8092b3f
https://git.kernel.org/stable/c/96760723aae1b45f733f702abb4333137143909f
https://www.cve.org/CVERecord?id=CVE-2022-49768
https://git.kernel.org/linus/52f1c45dde9136f964d63a77d19826c8a74e2c7f
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.334
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.300
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.267
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.225
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.156
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.80
https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.10
https://lore.kernel.org/linux-cve-announce/2025050114-CVE-2022-49768-d9af@gregkh/
https://security-tracker.debian.org/tracker/CVE-2022-49768
https://access.redhat.com/security/cve/cve-2022-49768

Impacted products

2 products from 1 vendor

Vendors

Сообщество свободного программного обеспечения

Products

Debian GNU/Linux, Linux

Versions

11 (Debian GNU/Linux), от 5.5 до 5.10.155 включительно (Linux), от 5.11 до 5.15.79 включительно (Linux), от 5.16 до 6.0.9 включительно (Linux), от 4.20 до 5.4.224 включительно (Linux), от 4.9.127 до 4.9.333 включительно (Linux), от 4.14.70 до 4.14.299 включительно (Linux), от 4.18.8 до 4.19.266 включительно (Linux)

Product types

Operating system

Platforms

Сообщество свободного программного обеспечения Debian GNU/Linux 11, Сообщество свободного программного обеспечения Linux от 5.5 до 5.10.155 включительно, Сообщество свободного программного обеспечения Linux от 5.11 до 5.15.79 включительно, Сообщество свободного программного обеспечения Linux от 5.16 до 6.0.9 включительно, Сообщество свободного программного обеспечения Linux от 4.20 до 5.4.224 включительно, Сообщество свободного программного обеспечения Linux от 4.9.127 до 4.9.333 включительно, Сообщество свободного программного обеспечения Linux от 4.14.70 до 4.14.299 включительно, Сообщество свободного программного обеспечения Linux от 4.18.8 до 4.19.266 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://lore.kernel.org/linux-cve-announce/2025050114-CVE-2022-49768-d9af@gregkh/ https://git.kernel.org/stable/c/fec1406f5e7ab20b71f6d231792b0040e3300aaf https://git.kernel.org/stable/c/a4f1a01b2e81378fce9ca528d4d8a049e4b58fcd https://git.kernel.org/stable/c/f14858bc77c567e089965962877ee726ffad0556 https://git.kernel.org/stable/c/612c977f5d481f551d03d83d0aef588845c1300c https://git.kernel.org/stable/c/e3031280fe4eaf61a09e60823331f81f321be8e1 https://git.kernel.org/stable/c/82825dbf393f7c7979d462f9609a15bde8092b3f https://git.kernel.org/stable/c/96760723aae1b45f733f702abb4333137143909f https://git.kernel.org/linus/52f1c45dde9136f964d63a77d19826c8a74e2c7f https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.334 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.300 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.267 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.225 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.156 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.80 https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.10 Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2022-49768

