Vulnerability-Lookup

BDU:2024-01700 (CVE-2021-46904)

Vulnerability from fstec – Published: 2024-03-04 – Updated: 2026-02-17 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции get_free_serial_index драйвера USB HSO (High Speed Options) ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции get_free_serial_index драйвера USB HSO (High Speed Options) ядра операционной системы Linux связана с использованием памяти после ее освобождения. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, 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-416 - Использование после освобождения
CWE-476 - Разыменование указателя NULL

Aliases

CVE-2021-46904

References

23 references

URL
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46904
https://git.kernel.org/linus/8a12f8836145ffe37e9c8733dce18c22fb668b66
https://git.kernel.org/stable/c/145c89c441d27696961752bf51b323f347601bee
https://git.kernel.org/stable/c/388d05f70f1ee0cac4a2068fd295072f1a44152a
https://git.kernel.org/stable/c/4a2933c88399c0ebc738db39bbce3ae89786d723
https://git.kernel.org/stable/c/8a12f8836145ffe37e9c8733dce18c22fb668b66
https://git.kernel.org/stable/c/92028d7a31e55d53e41cff679156b9432cffcb36
https://git.kernel.org/stable/c/a462067d7c8e6953a733bf5ade8db947b1bb5449
https://git.kernel.org/stable/c/caf5ac93b3b5d5fac032fc11fbea680e115421b4
https://git.kernel.org/stable/c/dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.232
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.187
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.268
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.268
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.30
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.112
https://lore.kernel.org/linux-cve-announce/2024022555-CVE-2021-46904-d49f@gregkh/T/#u
https://security-tracker.debian.org/tracker/CVE-2021-46904
https://ubuntu.com/security/notices/USN-6971-1
https://ubuntu.com/security/notices/USN-6976-1
https://vuldb.com/ru/?id.254721
https://www.cve.org/CVERecord?id=CVE-2021-46904

Impacted products

3 products from 2 vendors

Vendors

Сообщество свободного программного обеспечения, АО «СберТех»

Products

Debian GNU/Linux, Linux, Platform V SberLinux OS Server (запись в едином реестре российских программ №18785)

Versions

10 (Debian GNU/Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), от 4.15 до 4.19.186 включительно (Linux), от 4.20 до 5.4.111 включительно (Linux), от 5.5 до 5.10.29 включительно (Linux), от 5.11.0 до 5.11.13 включительно (Linux), от 4.0 до 4.4.267 включительно (Linux), от 4.5 до 4.9.267 включительно (Linux), от 4.10 до 4.14.231 включительно (Linux), 9.2.0-fstec (Platform V SberLinux OS Server)

Product types

Operating system

Platforms

Сообщество свободного программного обеспечения Debian GNU/Linux 10, Сообщество свободного программного обеспечения Debian GNU/Linux 11, Сообщество свободного программного обеспечения Debian GNU/Linux 12, Сообщество свободного программного обеспечения Linux от 4.15 до 4.19.186 включительно, Сообщество свободного программного обеспечения Linux от 4.20 до 5.4.111 включительно, Сообщество свободного программного обеспечения Linux от 5.5 до 5.10.29 включительно, Сообщество свободного программного обеспечения Linux от 5.11.0 до 5.11.13 включительно, Сообщество свободного программного обеспечения Linux от 4.0 до 4.4.267 включительно, Сообщество свободного программного обеспечения Linux от 4.5 до 4.9.267 включительно, Сообщество свободного программного обеспечения Linux от 4.10 до 4.14.231 включительно, АО «СберТех» Platform V SberLinux OS Server 9.2.0-fstec (запись в едином реестре российских программ №18785)

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/linus/8a12f8836145ffe37e9c8733dce18c22fb668b66 https://git.kernel.org/stable/c/145c89c441d27696961752bf51b323f347601bee https://git.kernel.org/stable/c/388d05f70f1ee0cac4a2068fd295072f1a44152a https://git.kernel.org/stable/c/4a2933c88399c0ebc738db39bbce3ae89786d723 https://git.kernel.org/stable/c/8a12f8836145ffe37e9c8733dce18c22fb668b66 https://git.kernel.org/stable/c/92028d7a31e55d53e41cff679156b9432cffcb36 https://git.kernel.org/stable/c/a462067d7c8e6953a733bf5ade8db947b1bb5449 https://git.kernel.org/stable/c/caf5ac93b3b5d5fac032fc11fbea680e115421b4 https://git.kernel.org/stable/c/dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.232 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.187 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.268 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.268 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.30 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.112 https://lore.kernel.org/linux-cve-announce/2024022555-CVE-2021-46904-d49f@gregkh/T/#u Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2021-46904

