Vulnerability-Lookup

BDU:2026-04406 (CVE-2023-53556)

Vulnerability from fstec – Published: 2026-04-01 – Updated: 2026-04-01 – View on bdu.fstec.ru Fixed

Title

Summary

Уязвимость функции iavf_alloc_q_vectors() модуля drivers/net/ethernet/intel/iavf/iavf_main.c драйвера сетевых адаптеров Ethernet Intel 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-2023-53556

References

14 references

URL
https://www.cve.org/CVERecord?id=CVE-2023-53556
https://git.kernel.org/stable/c/17046107ca15d7571551539d94e76aba2bf71fd3
https://git.kernel.org/stable/c/a4635f190f332304db4a49e827ece790b804b5db
https://git.kernel.org/stable/c/345c44e18cc10cded85cb9134830e1684495c866
https://git.kernel.org/stable/c/ca12b98e04b5d1902ac08fe826d3500cb4b6e891
https://git.kernel.org/stable/c/8d781a9c53034813c3194b7d94409c7d24ac73eb
https://git.kernel.org/linus/5f4fa1672d98fe99d2297b03add35346f1685d6b
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.251
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.188
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.123
https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.42
https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.7
https://ubuntu.com/security/CVE-2023-53556
https://security-tracker.debian.org/tracker/CVE-2023-53556

Impacted products

3 products from 2 vendors

Vendors

Canonical Ltd., Сообщество свободного программного обеспечения

Products

Ubuntu, Debian GNU/Linux, Linux

Versions

16.04 LTS (Ubuntu), 18.04 LTS (Ubuntu), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 22.04 LTS (Ubuntu), от 5.5 до 5.10.187 включительно (Linux), от 5.11 до 5.15.122 включительно (Linux), от 5.16 до 6.1.41 включительно (Linux), от 6.2 до 6.4.6 включительно (Linux), от 3.14 до 5.4.250 включительно (Linux)

Product types

Operating system

Platforms

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, Сообщество свободного программного обеспечения Debian GNU/Linux 12, Canonical Ltd. Ubuntu 22.04 LTS, Сообщество свободного программного обеспечения Linux от 5.5 до 5.10.187 включительно, Сообщество свободного программного обеспечения Linux от 5.11 до 5.15.122 включительно, Сообщество свободного программного обеспечения Linux от 5.16 до 6.1.41 включительно, Сообщество свободного программного обеспечения Linux от 6.2 до 6.4.6 включительно, Сообщество свободного программного обеспечения Linux от 3.14 до 5.4.250 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/17046107ca15d7571551539d94e76aba2bf71fd3 https://git.kernel.org/stable/c/a4635f190f332304db4a49e827ece790b804b5db https://git.kernel.org/stable/c/345c44e18cc10cded85cb9134830e1684495c866 https://git.kernel.org/stable/c/ca12b98e04b5d1902ac08fe826d3500cb4b6e891 https://git.kernel.org/stable/c/8d781a9c53034813c3194b7d94409c7d24ac73eb https://git.kernel.org/linus/5f4fa1672d98fe99d2297b03add35346f1685d6b https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.251 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.188 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.123 https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.42 https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.7 Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2023-53556 Для Ubuntu: https://ubuntu.com/security/CVE-2023-53556