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:L/Au:S/C:N/I:N/A:C",
  "CVSS 3.0": "AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "\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",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "11 (Debian GNU/Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.155 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11 \u0434\u043e 5.15.79 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.16 \u0434\u043e 6.0.9 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.20 \u0434\u043e 5.4.224 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.9.127 \u0434\u043e 4.9.333 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.14.70 \u0434\u043e 4.14.299 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.18.8 \u0434\u043e 4.19.266 \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://lore.kernel.org/linux-cve-announce/2025050114-CVE-2022-49768-d9af@gregkh/\nhttps://git.kernel.org/stable/c/fec1406f5e7ab20b71f6d231792b0040e3300aaf\nhttps://git.kernel.org/stable/c/a4f1a01b2e81378fce9ca528d4d8a049e4b58fcd\nhttps://git.kernel.org/stable/c/f14858bc77c567e089965962877ee726ffad0556\nhttps://git.kernel.org/stable/c/612c977f5d481f551d03d83d0aef588845c1300c\nhttps://git.kernel.org/stable/c/e3031280fe4eaf61a09e60823331f81f321be8e1\nhttps://git.kernel.org/stable/c/82825dbf393f7c7979d462f9609a15bde8092b3f\nhttps://git.kernel.org/stable/c/96760723aae1b45f733f702abb4333137143909f\nhttps://git.kernel.org/linus/52f1c45dde9136f964d63a77d19826c8a74e2c7f\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.334\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.300\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.267\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.225\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.156\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.80\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.10\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2022-49768",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "17.08.2022",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "16.03.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "16.03.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-03108",
  "\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-2022-49768",
  "\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": "Debian GNU/Linux, 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": "\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 11 , \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 5.5 \u0434\u043e 5.10.155 \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 5.11 \u0434\u043e 5.15.79 \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 6.0.9 \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 4.20 \u0434\u043e 5.4.224 \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 4.9.127 \u0434\u043e 4.9.333 \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 4.14.70 \u0434\u043e 4.14.299 \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 4.18.8 \u0434\u043e 4.19.266 \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 p9_conn_cancel() \u043c\u043e\u0434\u0443\u043b\u044f net/9p/trans_fd.c \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 \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\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\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u0435 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 (CWE-413), \u041d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u0430\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0430 (CWE-667)",
  "\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 p9_conn_cancel() \u043c\u043e\u0434\u0443\u043b\u044f net/9p/trans_fd.c \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 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e\u0439 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u043e\u0439 \u0440\u0435\u0441\u0443\u0440\u0441\u0430. \u042d\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 \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\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\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://git.kernel.org/stable/c/fec1406f5e7ab20b71f6d231792b0040e3300aaf\nhttps://git.kernel.org/stable/c/a4f1a01b2e81378fce9ca528d4d8a049e4b58fcd\nhttps://git.kernel.org/stable/c/f14858bc77c567e089965962877ee726ffad0556\nhttps://git.kernel.org/stable/c/612c977f5d481f551d03d83d0aef588845c1300c\nhttps://git.kernel.org/stable/c/e3031280fe4eaf61a09e60823331f81f321be8e1\nhttps://git.kernel.org/stable/c/82825dbf393f7c7979d462f9609a15bde8092b3f\nhttps://git.kernel.org/stable/c/96760723aae1b45f733f702abb4333137143909f\nhttps://www.cve.org/CVERecord?id=CVE-2022-49768\nhttps://git.kernel.org/linus/52f1c45dde9136f964d63a77d19826c8a74e2c7f\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.334\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.300\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.267\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.225\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.156\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.80\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.10\nhttps://lore.kernel.org/linux-cve-announce/2025050114-CVE-2022-49768-d9af@gregkh/\nhttps://security-tracker.debian.org/tracker/CVE-2022-49768\nhttps://access.redhat.com/security/cve/cve-2022-49768",
  "\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",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-413, CWE-667",
  "\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 4,6)\n\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 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,5)"
}

CVE-2022-49768 (GCVE-0-2022-49768)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-08-05 08:56

Title

9p: trans_fd/p9_conn_cancel: drop client lock earlier

Summary

In the Linux kernel, the following vulnerability has been resolved: 9p: trans_fd/p9_conn_cancel: drop client lock earlier syzbot reported a double-lock here and we no longer need this lock after requests have been moved off to local list: just drop the lock earlier.

