Vulnerability-Lookup

BDU:2026-02657 (CVE-2022-49956)

Vulnerability from fstec – Published: 2026-03-06 – Updated: 2026-03-06 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции cmd_hdl_filter() в модуле drivers/staging/rtl8712/rtl8712_cmd.c поддержки дополнительных устройств ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Summary

Уязвимость функции cmd_hdl_filter() в модуле drivers/staging/rtl8712/rtl8712_cmd.c поддержки дополнительных устройств ядра операционной системы Linux связана с повторным использованием ранее освобожденной памяти. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Severity

7.7 (High) CVSS 2.0


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

8.0 (High) CVSS 3.1


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-416 - Использование после освобождения

Aliases

CVE-2022-49956

References

18 references

URL
https://www.cve.org/CVERecord?id=CVE-2022-49956
https://git.kernel.org/stable/c/7dce6b0ee7d78667d6c831ced957a08769973063
https://git.kernel.org/stable/c/376e15487fec837301d888068a3fcc82efb6171a
https://git.kernel.org/stable/c/9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27
https://git.kernel.org/stable/c/d0aac7146e96bf39e79c65087d21dfa02ef8db38
https://git.kernel.org/stable/c/19e3f69d19801940abc2ac37c169882769ed9770
https://git.kernel.org/stable/c/dc02aaf950015850e7589696521c7fca767cea77
https://git.kernel.org/stable/c/b1727def850904e4b8ba384043775672841663a1
https://git.kernel.org/stable/c/e230a4455ac3e9b112f0367d1b8e255e141afae0
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.328
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.293
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.258
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.213
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.142
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.66
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.8
https://security-tracker.debian.org/tracker/CVE-2022-49956
https://ubuntu.com/security/CVE-2022-49956

Impacted products

3 products from 2 vendors

Vendors

Canonical Ltd., Сообщество свободного программного обеспечения

Products

Ubuntu, Debian GNU/Linux, Linux

Versions

14.04 LTS (Ubuntu), 16.04 LTS (Ubuntu), 18.04 LTS (Ubuntu), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 22.04 LTS (Ubuntu), от 4.15 до 4.19.257 включительно (Linux), от 4.20 до 5.4.212 включительно (Linux), от 5.5 до 5.10.141 включительно (Linux), от 5.11 до 5.15.65 включительно (Linux), от 5.16 до 5.19.7 включительно (Linux), от 4.10 до 4.14.292 включительно (Linux), от 2.6.37 до 4.9.327 включительно (Linux)

Product types

Operating system

Platforms

Canonical Ltd. Ubuntu 14.04 LTS, Canonical Ltd. Ubuntu 16.04 LTS, Canonical Ltd. Ubuntu 18.04 LTS, Canonical Ltd. Ubuntu 20.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 11, Canonical Ltd. Ubuntu 22.04 LTS, Сообщество свободного программного обеспечения Linux от 4.15 до 4.19.257 включительно, Сообщество свободного программного обеспечения Linux от 4.20 до 5.4.212 включительно, Сообщество свободного программного обеспечения Linux от 5.5 до 5.10.141 включительно, Сообщество свободного программного обеспечения Linux от 5.11 до 5.15.65 включительно, Сообщество свободного программного обеспечения Linux от 5.16 до 5.19.7 включительно, Сообщество свободного программного обеспечения Linux от 4.10 до 4.14.292 включительно, Сообщество свободного программного обеспечения Linux от 2.6.37 до 4.9.327 включительно

