Vulnerability-Lookup

BDU:2025-07315

Vulnerability from fstec - Published: 18.06.2021

Title

Уязвимость функции ec_bhf_remove() драйвера drivers/net/ethernet/ec_bhf.c поддержки сетевых адаптеров Ethernet ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Description

Уязвимость функции ec_bhf_remove() драйвера drivers/net/ethernet/ec_bhf.c поддержки сетевых адаптеров Ethernet ядра операционной системы Linux связана с повторным использованием ранее освобожденной памяти. Эксплуатация уязвимости может позволить нарушителю вызвать отказ в обслуживании

Severity ?


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

Vendor

Сообщество свободного программного обеспечения

Software Name

Linux

Software Version

от 4.5 до 4.9.273 включительно (Linux), от 4.10 до 4.14.237 включительно (Linux), от 4.15 до 4.19.195 включительно (Linux), от 5.11 до 5.12.12 включительно (Linux), от 4.20 до 5.4.127 включительно (Linux), от 5.5 до 5.10.45 включительно (Linux), от 3.15 до 4.4.273 включительно (Linux)

Possible 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/95deeb29d831e2fae608439e243e7a520611e7ea https://git.kernel.org/stable/c/19f88ca68ccf8771276a606765239b167654f84a https://git.kernel.org/stable/c/d11d79e52ba080ee567cb7d7eb42a5ade60a8130 https://git.kernel.org/stable/c/db2bc3cfd2bc01621014d4f17cdfc74611f339c8 https://git.kernel.org/stable/c/9cca0c2d70149160407bda9a9446ce0c29b6e6c6 https://git.kernel.org/stable/c/b1ad283755095a4b9d1431aeb357d7df1a33d3bb https://git.kernel.org/stable/c/1cafc540b7bf1b6a5a77dc000205fe337ef6eba6 https://git.kernel.org/stable/c/0260916843cc74f3906acf8b6f256693e01530a2 https://lore.kernel.org/linux-cve-announce/2024052140-CVE-2021-47235-1fb6@gregkh/ https://git.kernel.org/linus/9cca0c2d70149160407bda9a9446ce0c29b6e6c6 https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1&id=95deeb29d831e2fae608439e243e7a520611e7ea https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.274 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.274 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.238 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.196 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.128 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13

Reference

https://git.kernel.org/stable/c/95deeb29d831e2fae608439e243e7a520611e7ea https://git.kernel.org/stable/c/19f88ca68ccf8771276a606765239b167654f84a https://git.kernel.org/stable/c/d11d79e52ba080ee567cb7d7eb42a5ade60a8130 https://git.kernel.org/stable/c/db2bc3cfd2bc01621014d4f17cdfc74611f339c8 https://git.kernel.org/stable/c/9cca0c2d70149160407bda9a9446ce0c29b6e6c6 https://git.kernel.org/stable/c/b1ad283755095a4b9d1431aeb357d7df1a33d3bb https://git.kernel.org/stable/c/1cafc540b7bf1b6a5a77dc000205fe337ef6eba6 https://git.kernel.org/stable/c/0260916843cc74f3906acf8b6f256693e01530a2 https://www.cve.org/CVERecord?id=CVE-2021-47235 https://lore.kernel.org/linux-cve-announce/2024052140-CVE-2021-47235-1fb6@gregkh/ https://git.kernel.org/linus/9cca0c2d70149160407bda9a9446ce0c29b6e6c6 https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1&id=95deeb29d831e2fae608439e243e7a520611e7ea https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.274 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.274 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.238 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.196 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.128 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13

