Vulnerability-Lookup

BDU:2024-03690 (CVE-2021-46950)

Vulnerability from fstec – Published: 2024-05-15 – Updated: 2024-05-15 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции raid1_end_write_request() в модуле drivers/md/raid1.c драйвера raid1 ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Summary

Уязвимость функции raid1_end_write_request() в модуле drivers/md/raid1.c драйвера raid1 ядра операционной системы Linux связана с некорректным ведением битовой маски. Эксплуатация уязвимости может позволить нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Severity

6.8 (Medium) CVSS 2.0


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

7.8 (High) CVSS 3.0


                      
                        CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-19 - Обработка данных

Aliases

CVE-2021-46950

References

17 references

URL
https://git.kernel.org/stable/c/a6e17cab00fc5bf85472434c52ac751426257c6f
https://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382
https://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40
https://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd
https://git.kernel.org/stable/c/538244fba59fde17186322776247cd9c05be86dd
https://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515
https://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46950
https://lore.kernel.org/linux-cve-announce/20240227184057.2368370-15-gregkh@lin…
https://git.kernel.org/linus/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd
https://www.cve.org/CVERecord?id=CVE-2021-46950
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.233
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.191
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.118
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.36
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.20
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.3

Impacted products

1 product from 1 vendor

Vendors

Сообщество свободного программного обеспечения

Products

Linux

Versions

от 4.19.0 до 4.19.190 включительно (Linux), от 5.5 до 5.10.35 включительно (Linux), от 5.11.0 до 5.11.19 включительно (Linux), от 5.12.0 до 5.12.2 включительно (Linux), от 4.14.147 до 4.14.232 включительно (Linux), от 5.2.19 до 5.3 (Linux), от 5.3.4 до 5.4.117 включительно (Linux)

Product types

Operating system

Platforms

Сообщество свободного программного обеспечения Linux от 4.19.0 до 4.19.190 включительно, Сообщество свободного программного обеспечения Linux от 5.5 до 5.10.35 включительно, Сообщество свободного программного обеспечения Linux от 5.11.0 до 5.11.19 включительно, Сообщество свободного программного обеспечения Linux от 5.12.0 до 5.12.2 включительно, Сообщество свободного программного обеспечения Linux от 4.14.147 до 4.14.232 включительно, Сообщество свободного программного обеспечения Linux от 5.2.19 до 5.3, Сообщество свободного программного обеспечения Linux от 5.3.4 до 5.4.117 включительно

Mitigations

Использование рекомендаций: Для Linux: https://git.kernel.org/stable/c/a6e17cab00fc5bf85472434c52ac751426257c6f https://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382 https://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40 https://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd https://git.kernel.org/stable/c/538244fba59fde17186322776247cd9c05be86dd https://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515 https://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.233 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.191 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.118 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.36 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.20 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.3

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:L/Au:S/C:C/I:C/A:C",
  "CVSS 3.0": "AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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": "\u043e\u0442 4.19.0 \u0434\u043e 4.19.190 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.35 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11.0 \u0434\u043e 5.11.19 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.12.0 \u0434\u043e 5.12.2 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.14.147 \u0434\u043e 4.14.232 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.2.19 \u0434\u043e 5.3 (Linux), \u043e\u0442 5.3.4 \u0434\u043e 5.4.117 \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://git.kernel.org/stable/c/a6e17cab00fc5bf85472434c52ac751426257c6f\nhttps://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382\nhttps://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40\nhttps://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd\nhttps://git.kernel.org/stable/c/538244fba59fde17186322776247cd9c05be86dd\nhttps://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515\nhttps://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.233\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.191\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.118\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.36\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.20\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.3",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "23.04.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "15.05.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "15.05.2024",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2024-03690",
  "\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-2021-46950",
  "\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": "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 Linux \u043e\u0442 4.19.0 \u0434\u043e 4.19.190 \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 5.5 \u0434\u043e 5.10.35 \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 5.11.0 \u0434\u043e 5.11.19 \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 5.12.0 \u0434\u043e 5.12.2 \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 4.14.147 \u0434\u043e 4.14.232 \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 5.2.19 \u0434\u043e 5.3 , \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 5.3.4 \u0434\u043e 5.4.117 \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 raid1_end_write_request() \u0432 \u043c\u043e\u0434\u0443\u043b\u0435 drivers/md/raid1.c \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 raid1 \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": "\u041e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0434\u0430\u043d\u043d\u044b\u0445 (CWE-19)",
  "\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 raid1_end_write_request() \u0432 \u043c\u043e\u0434\u0443\u043b\u0435 drivers/md/raid1.c \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 raid1 \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\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u044b\u043c \u0432\u0435\u0434\u0435\u043d\u0438\u0435\u043c \u0431\u0438\u0442\u043e\u0432\u043e\u0439 \u043c\u0430\u0441\u043a\u0438. \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 \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 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://git.kernel.org/stable/c/a6e17cab00fc5bf85472434c52ac751426257c6f\nhttps://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382\nhttps://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40\nhttps://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd\nhttps://git.kernel.org/stable/c/538244fba59fde17186322776247cd9c05be86dd\nhttps://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515\nhttps://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5\nhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46950\nhttps://lore.kernel.org/linux-cve-announce/20240227184057.2368370-15-gregkh@linuxfoundation.org/T/#u\nhttps://git.kernel.org/linus/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd\nhttps://www.cve.org/CVERecord?id=CVE-2021-46950\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.233\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.191\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.118\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.36\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.20\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.3",
  "\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-19",
  "\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 6,8)\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 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)"
}