Mitigations

В условиях отсутствия обновлений безопасности от производителя рекомендуется придерживаться "Рекомендаций по безопасной настройке операционных систем LINUX", изложенных в методическом документе ФСТЭК России, утверждённом 25 декабря 2022 года. Использование рекомендаций: Для Linux: https://git.kernel.org/stable/c/7dce6b0ee7d78667d6c831ced957a08769973063 https://git.kernel.org/stable/c/376e15487fec837301d888068a3fcc82efb6171a https://git.kernel.org/stable/c/9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27 https://git.kernel.org/stable/c/d0aac7146e96bf39e79c65087d21dfa02ef8db38 https://git.kernel.org/stable/c/19e3f69d19801940abc2ac37c169882769ed9770 https://git.kernel.org/stable/c/dc02aaf950015850e7589696521c7fca767cea77 https://git.kernel.org/stable/c/b1727def850904e4b8ba384043775672841663a1 https://git.kernel.org/stable/c/e230a4455ac3e9b112f0367d1b8e255e141afae0 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.328 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.293 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.258 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.213 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.142 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.66 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.8 Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2022-49956 Для Ubuntu: https://ubuntu.com/security/CVE-2022-49956

JSON

To clipboard

{
  "CVSS 2.0": "AV:A/AC:L/Au:S/C:C/I:C/A:C",
  "CVSS 3.0": "AV:A/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": "Canonical Ltd., \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "14.04 LTS (Ubuntu), 16.04 LTS (Ubuntu), 18.04 LTS (Ubuntu), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 22.04 LTS (Ubuntu), \u043e\u0442 4.15 \u0434\u043e 4.19.257 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.20 \u0434\u043e 5.4.212 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.141 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11 \u0434\u043e 5.15.65 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.16 \u0434\u043e 5.19.7 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.10 \u0434\u043e 4.14.292 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 2.6.37 \u0434\u043e 4.9.327 \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\n\u0414\u043b\u044f Linux:\nhttps://git.kernel.org/stable/c/7dce6b0ee7d78667d6c831ced957a08769973063\nhttps://git.kernel.org/stable/c/376e15487fec837301d888068a3fcc82efb6171a\nhttps://git.kernel.org/stable/c/9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27\nhttps://git.kernel.org/stable/c/d0aac7146e96bf39e79c65087d21dfa02ef8db38\nhttps://git.kernel.org/stable/c/19e3f69d19801940abc2ac37c169882769ed9770\nhttps://git.kernel.org/stable/c/dc02aaf950015850e7589696521c7fca767cea77\nhttps://git.kernel.org/stable/c/b1727def850904e4b8ba384043775672841663a1\nhttps://git.kernel.org/stable/c/e230a4455ac3e9b112f0367d1b8e255e141afae0\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.328\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.293\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.258\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.213\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.142\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.66\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.8\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2022-49956\n\n\u0414\u043b\u044f Ubuntu:\nhttps://ubuntu.com/security/CVE-2022-49956",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "30.08.2022",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "06.03.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "06.03.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-02657",
  "\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-2022-49956",
  "\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": "Ubuntu, 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": "Canonical Ltd. Ubuntu 14.04 LTS , Canonical Ltd. Ubuntu 16.04 LTS , Canonical Ltd. Ubuntu 18.04 LTS , Canonical Ltd. Ubuntu 20.04 LTS , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 11 , Canonical Ltd. Ubuntu 22.04 LTS , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 4.15 \u0434\u043e 4.19.257 \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 5.4.212 \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 5.10.141 \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 5.15.65 \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 5.19.7 \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 4.10 \u0434\u043e 4.14.292 \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 2.6.37 \u0434\u043e 4.9.327 \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 cmd_hdl_filter() \u0432 \u043c\u043e\u0434\u0443\u043b\u0435 drivers/staging/rtl8712/rtl8712_cmd.c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \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": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u0441\u043b\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u044f (CWE-416)",
  "\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 cmd_hdl_filter() \u0432 \u043c\u043e\u0434\u0443\u043b\u0435 drivers/staging/rtl8712/rtl8712_cmd.c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \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 \u043f\u043e\u0432\u0442\u043e\u0440\u043d\u044b\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0440\u0430\u043d\u0435\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\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, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e, \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://www.cve.org/CVERecord?id=CVE-2022-49956\nhttps://git.kernel.org/stable/c/7dce6b0ee7d78667d6c831ced957a08769973063\nhttps://git.kernel.org/stable/c/376e15487fec837301d888068a3fcc82efb6171a\nhttps://git.kernel.org/stable/c/9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27\nhttps://git.kernel.org/stable/c/d0aac7146e96bf39e79c65087d21dfa02ef8db38\nhttps://git.kernel.org/stable/c/19e3f69d19801940abc2ac37c169882769ed9770\nhttps://git.kernel.org/stable/c/dc02aaf950015850e7589696521c7fca767cea77\nhttps://git.kernel.org/stable/c/b1727def850904e4b8ba384043775672841663a1\nhttps://git.kernel.org/stable/c/e230a4455ac3e9b112f0367d1b8e255e141afae0\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.328\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.293\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.258\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.213\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.142\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.66\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.8\nhttps://security-tracker.debian.org/tracker/CVE-2022-49956\nhttps://ubuntu.com/security/CVE-2022-49956",
  "\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-416",
  "\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": "\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 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,7)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 8)"
}

