Vulnerability-Lookup

BDU:2024-01723 (CVE-2021-46905)

Vulnerability from fstec – Published: 2024-03-04 – Updated: 2024-12-06 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции hso_serial_tty_unregister драйвера USB HSO (High Speed Options) ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции hso_serial_tty_unregister драйвера USB HSO (High Speed Options) ядра операционной системы Linux связана с ошибкой разыменования указателя. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, 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 3.0


                      
                        CVSS:3.0/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

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-476 - Разыменование указателя NULL

Aliases

CVE-2021-46905

References

24 references

URL
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46905
https://git.kernel.org/linus/2ad5692db72874f02b9ad551d26345437ea4f7f3
https://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e
https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00
https://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1
https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3
https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef
https://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554
https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725
https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273
https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.232
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.189
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.268
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.268
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.33
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.17
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.1
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.115
https://lore.kernel.org/linux-cve-announce/2024022557-CVE-2021-46905-6507@gregkh/
https://lore.kernel.org/linux-cve-announce/2024022557-CVE-2021-46905-6507@gregkh/T/#u
https://security-tracker.debian.org/tracker/CVE-2021-46905
https://vuldb.com/?id.254720
https://www.cve.org/CVERecord?id=CVE-2021-46905

Impacted products

2 products from 1 vendor

Vendors

Сообщество свободного программного обеспечения

Products

Debian GNU/Linux, Linux

Versions

10 (Debian GNU/Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), от 5.11.14 до 5.11.16 включительно (Linux), от 4.19.187 до 4.19.188 включительно (Linux), от 5.4.112 до 5.4.114 включительно (Linux), от 5.10.30 до 5.10.32 включительно (Linux), от 5.12 до 5.12.0 включительно (Linux)

Product types

Operating system

Platforms

Сообщество свободного программного обеспечения Debian GNU/Linux 10, Сообщество свободного программного обеспечения Debian GNU/Linux 11, Сообщество свободного программного обеспечения Debian GNU/Linux 12, Сообщество свободного программного обеспечения Linux от 4.4.0 до 4.4.267 включительно, Сообщество свободного программного обеспечения Linux от 4.9.0 до 4.9.267 включительно, Сообщество свободного программного обеспечения Linux от 4.14.0 до 4.14.231 включительно, Сообщество свободного программного обеспечения Linux от 4.19.0 до 4.19.188 включительно, Сообщество свободного программного обеспечения Linux от 5.4.0 до 5.4.114 включительно, Сообщество свободного программного обеспечения Linux от 5.10.0 до 5.10.32 включительно, Сообщество свободного программного обеспечения Linux от 5.11.14 до 5.11.16 включительно, Сообщество свободного программного обеспечения Linux 5.12.0

Mitigations

Использование рекомендаций: Для Linux: https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.232 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.189 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.268 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.268 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.33 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.17 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.1 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.115 https://git.kernel.org/linus/2ad5692db72874f02b9ad551d26345437ea4f7f3 https://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00 https://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1 https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3 https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef https://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554 https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725 https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273 https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e https://lore.kernel.org/linux-cve-announce/2024022557-CVE-2021-46905-6507@gregkh/ https://lore.kernel.org/linux-cve-announce/2024022557-CVE-2021-46905-6507@gregkh/T/#u Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2021-46905