Severity

7.5 (High)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/82825dbf393f7c797…
https://git.kernel.org/stable/c/e3031280fe4eaf61a…
https://git.kernel.org/stable/c/fec1406f5e7ab20b7…
https://git.kernel.org/stable/c/96760723aae1b45f7…
https://git.kernel.org/stable/c/f14858bc77c567e08…
https://git.kernel.org/stable/c/a4f1a01b2e81378fc…
https://git.kernel.org/stable/c/612c977f5d481f551…
https://git.kernel.org/stable/c/52f1c45dde9136f96…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: eb1ca07f4343b4e58b97e792a85d5ba1ba103f5d , < 82825dbf393f7c7979d462f9609a15bde8092b3f (git) Affected: 4cd195263e420311d31451cc053fde8037f326f1 , < e3031280fe4eaf61a09e60823331f81f321be8e1 (git) Affected: 9f476d7c540cb57556d3cc7e78704e6cd5100f5f , < fec1406f5e7ab20b71f6d231792b0040e3300aaf (git) Affected: 9f476d7c540cb57556d3cc7e78704e6cd5100f5f , < 96760723aae1b45f733f702abb4333137143909f (git) Affected: 9f476d7c540cb57556d3cc7e78704e6cd5100f5f , < f14858bc77c567e089965962877ee726ffad0556 (git) Affected: 9f476d7c540cb57556d3cc7e78704e6cd5100f5f , < a4f1a01b2e81378fce9ca528d4d8a049e4b58fcd (git) Affected: 9f476d7c540cb57556d3cc7e78704e6cd5100f5f , < 612c977f5d481f551d03d83d0aef588845c1300c (git) Affected: 9f476d7c540cb57556d3cc7e78704e6cd5100f5f , < 52f1c45dde9136f964d63a77d19826c8a74e2c7f (git) Affected: 91ca7c5644c370dc5132b1db1aea81416a4b2181 (git) Affected: 4.9.127 , < 4.9.334 (semver) Affected: 4.14.70 , < 4.14.300 (semver) Affected: 4.18.8 , < 4.19 (semver)
Linux	Linux	Affected: 4.19 Unaffected: 0 , < 4.19 (semver) Unaffected: 4.9.334 , ≤ 4.9.* (semver) Unaffected: 4.14.300 , ≤ 4.14.* (semver) Unaffected: 4.19.267 , ≤ 4.19.* (semver) Unaffected: 5.4.225 , ≤ 5.4.* (semver) Unaffected: 5.10.156 , ≤ 5.10.* (semver) Unaffected: 5.15.80 , ≤ 5.15.* (semver) Unaffected: 6.0.10 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/9p/trans_fd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "82825dbf393f7c7979d462f9609a15bde8092b3f",
              "status": "affected",
              "version": "eb1ca07f4343b4e58b97e792a85d5ba1ba103f5d",
              "versionType": "git"
            },
            {
              "lessThan": "e3031280fe4eaf61a09e60823331f81f321be8e1",
              "status": "affected",
              "version": "4cd195263e420311d31451cc053fde8037f326f1",
              "versionType": "git"
            },
            {
              "lessThan": "fec1406f5e7ab20b71f6d231792b0040e3300aaf",
              "status": "affected",
              "version": "9f476d7c540cb57556d3cc7e78704e6cd5100f5f",
              "versionType": "git"
            },
            {
              "lessThan": "96760723aae1b45f733f702abb4333137143909f",
              "status": "affected",
              "version": "9f476d7c540cb57556d3cc7e78704e6cd5100f5f",
              "versionType": "git"
            },
            {
              "lessThan": "f14858bc77c567e089965962877ee726ffad0556",
              "status": "affected",
              "version": "9f476d7c540cb57556d3cc7e78704e6cd5100f5f",
              "versionType": "git"
            },
            {
              "lessThan": "a4f1a01b2e81378fce9ca528d4d8a049e4b58fcd",
              "status": "affected",
              "version": "9f476d7c540cb57556d3cc7e78704e6cd5100f5f",
              "versionType": "git"
            },
            {
              "lessThan": "612c977f5d481f551d03d83d0aef588845c1300c",
              "status": "affected",
              "version": "9f476d7c540cb57556d3cc7e78704e6cd5100f5f",
              "versionType": "git"
            },
            {
              "lessThan": "52f1c45dde9136f964d63a77d19826c8a74e2c7f",
              "status": "affected",
              "version": "9f476d7c540cb57556d3cc7e78704e6cd5100f5f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "91ca7c5644c370dc5132b1db1aea81416a4b2181",
              "versionType": "git"
            },
            {
              "lessThan": "4.9.334",
              "status": "affected",
              "version": "4.9.127",
              "versionType": "semver"
            },
            {
              "lessThan": "4.14.300",
              "status": "affected",
              "version": "4.14.70",
              "versionType": "semver"
            },
            {
              "lessThan": "4.19",
              "status": "affected",