CVE-2022-49956 (GCVE-0-2022-49956)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2026-08-05 08:56

Title

staging: rtl8712: fix use after free bugs

Summary

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8712: fix use after free bugs _Read/Write_MACREG callbacks are NULL so the read/write_macreg_hdl() functions don't do anything except free the "pcmd" pointer. It results in a use after free. Delete them.

Severity

7 (High)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/7dce6b0ee7d78667d…
https://git.kernel.org/stable/c/376e15487fec83730…
https://git.kernel.org/stable/c/9fd6170c5e2d0ccd0…
https://git.kernel.org/stable/c/d0aac7146e96bf39e…
https://git.kernel.org/stable/c/19e3f69d19801940a…
https://git.kernel.org/stable/c/dc02aaf950015850e…
https://git.kernel.org/stable/c/b1727def850904e4b…
https://git.kernel.org/stable/c/e230a4455ac3e9b11…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef , < 7dce6b0ee7d78667d6c831ced957a08769973063 (git) Affected: 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef , < 376e15487fec837301d888068a3fcc82efb6171a (git) Affected: 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef , < 9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27 (git) Affected: 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef , < d0aac7146e96bf39e79c65087d21dfa02ef8db38 (git) Affected: 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef , < 19e3f69d19801940abc2ac37c169882769ed9770 (git) Affected: 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef , < dc02aaf950015850e7589696521c7fca767cea77 (git) Affected: 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef , < b1727def850904e4b8ba384043775672841663a1 (git) Affected: 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef , < e230a4455ac3e9b112f0367d1b8e255e141afae0 (git)
Linux	Linux	Affected: 2.6.37 Unaffected: 0 , < 2.6.37 (semver) Unaffected: 4.9.328 , ≤ 4.9.* (semver) Unaffected: 4.14.293 , ≤ 4.14.* (semver) Unaffected: 4.19.258 , ≤ 4.19.* (semver) Unaffected: 5.4.213 , ≤ 5.4.* (semver) Unaffected: 5.10.142 , ≤ 5.10.* (semver) Unaffected: 5.15.66 , ≤ 5.15.* (semver) Unaffected: 5.19.8 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/staging/rtl8712/rtl8712_cmd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7dce6b0ee7d78667d6c831ced957a08769973063",
              "status": "affected",
              "version": "2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef",
              "versionType": "git"
            },
            {
              "lessThan": "376e15487fec837301d888068a3fcc82efb6171a",
              "status": "affected",
              "version": "2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef",
              "versionType": "git"
            },
            {
              "lessThan": "9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27",
              "status": "affected",
              "version": "2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef",
              "versionType": "git"
            },
            {
              "lessThan": "d0aac7146e96bf39e79c65087d21dfa02ef8db38",
              "status": "affected",
              "version": "2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef",
              "versionType": "git"
            },
            {
              "lessThan": "19e3f69d19801940abc2ac37c169882769ed9770",
              "status": "affected",
              "version": "2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef",
              "versionType": "git"
            },
            {
              "lessThan": "dc02aaf950015850e7589696521c7fca767cea77",
              "status": "affected",
              "version": "2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef",
              "versionType": "git"
            },
            {
              "lessThan": "b1727def850904e4b8ba384043775672841663a1",
              "status": "affected",
              "version": "2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef",
              "versionType": "git"
            },
            {
              "lessThan": "e230a4455ac3e9b112f0367d1b8e255e141afae0",
              "status": "affected",
              "version": "2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/staging/rtl8712/rtl8712_cmd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.37"