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": "10 (Debian GNU/Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), \u043e\u0442 5.11.14 \u0434\u043e 5.11.16 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.19.187 \u0434\u043e 4.19.188 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.4.112 \u0434\u043e 5.4.114 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.10.30 \u0434\u043e 5.10.32 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.12 \u0434\u043e 5.12.0 \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": "\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\u0414\u043b\u044f Linux:\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.232\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.189\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.268\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.268\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.33\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.17\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.1\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.115\nhttps://git.kernel.org/linus/2ad5692db72874f02b9ad551d26345437ea4f7f3\nhttps://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e\nhttps://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00\nhttps://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1\nhttps://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3\nhttps://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef\nhttps://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554\nhttps://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725\nhttps://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273\nhttps://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e\nhttps://lore.kernel.org/linux-cve-announce/2024022557-CVE-2021-46905-6507@gregkh/\nhttps://lore.kernel.org/linux-cve-announce/2024022557-CVE-2021-46905-6507@gregkh/T/#u\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2021-46905",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "26.04.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "06.12.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "04.03.2024",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2024-01723",
  "\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-2021-46905",
  "\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 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 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 Debian GNU/Linux 12 , \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 4.4.0 \u0434\u043e 4.4.267 \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 4.9.0 \u0434\u043e 4.9.267 \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 4.14.0 \u0434\u043e 4.14.231 \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 4.19.0 \u0434\u043e 4.19.188 \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 5.4.0 \u0434\u043e 5.4.114 \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 5.10.0 \u0434\u043e 5.10.32 \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 5.11.14 \u0434\u043e 5.11.16 \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 5.12.0 ",
  "\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 hso_serial_tty_unregister \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 USB HSO (High Speed Options) \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": "\u0420\u0430\u0437\u044b\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f NULL (CWE-476)",
  "\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 hso_serial_tty_unregister \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 USB HSO (High Speed Options) \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 \u043e\u0448\u0438\u0431\u043a\u043e\u0439 \u0440\u0430\u0437\u044b\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u044f \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f. \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, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \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\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46905\nhttps://git.kernel.org/linus/2ad5692db72874f02b9ad551d26345437ea4f7f3\nhttps://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e\nhttps://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00\nhttps://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1\nhttps://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3\nhttps://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef\nhttps://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554\nhttps://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725\nhttps://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273\nhttps://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.232\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.189\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.268\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.268\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.33\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.17\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.1\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.115\nhttps://lore.kernel.org/linux-cve-announce/2024022557-CVE-2021-46905-6507@gregkh/\nhttps://lore.kernel.org/linux-cve-announce/2024022557-CVE-2021-46905-6507@gregkh/T/#u\nhttps://security-tracker.debian.org/tracker/CVE-2021-46905\nhttps://vuldb.com/?id.254720\nhttps://www.cve.org/CVERecord?id=CVE-2021-46905",
  "\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-476",
  "\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 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,5)\n\u041d\u0435\u0442 \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \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 4.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 0)"
}

CVE-2021-46905 (GCVE-0-2021-46905)

Vulnerability from cvelistv5 – Published: 2024-02-25 14:03 – Updated: 2026-05-23 15:18

Title

net: hso: fix NULL-deref on disconnect regression

Summary

In the Linux kernel, the following vulnerability has been resolved: net: hso: fix NULL-deref on disconnect regression Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead. Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-03-04 21:23 UTC