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": "16.04 LTS (Ubuntu), 18.04 LTS (Ubuntu), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 22.04 LTS (Ubuntu), \u043e\u0442 5.5 \u0434\u043e 5.10.187 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11 \u0434\u043e 5.15.122 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.16 \u0434\u043e 6.1.41 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 6.2 \u0434\u043e 6.4.6 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 3.14 \u0434\u043e 5.4.250 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0412 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0438\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \"\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u043e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c LINUX\", \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0432 \u043c\u0435\u0442\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0435 \u0424\u0421\u0422\u042d\u041a \u0420\u043e\u0441\u0441\u0438\u0438, \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0451\u043d\u043d\u043e\u043c 25 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2022 \u0433\u043e\u0434\u0430.\n\n\n\n\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\n\u0414\u043b\u044f Linux:\nhttps://git.kernel.org/stable/c/17046107ca15d7571551539d94e76aba2bf71fd3\nhttps://git.kernel.org/stable/c/a4635f190f332304db4a49e827ece790b804b5db\nhttps://git.kernel.org/stable/c/345c44e18cc10cded85cb9134830e1684495c866\nhttps://git.kernel.org/stable/c/ca12b98e04b5d1902ac08fe826d3500cb4b6e891\nhttps://git.kernel.org/stable/c/8d781a9c53034813c3194b7d94409c7d24ac73eb\nhttps://git.kernel.org/linus/5f4fa1672d98fe99d2297b03add35346f1685d6b\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.251\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.188\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.123\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.42\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.7\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2023-53556\n\n\u0414\u043b\u044f Ubuntu:\nhttps://ubuntu.com/security/CVE-2023-53556",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "17.07.2023",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "01.04.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "01.04.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-04406",
  "\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-2023-53556",
  "\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 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 , \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 , 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 5.5 \u0434\u043e 5.10.187 \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 5.15.122 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.16 \u0434\u043e 6.1.41 \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 6.2 \u0434\u043e 6.4.6 \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 3.14 \u0434\u043e 5.4.250 \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 iavf_alloc_q_vectors() \u043c\u043e\u0434\u0443\u043b\u044f drivers/net/ethernet/intel/iavf/iavf_main.c \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0430\u0434\u0430\u043f\u0442\u0435\u0440\u043e\u0432 Ethernet Intel \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 iavf_alloc_q_vectors() \u043c\u043e\u0434\u0443\u043b\u044f drivers/net/ethernet/intel/iavf/iavf_main.c \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0430\u0434\u0430\u043f\u0442\u0435\u0440\u043e\u0432 Ethernet Intel \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-2023-53556\nhttps://git.kernel.org/stable/c/17046107ca15d7571551539d94e76aba2bf71fd3\nhttps://git.kernel.org/stable/c/a4635f190f332304db4a49e827ece790b804b5db\nhttps://git.kernel.org/stable/c/345c44e18cc10cded85cb9134830e1684495c866\nhttps://git.kernel.org/stable/c/ca12b98e04b5d1902ac08fe826d3500cb4b6e891\nhttps://git.kernel.org/stable/c/8d781a9c53034813c3194b7d94409c7d24ac73eb\nhttps://git.kernel.org/linus/5f4fa1672d98fe99d2297b03add35346f1685d6b\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.251\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.188\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.123\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.42\nhttps://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.7\nhttps://ubuntu.com/security/CVE-2023-53556\nhttps://security-tracker.debian.org/tracker/CVE-2023-53556",
  "\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-2023-53556 (GCVE-0-2023-53556)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:17 – Updated: 2026-08-05 09:14

