Vulnerability-Lookup

BDU:2025-04462 (CVE-2021-47518)

Vulnerability from fstec – Published: 2025-04-14 – Updated: 2025-04-14 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции nfc_genl_dump_ses_done() модуля net/nfc/netlink.c подсистемы NFC ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции nfc_genl_dump_ses_done() модуля net/nfc/netlink.c подсистемы NFC ядра операционной системы Linux связана с разыменованием указателя NULL. Эксплуатация уязвимости может позволить нарушителю вызвать отказ в обслуживании

Severity

4.6 (Medium) CVSS 2.0


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

5.5 (Medium) CVSS 3.0


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-476 - Разыменование указателя NULL

Aliases

CVE-2021-47518

References

21 references

URL
https://git.kernel.org/stable/c/83ea620a1be840bf05089a5061fb8323ca42f38c
https://git.kernel.org/stable/c/69bb79a8f5bb9f436b6f1434ca9742591b7bbe18
https://git.kernel.org/stable/c/48fcd08fdbe05e35b650a252ec2a2d96057a1c7a
https://git.kernel.org/stable/c/fae9705d281091254d4a81fa2da9d22346097dca
https://git.kernel.org/stable/c/87cdb8789c38e44ae5454aafe277997c950d00ed
https://git.kernel.org/stable/c/3b861a40325eac9c4c13b6c53874ad90617e944d
https://git.kernel.org/stable/c/811a7576747760bcaf60502f096d1e6e91d566fa
https://www.cve.org/CVERecord?id=CVE-2021-47518
https://git.kernel.org/linus/4cd8371a234d051f9c9557fcbb1f8c523b1c0d10
https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commi…
https://lore.kernel.org/linux-cve-announce/2024052432-CVE-2021-47518-632d@gregkh/
https://ubuntu.com/security/notices/USN-6976-1
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.295
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.293
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.258
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.221
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.165
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.85
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.8
https://security-tracker.debian.org/tracker/CVE-2021-47518
https://ubuntu.com/security/CVE-2021-47518

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), 10 (Debian GNU/Linux), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), от 4.5 до 4.9.292 включительно (Linux), от 4.10 до 4.14.257 включительно (Linux), от 4.15 до 4.19.220 включительно (Linux), от 4.20 до 5.4.164 включительно (Linux), от 5.5 до 5.10.84 включительно (Linux), от 5.11 до 5.15.7 включительно (Linux), от 3.12 до 4.4.294 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, Сообщество свободного программного обеспечения Debian GNU/Linux 10, Canonical Ltd. Ubuntu 20.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 11, Сообщество свободного программного обеспечения Debian GNU/Linux 12, Сообщество свободного программного обеспечения Linux от 4.5 до 4.9.292 включительно, Сообщество свободного программного обеспечения Linux от 4.10 до 4.14.257 включительно, Сообщество свободного программного обеспечения Linux от 4.15 до 4.19.220 включительно, Сообщество свободного программного обеспечения Linux от 4.20 до 5.4.164 включительно, Сообщество свободного программного обеспечения Linux от 5.5 до 5.10.84 включительно, Сообщество свободного программного обеспечения Linux от 5.11 до 5.15.7 включительно, Сообщество свободного программного обеспечения Linux от 3.12 до 4.4.294 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://lore.kernel.org/linux-cve-announce/2024052432-CVE-2021-47518-632d@gregkh/ https://ubuntu.com/security/notices/USN-6976-1 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.295 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.293 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.258 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.221 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.165 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.85 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.8 https://git.kernel.org/linus/4cd8371a234d051f9c9557fcbb1f8c523b1c0d10 https://git.kernel.org/stable/c/83ea620a1be840bf05089a5061fb8323ca42f38c https://git.kernel.org/stable/c/69bb79a8f5bb9f436b6f1434ca9742591b7bbe18 https://git.kernel.org/stable/c/48fcd08fdbe05e35b650a252ec2a2d96057a1c7a https://git.kernel.org/stable/c/fae9705d281091254d4a81fa2da9d22346097dca https://git.kernel.org/stable/c/87cdb8789c38e44ae5454aafe277997c950d00ed https://git.kernel.org/stable/c/3b861a40325eac9c4c13b6c53874ad90617e944d https://git.kernel.org/stable/c/811a7576747760bcaf60502f096d1e6e91d566fa Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2021-47518 Для Ubuntu: https://ubuntu.com/security/CVE-2021-47518