CWE

CWE-416

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 4.5 \u0434\u043e 4.9.273 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.10 \u0434\u043e 4.14.237 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.15 \u0434\u043e 4.19.195 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11 \u0434\u043e 5.12.12 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.20 \u0434\u043e 5.4.127 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.45 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 3.15 \u0434\u043e 4.4.273 \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\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/95deeb29d831e2fae608439e243e7a520611e7ea\nhttps://git.kernel.org/stable/c/19f88ca68ccf8771276a606765239b167654f84a\nhttps://git.kernel.org/stable/c/d11d79e52ba080ee567cb7d7eb42a5ade60a8130\nhttps://git.kernel.org/stable/c/db2bc3cfd2bc01621014d4f17cdfc74611f339c8\nhttps://git.kernel.org/stable/c/9cca0c2d70149160407bda9a9446ce0c29b6e6c6\nhttps://git.kernel.org/stable/c/b1ad283755095a4b9d1431aeb357d7df1a33d3bb\nhttps://git.kernel.org/stable/c/1cafc540b7bf1b6a5a77dc000205fe337ef6eba6\nhttps://git.kernel.org/stable/c/0260916843cc74f3906acf8b6f256693e01530a2\nhttps://lore.kernel.org/linux-cve-announce/2024052140-CVE-2021-47235-1fb6@gregkh/\nhttps://git.kernel.org/linus/9cca0c2d70149160407bda9a9446ce0c29b6e6c6\nhttps://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1\u0026id=95deeb29d831e2fae608439e243e7a520611e7ea\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.274\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.274\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.238\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.196\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.128\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "18.06.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "23.06.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "23.06.2025",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2025-07315",
  "\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-2021-47235",
  "\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 4.5 \u0434\u043e 4.9.273 \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 4.14.237 \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 4.15 \u0434\u043e 4.19.195 \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 5.12.12 \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 5.4.127 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.5 \u0434\u043e 5.10.45 \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 3.15 \u0434\u043e 4.4.273 \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 ec_bhf_remove() \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 drivers/net/ethernet/ec_bhf.c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0430\u0434\u0430\u043f\u0442\u0435\u0440\u043e\u0432 Ethernet \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": "\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 ec_bhf_remove() \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 drivers/net/ethernet/ec_bhf.c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0430\u0434\u0430\u043f\u0442\u0435\u0440\u043e\u0432 Ethernet \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 \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,
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  "\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://git.kernel.org/stable/c/95deeb29d831e2fae608439e243e7a520611e7ea\nhttps://git.kernel.org/stable/c/19f88ca68ccf8771276a606765239b167654f84a\nhttps://git.kernel.org/stable/c/d11d79e52ba080ee567cb7d7eb42a5ade60a8130\nhttps://git.kernel.org/stable/c/db2bc3cfd2bc01621014d4f17cdfc74611f339c8\nhttps://git.kernel.org/stable/c/9cca0c2d70149160407bda9a9446ce0c29b6e6c6\nhttps://git.kernel.org/stable/c/b1ad283755095a4b9d1431aeb357d7df1a33d3bb\nhttps://git.kernel.org/stable/c/1cafc540b7bf1b6a5a77dc000205fe337ef6eba6\nhttps://git.kernel.org/stable/c/0260916843cc74f3906acf8b6f256693e01530a2\nhttps://www.cve.org/CVERecord?id=CVE-2021-47235\nhttps://lore.kernel.org/linux-cve-announce/2024052140-CVE-2021-47235-1fb6@gregkh/\nhttps://git.kernel.org/linus/9cca0c2d70149160407bda9a9446ce0c29b6e6c6\nhttps://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1\u0026id=95deeb29d831e2fae608439e243e7a520611e7ea\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.274\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.274\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.238\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.196\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.128\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13",
  "\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": "\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 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)"
}

CVE-2021-47235 (GCVE-0-2021-47235)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:19 – Updated: 2025-05-04 07:06

Title

net: ethernet: fix potential use-after-free in ec_bhf_remove

Summary

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: fix potential use-after-free in ec_bhf_remove static void ec_bhf_remove(struct pci_dev *dev) { ... struct ec_bhf_priv *priv = netdev_priv(net_dev); unregister_netdev(net_dev); free_netdev(net_dev); pci_iounmap(dev, priv->dma_io); pci_iounmap(dev, priv->io); ... } priv is netdev private data, but it is used after free_netdev(). It can cause use-after-free when accessing priv pointer. So, fix it by moving free_netdev() after pci_iounmap() calls.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/db2bc3cfd2bc01621…
	https://git.kernel.org/stable/c/1cafc540b7bf1b6a5…
	https://git.kernel.org/stable/c/b1ad283755095a4b9…
	https://git.kernel.org/stable/c/0260916843cc74f39…
	https://git.kernel.org/stable/c/19f88ca68ccf87712…
	https://git.kernel.org/stable/c/95deeb29d831e2fae…
	https://git.kernel.org/stable/c/d11d79e52ba080ee5…
	https://git.kernel.org/stable/c/9cca0c2d701491604…