Title

iavf: Fix use-after-free in free_netdev

Summary

In the Linux kernel, the following vulnerability has been resolved: iavf: Fix use-after-free in free_netdev We do netif_napi_add() for all allocated q_vectors[], but potentially do netif_napi_del() for part of them, then kfree q_vectors and leave invalid pointers at dev->napi_list. Reproducer: [root@host ~]# cat repro.sh #!/bin/bash pf_dbsf="0000:41:00.0" vf0_dbsf="0000:41:02.0" g_pids=() function do_set_numvf() { echo 2 >/sys/bus/pci/devices/${pf_dbsf}/sriov_numvfs sleep $((RANDOM%3+1)) echo 0 >/sys/bus/pci/devices/${pf_dbsf}/sriov_numvfs sleep $((RANDOM%3+1)) } function do_set_channel() { local nic=$(ls -1 --indicator-style=none /sys/bus/pci/devices/${vf0_dbsf}/net/) [ -z "$nic" ] && { sleep $((RANDOM%3)) ; return 1; } ifconfig $nic 192.168.18.5 netmask 255.255.255.0 ifconfig $nic up ethtool -L $nic combined 1 ethtool -L $nic combined 4 sleep $((RANDOM%3)) } function on_exit() { local pid for pid in "${g_pids[@]}"; do kill -0 "$pid" &>/dev/null && kill "$pid" &>/dev/null done g_pids=() } trap "on_exit; exit" EXIT while :; do do_set_numvf ; done & g_pids+=($!) while :; do do_set_channel ; done & g_pids+=($!) wait Result: [ 4093.900222] ================================================================== [ 4093.900230] BUG: KASAN: use-after-free in free_netdev+0x308/0x390 [ 4093.900232] Read of size 8 at addr ffff88b4dc145640 by task repro.sh/6699 [ 4093.900233] [ 4093.900236] CPU: 10 PID: 6699 Comm: repro.sh Kdump: loaded Tainted: G O --------- -t - 4.18.0 #1 [ 4093.900238] Hardware name: Powerleader PR2008AL/H12DSi-N6, BIOS 2.0 04/09/2021 [ 4093.900239] Call Trace: [ 4093.900244] dump_stack+0x71/0xab [ 4093.900249] print_address_description+0x6b/0x290 [ 4093.900251] ? free_netdev+0x308/0x390 [ 4093.900252] kasan_report+0x14a/0x2b0 [ 4093.900254] free_netdev+0x308/0x390 [ 4093.900261] iavf_remove+0x825/0xd20 [iavf] [ 4093.900265] pci_device_remove+0xa8/0x1f0 [ 4093.900268] device_release_driver_internal+0x1c6/0x460 [ 4093.900271] pci_stop_bus_device+0x101/0x150 [ 4093.900273] pci_stop_and_remove_bus_device+0xe/0x20 [ 4093.900275] pci_iov_remove_virtfn+0x187/0x420 [ 4093.900277] ? pci_iov_add_virtfn+0xe10/0xe10 [ 4093.900278] ? pci_get_subsys+0x90/0x90 [ 4093.900280] sriov_disable+0xed/0x3e0 [ 4093.900282] ? bus_find_device+0x12d/0x1a0 [ 4093.900290] i40e_free_vfs+0x754/0x1210 [i40e] [ 4093.900298] ? i40e_reset_all_vfs+0x880/0x880 [i40e] [ 4093.900299] ? pci_get_device+0x7c/0x90 [ 4093.900300] ? pci_get_subsys+0x90/0x90 [ 4093.900306] ? pci_vfs_assigned.part.7+0x144/0x210 [ 4093.900309] ? __mutex_lock_slowpath+0x10/0x10 [ 4093.900315] i40e_pci_sriov_configure+0x1fa/0x2e0 [i40e] [ 4093.900318] sriov_numvfs_store+0x214/0x290 [ 4093.900320] ? sriov_totalvfs_show+0x30/0x30 [ 4093.900321] ? __mutex_lock_slowpath+0x10/0x10 [ 4093.900323] ? __check_object_size+0x15a/0x350 [ 4093.900326] kernfs_fop_write+0x280/0x3f0 [ 4093.900329] vfs_write+0x145/0x440 [ 4093.900330] ksys_write+0xab/0x160 [ 4093.900332] ? __ia32_sys_read+0xb0/0xb0 [ 4093.900334] ? fput_many+0x1a/0x120 [ 4093.900335] ? filp_close+0xf0/0x130 [ 4093.900338] do_syscall_64+0xa0/0x370 [ 4093.900339] ? page_fault+0x8/0x30 [ 4093.900341] entry_SYSCALL_64_after_hwframe+0x65/0xca [ 4093.900357] RIP: 0033:0x7f16ad4d22c0 [ 4093.900359] Code: 73 01 c3 48 8b 0d d8 cb 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 24 2d 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 fe dd 01 00 48 89 04 24 [ 4093.900360] RSP: 002b:00007ffd6491b7f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 4093.900362] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f16ad4d22c0 [ 4093.900363] RDX: 0000000000000002 RSI: 0000000001a41408 RDI: 0000000000000001 [ 4093.900364] RBP: 0000000001a41408 R08: 00007f16ad7a1780 R09: 00007f16ae1f2700 [ 4093.9003 ---truncated---