JSON

To clipboard

{
  "CVSS 2.0": "AV:L/AC:L/Au:S/C:N/I:N/A:C",
  "CVSS 3.0": "AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "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), 10 (Debian GNU/Linux), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), \u043e\u0442 4.5 \u0434\u043e 4.9.292 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.10 \u0434\u043e 4.14.257 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.15 \u0434\u043e 4.19.220 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.20 \u0434\u043e 5.4.164 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.84 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11 \u0434\u043e 5.15.7 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 3.12 \u0434\u043e 4.4.294 \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://lore.kernel.org/linux-cve-announce/2024052432-CVE-2021-47518-632d@gregkh/\nhttps://ubuntu.com/security/notices/USN-6976-1\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.295\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.293\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.258\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.221\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.165\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.85\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.8\nhttps://git.kernel.org/linus/4cd8371a234d051f9c9557fcbb1f8c523b1c0d10\nhttps://git.kernel.org/stable/c/83ea620a1be840bf05089a5061fb8323ca42f38c\nhttps://git.kernel.org/stable/c/69bb79a8f5bb9f436b6f1434ca9742591b7bbe18\nhttps://git.kernel.org/stable/c/48fcd08fdbe05e35b650a252ec2a2d96057a1c7a\nhttps://git.kernel.org/stable/c/fae9705d281091254d4a81fa2da9d22346097dca\nhttps://git.kernel.org/stable/c/87cdb8789c38e44ae5454aafe277997c950d00ed\nhttps://git.kernel.org/stable/c/3b861a40325eac9c4c13b6c53874ad90617e944d\nhttps://git.kernel.org/stable/c/811a7576747760bcaf60502f096d1e6e91d566fa\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2021-47518\n\n\u0414\u043b\u044f Ubuntu:\nhttps://ubuntu.com/security/CVE-2021-47518",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "09.12.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "14.04.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "14.04.2025",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2025-04462",
  "\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-2021-47518",
  "\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 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 10 , 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 , \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 4.9.292 \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 4.10 \u0434\u043e 4.14.257 \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 4.15 \u0434\u043e 4.19.220 \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 5.4.164 \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 5.10.84 \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 5.15.7 \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 3.12 \u0434\u043e 4.4.294 \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 nfc_genl_dump_ses_done() \u043c\u043e\u0434\u0443\u043b\u044f net/nfc/netlink.c \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b NFC \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0420\u0430\u0437\u044b\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f NULL (CWE-476)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 nfc_genl_dump_ses_done() \u043c\u043e\u0434\u0443\u043b\u044f net/nfc/netlink.c \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b NFC \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 \u0440\u0430\u0437\u044b\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f NULL. \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,
  "\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://git.kernel.org/stable/c/83ea620a1be840bf05089a5061fb8323ca42f38c\nhttps://git.kernel.org/stable/c/69bb79a8f5bb9f436b6f1434ca9742591b7bbe18\nhttps://git.kernel.org/stable/c/48fcd08fdbe05e35b650a252ec2a2d96057a1c7a\nhttps://git.kernel.org/stable/c/fae9705d281091254d4a81fa2da9d22346097dca\nhttps://git.kernel.org/stable/c/87cdb8789c38e44ae5454aafe277997c950d00ed\nhttps://git.kernel.org/stable/c/3b861a40325eac9c4c13b6c53874ad90617e944d\nhttps://git.kernel.org/stable/c/811a7576747760bcaf60502f096d1e6e91d566fa\nhttps://www.cve.org/CVERecord?id=CVE-2021-47518\nhttps://git.kernel.org/linus/4cd8371a234d051f9c9557fcbb1f8c523b1c0d10\nhttps://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1\u0026id=83ea620a1be840bf05089a5061fb8323ca42f38c\nhttps://lore.kernel.org/linux-cve-announce/2024052432-CVE-2021-47518-632d@gregkh/\nhttps://ubuntu.com/security/notices/USN-6976-1\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.295\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.293\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.258\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.221\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.165\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.85\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.8\nhttps://security-tracker.debian.org/tracker/CVE-2021-47518\nhttps://ubuntu.com/security/CVE-2021-47518",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-476",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 4,6)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,5)"
}

CVE-2021-47518 (GCVE-0-2021-47518)

Vulnerability from cvelistv5 – Published: 2024-05-24 15:09 – Updated: 2026-05-11 13:56

Title

nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done

Summary

In the Linux kernel, the following vulnerability has been resolved: nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done The done() netlink callback nfc_genl_dump_ses_done() should check if received argument is non-NULL, because its allocation could fail earlier in dumpit() (nfc_genl_dump_ses()).

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-17 17:36 UTC

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/87cdb8789c38e44ae…
https://git.kernel.org/stable/c/69bb79a8f5bb9f436…
https://git.kernel.org/stable/c/811a7576747760bca…
https://git.kernel.org/stable/c/3b861a40325eac9c4…
https://git.kernel.org/stable/c/48fcd08fdbe05e35b…
https://git.kernel.org/stable/c/83ea620a1be840bf0…
https://git.kernel.org/stable/c/fae9705d281091254…
https://git.kernel.org/stable/c/4cd8371a234d051f9…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 , < 87cdb8789c38e44ae5454aafe277997c950d00ed (git) Affected: ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 , < 69bb79a8f5bb9f436b6f1434ca9742591b7bbe18 (git) Affected: ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 , < 811a7576747760bcaf60502f096d1e6e91d566fa (git) Affected: ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 , < 3b861a40325eac9c4c13b6c53874ad90617e944d (git) Affected: ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 , < 48fcd08fdbe05e35b650a252ec2a2d96057a1c7a (git) Affected: ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 , < 83ea620a1be840bf05089a5061fb8323ca42f38c (git) Affected: ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 , < fae9705d281091254d4a81fa2da9d22346097dca (git) Affected: ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95 , < 4cd8371a234d051f9c9557fcbb1f8c523b1c0d10 (git)
Linux	Linux	Affected: 3.12 Unaffected: 0 , < 3.12 (semver) Unaffected: 4.4.295 , ≤ 4.4.* (semver) Unaffected: 4.9.293 , ≤ 4.9.* (semver) Unaffected: 4.14.258 , ≤ 4.14.* (semver) Unaffected: 4.19.221 , ≤ 4.19.* (semver) Unaffected: 5.4.165 , ≤ 5.4.* (semver) Unaffected: 5.10.85 , ≤ 5.10.* (semver) Unaffected: 5.15.8 , ≤ 5.15.* (semver) Unaffected: 5.16 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47518",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-17T17:36:30.333493Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-17T17:36:34.295Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:39:59.765Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
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    "cveId": "CVE-2021-47518",
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    "dateReserved": "2024-05-24T15:02:54.824Z",
    "dateUpdated": "2026-05-11T13:56:12.796Z",
    "state": "PUBLISHED"
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}

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.

Detection rules are retrieved from Rulezet.

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.