CVE-2021-46950 (GCVE-0-2021-46950)

Vulnerability from cvelistv5 – Published: 2024-02-27 18:40 – Updated: 2026-05-23 15:18

Title

md/raid1: properly indicate failure when ending a failed write request

Summary

In the Linux kernel, the following vulnerability has been resolved: md/raid1: properly indicate failure when ending a failed write request This patch addresses a data corruption bug in raid1 arrays using bitmaps. Without this fix, the bitmap bits for the failed I/O end up being cleared. Since we are in the failure leg of raid1_end_write_request, the request either needs to be retried (R1BIO_WriteError) or failed (R1BIO_Degraded).

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-22 16:05 UTC

CWE

CWE-noinfo Not enough information

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/12216d0919b64ee2e…
https://git.kernel.org/stable/c/a6e17cab00fc5bf85…
https://git.kernel.org/stable/c/6920cef604fa57f94…
https://git.kernel.org/stable/c/661061a45e32d8b2c…
https://git.kernel.org/stable/c/59452e551784b7a57…
https://git.kernel.org/stable/c/538244fba59fde171…
https://git.kernel.org/stable/c/2417b9869b81882ab…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 900c531899f5ee2321bef79e20055787bc73251d , < 12216d0919b64ee2ea5dc7a50e455670f44383d5 (git) Affected: 1cd972e0a10760a1fa27d9830d78446c891c23b6 , < a6e17cab00fc5bf85472434c52ac751426257c6f (git) Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 6920cef604fa57f9409e3960413e9cc11f5c5a40 (git) Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 661061a45e32d8b2cc0e306da9f169ad44011382 (git) Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 59452e551784b7a57a45d971727e9db63b192515 (git) Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 538244fba59fde17186322776247cd9c05be86dd (git) Affected: eeba6809d8d58908b5ed1b5ceb5fcb09a98a7cad , < 2417b9869b81882ab90fd5ed1081a1cb2d4db1dd (git) Affected: a1f4fcb880988a96c0b2d5c3305ffc4e49eca0ed (git) Affected: 344242d50f468a250bf4b6136934392758412ed8 (git) Affected: 4.14.147 , < 4.14.233 (semver) Affected: 4.19.77 , < 4.19.191 (semver) Affected: 5.2.19 , < 5.3 (semver) Affected: 5.3.4 , < 5.4 (semver)
Linux	Linux	Affected: 5.4 Unaffected: 0 , < 5.4 (semver) Unaffected: 4.14.233 , ≤ 4.14.* (semver) Unaffected: 4.19.191 , ≤ 4.19.* (semver) Unaffected: 5.4.118 , ≤ 5.4.* (semver) Unaffected: 5.10.36 , ≤ 5.10.* (semver) Unaffected: 5.11.20 , ≤ 5.11.* (semver) Unaffected: 5.12.3 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix)

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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.2.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.3.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: properly indicate failure when ending a failed write request\n\nThis patch addresses a data corruption bug in raid1 arrays using bitmaps.\nWithout this fix, the bitmap bits for the failed I/O end up being cleared.\n\nSince we are in the failure leg of raid1_end_write_request, the request\neither needs to be retried (R1BIO_WriteError) or failed (R1BIO_Degraded)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:18:44.268Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5"
        },
        {
          "url": "https://git.kernel.org/stable/c/a6e17cab00fc5bf85472434c52ac751426257c6f"
        },
        {
          "url": "https://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40"
        },
        {
          "url": "https://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382"
        },
        {
          "url": "https://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515"
        },
        {
          "url": "https://git.kernel.org/stable/c/538244fba59fde17186322776247cd9c05be86dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd"
        }
      ],
      "title": "md/raid1: properly indicate failure when ending a failed write request",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-46950",
    "datePublished": "2024-02-27T18:40:34.106Z",
    "dateReserved": "2024-02-25T13:45:52.722Z",
    "dateUpdated": "2026-05-23T15:18:44.268Z",
    "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:2024-03690 (CVE-2021-46950)

CVE-2021-46950 (GCVE-0-2021-46950)

Tags

Sightings

Nomenclature

Related by attack behaviour