              "version": "4.18.8",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/9p/trans_fd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "lessThan": "4.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.334",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.300",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.267",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.225",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.156",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.334",
                  "versionStartIncluding": "4.9.127",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.300",
                  "versionStartIncluding": "4.14.70",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.267",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.225",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.156",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.80",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.10",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.18.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\n9p: trans_fd/p9_conn_cancel: drop client lock earlier\n\nsyzbot reported a double-lock here and we no longer need this\nlock after requests have been moved off to local list:\njust drop the lock earlier."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The recursive deadlock is reached from p9_read_work()/p9_poll_mux() on the TCP (and unix) fd transport when processing peer-driven I/O errors or malformed replies; a remote malicious 9p server can close the connection or send bad headers/tags over the established TCP session to enter p9_conn_cancel().\nAC:L - After a request is fully written the writer has already put its ref, leaving the waiting client with refcount 1; the remote peer can then deterministically force cancel (ECONNRESET, bad header, unexpected tag), so p9_client_cb()\u0027s final p9_req_put() re-takes client-\u003elock with no race outside attacker control.\nPR:N - The attacker is the remote 9p server and needs no credentials or capabilities on the client; reply/error handling on the transport runs without authentication or privilege checks, matching other trans_fd peer-driven 9p client bugs.\nUI:N - Exploitation rides an already-configured or automounted 9p TCP session and server-driven errors/replies; the mount is a deployment precondition, not a required victim action beyond ordinary use of that mount.\nS:U - Impact is a host-kernel deadlock inside the 9p client on the same OS security authority; there is no VM escape, IOMMU bypass, or other cross-boundary effect.\nC:N - This is a pure recursive spinlock deadlock (p9_conn_cancel \u2192 p9_client_cb \u2192 p9_req_put \u2192 p9_tag_remove on the same client-\u003elock); it does not free early, leak, or otherwise disclose kernel memory.\nI:N - There is no memory corruption, UAF, or write primitive\u2014only nested acquisition of the same non-recursive spinlock\u2014so control-flow hijack or arbitrary modification is not available.\nA:H - Re-taking client-\u003elock while already holding it deadlocks the p9_read_work kworker with preemption disabled, hangs all further 9p operations on that client, and can soft-lockup the CPU; syzbot reported the recursive lock in p9_req_put from this path."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:56:16.608Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/82825dbf393f7c7979d462f9609a15bde8092b3f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e3031280fe4eaf61a09e60823331f81f321be8e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/fec1406f5e7ab20b71f6d231792b0040e3300aaf"
        },
        {
          "url": "https://git.kernel.org/stable/c/96760723aae1b45f733f702abb4333137143909f"
        },
        {
          "url": "https://git.kernel.org/stable/c/f14858bc77c567e089965962877ee726ffad0556"
        },
        {
          "url": "https://git.kernel.org/stable/c/a4f1a01b2e81378fce9ca528d4d8a049e4b58fcd"
        },
        {
          "url": "https://git.kernel.org/stable/c/612c977f5d481f551d03d83d0aef588845c1300c"
        },
        {
          "url": "https://git.kernel.org/stable/c/52f1c45dde9136f964d63a77d19826c8a74e2c7f"
        }
      ],
      "title": "9p: trans_fd/p9_conn_cancel: drop client lock earlier",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49768",
    "datePublished": "2025-05-01T14:09:06.864Z",
    "dateReserved": "2025-04-16T07:17:33.804Z",
    "dateUpdated": "2026-08-05T08:56:16.608Z",
    "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.

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:2026-03108 (CVE-2022-49768)

CVE-2022-49768 (GCVE-0-2022-49768)

Tags

Sightings

Nomenclature

Related by attack behaviour