Severity

7.8 (High)


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

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/17046107ca15d7571…
https://git.kernel.org/stable/c/a4635f190f332304d…
https://git.kernel.org/stable/c/345c44e18cc10cded…
https://git.kernel.org/stable/c/ca12b98e04b5d1902…
https://git.kernel.org/stable/c/8d781a9c53034813c…
https://git.kernel.org/stable/c/5f4fa1672d98fe99d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5eae00c57f5e42bf201023471917da213c4946d6 , < 17046107ca15d7571551539d94e76aba2bf71fd3 (git) Affected: 5eae00c57f5e42bf201023471917da213c4946d6 , < a4635f190f332304db4a49e827ece790b804b5db (git) Affected: 5eae00c57f5e42bf201023471917da213c4946d6 , < 345c44e18cc10cded85cb9134830e1684495c866 (git) Affected: 5eae00c57f5e42bf201023471917da213c4946d6 , < ca12b98e04b5d1902ac08fe826d3500cb4b6e891 (git) Affected: 5eae00c57f5e42bf201023471917da213c4946d6 , < 8d781a9c53034813c3194b7d94409c7d24ac73eb (git) Affected: 5eae00c57f5e42bf201023471917da213c4946d6 , < 5f4fa1672d98fe99d2297b03add35346f1685d6b (git)
Linux	Linux	Affected: 3.14 Unaffected: 0 , < 3.14 (semver) Unaffected: 5.4.251 , ≤ 5.4.* (semver) Unaffected: 5.10.188 , ≤ 5.10.* (semver) Unaffected: 5.15.123 , ≤ 5.15.* (semver) Unaffected: 6.1.42 , ≤ 6.1.* (semver) Unaffected: 6.4.7 , ≤ 6.4.* (semver) Unaffected: 6.5 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/iavf/iavf_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "17046107ca15d7571551539d94e76aba2bf71fd3",
              "status": "affected",
              "version": "5eae00c57f5e42bf201023471917da213c4946d6",
              "versionType": "git"
            },
            {
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            {
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/iavf/iavf_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.14"
            },
            {
              "lessThan": "3.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.251",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.123",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.251",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.188",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.123",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.42",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.7",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niavf: Fix use-after-free in free_netdev\n\nWe do netif_napi_add() for all allocated q_vectors[], but potentially\ndo netif_napi_del() for part of them, then kfree q_vectors and leave\ninvalid pointers at dev-\u003enapi_list.\n\nReproducer:\n\n  [root@host ~]# cat repro.sh\n  #!/bin/bash\n\n  pf_dbsf=\"0000:41:00.0\"\n  vf0_dbsf=\"0000:41:02.0\"\n  g_pids=()\n\n  function do_set_numvf()\n  {\n      echo 2 \u003e/sys/bus/pci/devices/${pf_dbsf}/sriov_numvfs\n      sleep $((RANDOM%3+1))\n      echo 0 \u003e/sys/bus/pci/devices/${pf_dbsf}/sriov_numvfs\n      sleep $((RANDOM%3+1))\n  }\n\n  function do_set_channel()\n  {\n      local nic=$(ls -1 --indicator-style=none /sys/bus/pci/devices/${vf0_dbsf}/net/)\n      [ -z \"$nic\" ] \u0026\u0026 { sleep $((RANDOM%3)) ; return 1; }\n      ifconfig $nic 192.168.18.5 netmask 255.255.255.0\n      ifconfig $nic up\n      ethtool -L $nic combined 1\n      ethtool -L $nic combined 4\n      sleep $((RANDOM%3))\n  }\n\n  function on_exit()\n  {\n      local pid\n      for pid in \"${g_pids[@]}\"; do\n          kill -0 \"$pid\" \u0026\u003e/dev/null \u0026\u0026 kill \"$pid\" \u0026\u003e/dev/null\n      done\n      g_pids=()\n  }\n\n  trap \"on_exit; exit\" EXIT\n\n  while :; do do_set_numvf ; done \u0026\n  g_pids+=($!)