Impacted products

Vendor

Product

Version

Linux

Affected: 6af55ff52b02d492d45db88df3e461fa51a6f753 , < db2bc3cfd2bc01621014d4f17cdfc74611f339c8 (git)
Affected: 6af55ff52b02d492d45db88df3e461fa51a6f753 , < 1cafc540b7bf1b6a5a77dc000205fe337ef6eba6 (git)
Affected: 6af55ff52b02d492d45db88df3e461fa51a6f753 , < b1ad283755095a4b9d1431aeb357d7df1a33d3bb (git)
Affected: 6af55ff52b02d492d45db88df3e461fa51a6f753 , < 0260916843cc74f3906acf8b6f256693e01530a2 (git)
Affected: 6af55ff52b02d492d45db88df3e461fa51a6f753 , < 19f88ca68ccf8771276a606765239b167654f84a (git)
Affected: 6af55ff52b02d492d45db88df3e461fa51a6f753 , < 95deeb29d831e2fae608439e243e7a520611e7ea (git)
Affected: 6af55ff52b02d492d45db88df3e461fa51a6f753 , < d11d79e52ba080ee567cb7d7eb42a5ade60a8130 (git)
Affected: 6af55ff52b02d492d45db88df3e461fa51a6f753 , < 9cca0c2d70149160407bda9a9446ce0c29b6e6c6 (git)

Linux

Affected: 3.15
Unaffected: 0 , < 3.15 (semver)
Unaffected: 4.4.274 , ≤ 4.4.* (semver)
Unaffected: 4.9.274 , ≤ 4.9.* (semver)
Unaffected: 4.14.238 , ≤ 4.14.* (semver)
Unaffected: 4.19.196 , ≤ 4.19.* (semver)
Unaffected: 5.4.128 , ≤ 5.4.* (semver)
Unaffected: 5.10.46 , ≤ 5.10.* (semver)
Unaffected: 5.12.13 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: fix potential use-after-free in ec_bhf_remove\n\nstatic void ec_bhf_remove(struct pci_dev *dev)\n{\n...\n\tstruct ec_bhf_priv *priv = netdev_priv(net_dev);\n\n\tunregister_netdev(net_dev);\n\tfree_netdev(net_dev);\n\n\tpci_iounmap(dev, priv-\u003edma_io);\n\tpci_iounmap(dev, priv-\u003eio);\n...\n}\n\npriv is netdev private data, but it is used\nafter free_netdev(). It can cause use-after-free when accessing priv\npointer. So, fix it by moving free_netdev() after pci_iounmap()\ncalls."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:06:51.851Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/db2bc3cfd2bc01621014d4f17cdfc74611f339c8"
        },
        {
          "url": "https://git.kernel.org/stable/c/1cafc540b7bf1b6a5a77dc000205fe337ef6eba6"
        },
        {
          "url": "https://git.kernel.org/stable/c/b1ad283755095a4b9d1431aeb357d7df1a33d3bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/0260916843cc74f3906acf8b6f256693e01530a2"
        },
        {
          "url": "https://git.kernel.org/stable/c/19f88ca68ccf8771276a606765239b167654f84a"
        },
        {
          "url": "https://git.kernel.org/stable/c/95deeb29d831e2fae608439e243e7a520611e7ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/d11d79e52ba080ee567cb7d7eb42a5ade60a8130"
        },
        {
          "url": "https://git.kernel.org/stable/c/9cca0c2d70149160407bda9a9446ce0c29b6e6c6"
        }
      ],
      "title": "net: ethernet: fix potential use-after-free in ec_bhf_remove",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47235",
    "datePublished": "2024-05-21T14:19:37.070Z",
    "dateReserved": "2024-04-10T18:59:19.531Z",
    "dateUpdated": "2025-05-04T07:06:51.851Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

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

Detection rules are retrieved from Rulezet.

Action not permitted

BDU:2025-07315

CVE-2021-47235 (GCVE-0-2021-47235)

Tags

Sightings

Nomenclature