            },
            {
              "lessThan": "2.6.37",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.328",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.293",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.213",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.328",
                  "versionStartIncluding": "2.6.37",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.293",
                  "versionStartIncluding": "2.6.37",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.258",
                  "versionStartIncluding": "2.6.37",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.213",
                  "versionStartIncluding": "2.6.37",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.142",
                  "versionStartIncluding": "2.6.37",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.66",
                  "versionStartIncluding": "2.6.37",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.8",
                  "versionStartIncluding": "2.6.37",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "2.6.37",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8712: fix use after free bugs\n\n_Read/Write_MACREG callbacks are NULL so the read/write_macreg_hdl()\nfunctions don\u0027t do anything except free the \"pcmd\" pointer.  It\nresults in a use after free.  Delete them."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The UAF is in the rtl8712 host-to-firmware cmd filter (`cmd_hdl_filter` \u2192 `r8712_cmd_thread`), a local driver software path for queued `cmd_obj`s, not WiFi-frame RX (Adjacent) or USB probe/URB handling (Physical); adapter presence is an environmental precondition.\nAC:H - Triggering requires a `_Read_MACREG`/`_Write_MACREG` `cmd_obj` on the cmd queue, but no in-tree caller has ever enqueued those codes since the driver was added\u2014success depends on a condition the attacker cannot influence.\nPR:L - If those H2C commands were issued, they would come from wireless management paths gated by `CAP_NET_ADMIN`; per kernel CNA guidance that capability is reachable via user namespaces, so Privileges Required is Low rather than High.\nUI:N - Command dequeue and filter execution run entirely in the driver\u0027s cmd thread with no separate victim action such as mounting a filesystem or confirming a prompt.\nS:U - The resulting heap UAF/double-free stays inside the host kernel\u0027s security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - After `r8712_free_cmd_obj()` the freed `cmd_obj` is reused for `cmdcode`/`parmbuf`/`cmdsz` reads; per kernel UAF guidance that enables disclosure of reclaimed heap contents.\nI:H - The same path later double-frees `pcmd`, a classic heap UAF/double-free primitive that can be groomed into arbitrary write or control-flow hijack, so Integrity is High.\nA:H - Use-after-free and double-free of `cmd_obj` cause kernel oops/KASAN/BUG failures in the cmd thread, which is Availability High under kernel CVSS guidance."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:56:53.613Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7dce6b0ee7d78667d6c831ced957a08769973063"
        },
        {
          "url": "https://git.kernel.org/stable/c/376e15487fec837301d888068a3fcc82efb6171a"
        },
        {
          "url": "https://git.kernel.org/stable/c/9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0aac7146e96bf39e79c65087d21dfa02ef8db38"
        },
        {
          "url": "https://git.kernel.org/stable/c/19e3f69d19801940abc2ac37c169882769ed9770"
        },
        {
          "url": "https://git.kernel.org/stable/c/dc02aaf950015850e7589696521c7fca767cea77"
        },
        {
          "url": "https://git.kernel.org/stable/c/b1727def850904e4b8ba384043775672841663a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/e230a4455ac3e9b112f0367d1b8e255e141afae0"
        }
      ],
      "title": "staging: rtl8712: fix use after free bugs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49956",
    "datePublished": "2025-06-18T11:00:18.341Z",
    "dateReserved": "2025-06-18T10:57:27.382Z",
    "dateUpdated": "2026-08-05T08:56:53.613Z",
    "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:2026-02657 (CVE-2022-49956)

CVE-2022-49956 (GCVE-0-2022-49956)

Tags

Sightings

Nomenclature

Related by attack behaviour