\n  while :; do do_set_channel ; done \u0026\n  g_pids+=($!)\n\n  wait\n\nResult:\n\n[ 4093.900222] ==================================================================\n[ 4093.900230] BUG: KASAN: use-after-free in free_netdev+0x308/0x390\n[ 4093.900232] Read of size 8 at addr ffff88b4dc145640 by task repro.sh/6699\n[ 4093.900233]\n[ 4093.900236] CPU: 10 PID: 6699 Comm: repro.sh Kdump: loaded Tainted: G           O     --------- -t - 4.18.0 #1\n[ 4093.900238] Hardware name: Powerleader PR2008AL/H12DSi-N6, BIOS 2.0 04/09/2021\n[ 4093.900239] Call Trace:\n[ 4093.900244]  dump_stack+0x71/0xab\n[ 4093.900249]  print_address_description+0x6b/0x290\n[ 4093.900251]  ? free_netdev+0x308/0x390\n[ 4093.900252]  kasan_report+0x14a/0x2b0\n[ 4093.900254]  free_netdev+0x308/0x390\n[ 4093.900261]  iavf_remove+0x825/0xd20 [iavf]\n[ 4093.900265]  pci_device_remove+0xa8/0x1f0\n[ 4093.900268]  device_release_driver_internal+0x1c6/0x460\n[ 4093.900271]  pci_stop_bus_device+0x101/0x150\n[ 4093.900273]  pci_stop_and_remove_bus_device+0xe/0x20\n[ 4093.900275]  pci_iov_remove_virtfn+0x187/0x420\n[ 4093.900277]  ? pci_iov_add_virtfn+0xe10/0xe10\n[ 4093.900278]  ? pci_get_subsys+0x90/0x90\n[ 4093.900280]  sriov_disable+0xed/0x3e0\n[ 4093.900282]  ? bus_find_device+0x12d/0x1a0\n[ 4093.900290]  i40e_free_vfs+0x754/0x1210 [i40e]\n[ 4093.900298]  ? i40e_reset_all_vfs+0x880/0x880 [i40e]\n[ 4093.900299]  ? pci_get_device+0x7c/0x90\n[ 4093.900300]  ? pci_get_subsys+0x90/0x90\n[ 4093.900306]  ? pci_vfs_assigned.part.7+0x144/0x210\n[ 4093.900309]  ? __mutex_lock_slowpath+0x10/0x10\n[ 4093.900315]  i40e_pci_sriov_configure+0x1fa/0x2e0 [i40e]\n[ 4093.900318]  sriov_numvfs_store+0x214/0x290\n[ 4093.900320]  ? sriov_totalvfs_show+0x30/0x30\n[ 4093.900321]  ? __mutex_lock_slowpath+0x10/0x10\n[ 4093.900323]  ? __check_object_size+0x15a/0x350\n[ 4093.900326]  kernfs_fop_write+0x280/0x3f0\n[ 4093.900329]  vfs_write+0x145/0x440\n[ 4093.900330]  ksys_write+0xab/0x160\n[ 4093.900332]  ? __ia32_sys_read+0xb0/0xb0\n[ 4093.900334]  ? fput_many+0x1a/0x120\n[ 4093.900335]  ? filp_close+0xf0/0x130\n[ 4093.900338]  do_syscall_64+0xa0/0x370\n[ 4093.900339]  ? page_fault+0x8/0x30\n[ 4093.900341]  entry_SYSCALL_64_after_hwframe+0x65/0xca\n[ 4093.900357] RIP: 0033:0x7f16ad4d22c0\n[ 4093.900359] Code: 73 01 c3 48 8b 0d d8 cb 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 24 2d 00 00 75 10 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 fe dd 01 00 48 89 04 24\n[ 4093.900360] RSP: 002b:00007ffd6491b7f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\n[ 4093.900362] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f16ad4d22c0\n[ 4093.900363] RDX: 0000000000000002 RSI: 0000000001a41408 RDI: 0000000000000001\n[ 4093.900364] RBP: 0000000001a41408 R08: 00007f16ad7a1780 R09: 00007f16ae1f2700\n[ 4093.9003\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable state is created through local device-management interfaces \u2014 the `ethtool -L` (ETHTOOL_SCHANNELS) ioctl on the VF netdev and sysfs/PCI-unbind driver teardown \u2014 and no virtchnl message or received network packet reaches `iavf_free_q_vectors()`. Exploitation therefore requires local access to the system hosting the iavf VF.