Assigner

Linux mitre root

References

9 references

URL	Tags
https://git.kernel.org/stable/c/5871761c5f0f20d6e…
https://git.kernel.org/stable/c/0c71d4c89559f72ce…
https://git.kernel.org/stable/c/24b699bea7553fc0b…
https://git.kernel.org/stable/c/5c17cfe155d21954b…
https://git.kernel.org/stable/c/d7fad2ce15bdbbd0f…
https://git.kernel.org/stable/c/90642ee9eb581a135…
https://git.kernel.org/stable/c/0f000005da31f6947…
https://git.kernel.org/stable/c/41c44e1f3112d7265…
https://git.kernel.org/stable/c/2ad5692db72874f02…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a462067d7c8e6953a733bf5ade8db947b1bb5449 , < 5871761c5f0f20d6e98bf3b6bd7486d857589554 (git) Affected: 145c89c441d27696961752bf51b323f347601bee , < 0c71d4c89559f72cec2592d078681a843bce570e (git) Affected: caf5ac93b3b5d5fac032fc11fbea680e115421b4 , < 24b699bea7553fc0b98dad9d864befb6005ac7f1 (git) Affected: 92028d7a31e55d53e41cff679156b9432cffcb36 , < 5c17cfe155d21954b4c7e2a78fa771cebcd86725 (git) Affected: 4a2933c88399c0ebc738db39bbce3ae89786d723 , < d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e (git) Affected: dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac , < 90642ee9eb581a13569b1c0bd57e85d962215273 (git) Affected: 388d05f70f1ee0cac4a2068fd295072f1a44152a , < 0f000005da31f6947f843ce6b3e3a960540c6e00 (git) Affected: 8a12f8836145ffe37e9c8733dce18c22fb668b66 , < 41c44e1f3112d7265dae522c026399b2a42d19ef (git) Affected: 8a12f8836145ffe37e9c8733dce18c22fb668b66 , < 2ad5692db72874f02b9ad551d26345437ea4f7f3 (git) Affected: 4.19.187 , < 4.19.189 (semver) Affected: 5.4.112 , < 5.4.115 (semver) Affected: 5.10.30 , < 5.10.33 (semver) Affected: 5.11.14 , < 5.11.17 (semver)
Linux	Linux	Affected: 5.12 Unaffected: 0 , < 5.12 (semver) Unaffected: 4.19.189 , ≤ 4.19.* (semver) Unaffected: 5.4.115 , ≤ 5.4.* (semver) Unaffected: 5.10.33 , ≤ 5.10.* (semver) Unaffected: 5.11.17 , ≤ 5.11.* (semver) Unaffected: 5.12.1 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-46905",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-04T21:23:48.854357Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-05T17:22:07.815Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:17:42.986Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/usb/hso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5871761c5f0f20d6e98bf3b6bd7486d857589554",
              "status": "affected",
              "version": "a462067d7c8e6953a733bf5ade8db947b1bb5449",
              "versionType": "git"
            },
            {
              "lessThan": "0c71d4c89559f72cec2592d078681a843bce570e",
              "status": "affected",
              "version": "145c89c441d27696961752bf51b323f347601bee",
              "versionType": "git"
            },
            {
              "lessThan": "24b699bea7553fc0b98dad9d864befb6005ac7f1",
              "status": "affected",
              "version": "caf5ac93b3b5d5fac032fc11fbea680e115421b4",
              "versionType": "git"
            },
            {
              "lessThan": "5c17cfe155d21954b4c7e2a78fa771cebcd86725",
              "status": "affected",
              "version": "92028d7a31e55d53e41cff679156b9432cffcb36",
              "versionType": "git"
            },
            {
              "lessThan": "d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e",
              "status": "affected",
              "version": "4a2933c88399c0ebc738db39bbce3ae89786d723",
              "versionType": "git"
            },
            {
              "lessThan": "90642ee9eb581a13569b1c0bd57e85d962215273",
              "status": "affected",
              "version": "dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac",
              "versionType": "git"
            },
            {
              "lessThan": "0f000005da31f6947f843ce6b3e3a960540c6e00",
              "status": "affected",
              "version": "388d05f70f1ee0cac4a2068fd295072f1a44152a",
              "versionType": "git"
            },
            {
              "lessThan": "41c44e1f3112d7265dae522c026399b2a42d19ef",
              "status": "affected",
              "version": "8a12f8836145ffe37e9c8733dce18c22fb668b66",
              "versionType": "git"
            },
            {
              "lessThan": "2ad5692db72874f02b9ad551d26345437ea4f7f3",
              "status": "affected",
              "version": "8a12f8836145ffe37e9c8733dce18c22fb668b66",
              "versionType": "git"
            },
            {
              "lessThan": "4.19.189",
              "status": "affected",
              "version": "4.19.187",
              "versionType": "semver"
            },
            {
              "lessThan": "5.4.115",
              "status": "affected",
              "version": "5.4.112",
              "versionType": "semver"
            },
            {
              "lessThan": "5.10.33",
              "status": "affected",
              "version": "5.10.30",
              "versionType": "semver"
            },
            {
              "lessThan": "5.11.17",
              "status": "affected",
              "version": "5.11.14",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/usb/hso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.115",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.11.*",
              "status": "unaffected",
              "version": "5.11.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.189",
                  "versionStartIncluding": "4.19.187",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.115",
                  "versionStartIncluding": "5.4.112",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.33",
                  "versionStartIncluding": "5.10.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.11.17",
                  "versionStartIncluding": "5.11.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.1",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hso: fix NULL-deref on disconnect regression\n\nCommit 8a12f8836145 (\"net: hso: fix null-ptr-deref during tty device\nunregistration\") fixed the racy minor allocation reported by syzbot, but\nintroduced an unconditional NULL-pointer dereference on every disconnect\ninstead.\n\nSpecifically, the serial device table must no longer be accessed after\nthe minor has been released by hso_serial_tty_unregister()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:18:41.989Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e"
        },
        {
          "url": "https://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e"
        },
        {
          "url": "https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00"
        },
        {
          "url": "https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef"
        },
        {
          "url": "https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3"
        }
      ],
      "title": "net: hso: fix NULL-deref on disconnect regression",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-46905",
    "datePublished": "2024-02-25T14:03:40.944Z",
    "dateReserved": "2024-02-25T13:45:52.717Z",
    "dateUpdated": "2026-05-23T15:18:41.989Z",
    "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:2024-01723 (CVE-2021-46905)

CVE-2021-46905 (GCVE-0-2021-46905)

Tags

Sightings

Nomenclature

Related by attack behaviour