\nAC:L - The attacker controls both sides of the race described in the commit\u0027s own reproducer, issuing the queue-count reconfiguration and driving the VF reset/teardown loop themselves, and can repeat both indefinitely until `iavf_set_channels()` takes its reset-timeout path that lowers `num_active_queues`. Heap grooming of the freed 8192-byte object before `free_netdev()` is likewise under attacker influence.\nPR:L - Reaching `iavf_set_channels()` only needs `ns_capable(net-\u003euser_ns, CAP_NET_ADMIN)`, which a container or tenant holds over its own network namespace when an SR-IOV VF is delegated into it \u2014 a routine Kubernetes SR-IOV CNI / NFV deployment. No real root in the initial namespace is required to create the NAPI add/del mismatch.\nUI:N - No victim action is needed; the attacker triggers the queue reconfiguration, the resets, and the driver-teardown path themselves in a loop, exactly as in the commit\u0027s reproducer script. Stale `napi_struct` entries also persist on a live `netdev-\u003enapi_list` after a reinit, so no separate administrator action is required.\nS:U - The use-after-free corrupts kernel heap memory and is exploited entirely within the kernel\u0027s own security authority, giving kernel-level control on the same host. No hypervisor, IOMMU, or other security-authority boundary is crossed.\nC:H - The dangling `napi_struct` pointers reference a freed `kmalloc-8k` object that the attacker can reoccupy with sprayed data, and `__netif_napi_del()` reads `napi-\u003estate`, `napi-\u003edev_list`, `napi-\u003eskb`, `napi-\u003egro_hash[]`, and `napi-\u003ethread` from it. Combined with the resulting arbitrary-pointer dereferences, this is leverageable into arbitrary kernel memory disclosure.\nI:H - `__netif_napi_del()` performs `list_del_rcu(\u0026napi-\u003edev_list)` and `hlist_del_init_rcu()` on the freed object, writing to attacker-forged `next`/`prev` pointers \u2014 a direct arbitrary-write primitive \u2014 plus `kfree_skb()` on controlled `napi-\u003eskb`/GRO-hash pointers and `kthread_stop(napi-\u003ethread)`. These are sufficient for control-flow hijacking and full privilege escalation.\nA:H - Even without exploitation the use-after-free corrupts `netdev-\u003enapi_list` and reliably oopses in `free_netdev()`, as shown by the KASAN splat in the commit message. Any list-walk consumer (`free_netdev()`, `netif_set_threaded()`, `__netpoll_setup()`) can panic the kernel."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:14:47.905Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/17046107ca15d7571551539d94e76aba2bf71fd3"
        },
        {
          "url": "https://git.kernel.org/stable/c/a4635f190f332304db4a49e827ece790b804b5db"
        },
        {
          "url": "https://git.kernel.org/stable/c/345c44e18cc10cded85cb9134830e1684495c866"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca12b98e04b5d1902ac08fe826d3500cb4b6e891"
        },
        {
          "url": "https://git.kernel.org/stable/c/8d781a9c53034813c3194b7d94409c7d24ac73eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/5f4fa1672d98fe99d2297b03add35346f1685d6b"
        }
      ],
      "title": "iavf: Fix use-after-free in free_netdev",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53556",
    "datePublished": "2025-10-04T15:17:01.238Z",
    "dateReserved": "2025-10-04T15:14:15.922Z",
    "dateUpdated": "2026-08-05T09:14:47.905Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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