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": "\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, \u0410\u041e \u00ab\u0421\u0431\u0435\u0440\u0422\u0435\u0445\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "10 (Debian GNU/Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), \u043e\u0442 4.15 \u0434\u043e 4.19.186 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.20 \u0434\u043e 5.4.111 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.29 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.11.0 \u0434\u043e 5.11.13 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.0 \u0434\u043e 4.4.267 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.5 \u0434\u043e 4.9.267 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.10 \u0434\u043e 4.14.231 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), 9.2.0-fstec (Platform V SberLinux OS Server)",
  "\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/linus/8a12f8836145ffe37e9c8733dce18c22fb668b66\nhttps://git.kernel.org/stable/c/145c89c441d27696961752bf51b323f347601bee\nhttps://git.kernel.org/stable/c/388d05f70f1ee0cac4a2068fd295072f1a44152a\nhttps://git.kernel.org/stable/c/4a2933c88399c0ebc738db39bbce3ae89786d723\nhttps://git.kernel.org/stable/c/8a12f8836145ffe37e9c8733dce18c22fb668b66\nhttps://git.kernel.org/stable/c/92028d7a31e55d53e41cff679156b9432cffcb36\nhttps://git.kernel.org/stable/c/a462067d7c8e6953a733bf5ade8db947b1bb5449\nhttps://git.kernel.org/stable/c/caf5ac93b3b5d5fac032fc11fbea680e115421b4\nhttps://git.kernel.org/stable/c/dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.232\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.187\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.268\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.268\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.30\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.112\nhttps://lore.kernel.org/linux-cve-announce/2024022555-CVE-2021-46904-d49f@gregkh/T/#u\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2021-46904\n\n",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "07.04.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "17.02.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "04.03.2024",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2024-01700",
  "\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-2021-46904",
  "\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": "Debian GNU/Linux, Linux, Platform V SberLinux OS Server (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u211618785)",
  "\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 Debian GNU/Linux 10 , \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 4.15 \u0434\u043e 4.19.186 \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 5.4.111 \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 5.10.29 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 5.11.0 \u0434\u043e 5.11.13 \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 4.0 \u0434\u043e 4.4.267 \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 4.5 \u0434\u043e 4.9.267 \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 4.14.231 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0410\u041e \u00ab\u0421\u0431\u0435\u0440\u0422\u0435\u0445\u00bb Platform V SberLinux OS Server 9.2.0-fstec  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u211618785)",
  "\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 get_free_serial_index \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 USB HSO (High Speed Options) \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), \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 get_free_serial_index \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 USB HSO (High Speed Options) \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 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u043e\u0441\u043b\u0435 \u0435\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u044f. \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\u0435\u043d\u043d\u043e, \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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46904\nhttps://git.kernel.org/linus/8a12f8836145ffe37e9c8733dce18c22fb668b66\nhttps://git.kernel.org/stable/c/145c89c441d27696961752bf51b323f347601bee\nhttps://git.kernel.org/stable/c/388d05f70f1ee0cac4a2068fd295072f1a44152a\nhttps://git.kernel.org/stable/c/4a2933c88399c0ebc738db39bbce3ae89786d723\nhttps://git.kernel.org/stable/c/8a12f8836145ffe37e9c8733dce18c22fb668b66\nhttps://git.kernel.org/stable/c/92028d7a31e55d53e41cff679156b9432cffcb36\nhttps://git.kernel.org/stable/c/a462067d7c8e6953a733bf5ade8db947b1bb5449\nhttps://git.kernel.org/stable/c/caf5ac93b3b5d5fac032fc11fbea680e115421b4\nhttps://git.kernel.org/stable/c/dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.232\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.187\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.268\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.268\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.30\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.112\nhttps://lore.kernel.org/linux-cve-announce/2024022555-CVE-2021-46904-d49f@gregkh/T/#u\nhttps://security-tracker.debian.org/tracker/CVE-2021-46904\nhttps://ubuntu.com/security/notices/USN-6971-1\nhttps://ubuntu.com/security/notices/USN-6976-1\nhttps://vuldb.com/ru/?id.254721\nhttps://www.cve.org/CVERecord?id=CVE-2021-46904\n",
  "\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, 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)\n\u041d\u0435\u0442 \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \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 4.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 0)"
}

CVE-2021-46904 (GCVE-0-2021-46904)

Vulnerability from cvelistv5 – Published: 2024-02-25 14:03 – Updated: 2026-05-11 13:44

Title

net: hso: fix null-ptr-deref during tty device unregistration

Summary

In the Linux kernel, the following vulnerability has been resolved: net: hso: fix null-ptr-deref during tty device unregistration Multiple ttys try to claim the same the minor number causing a double unregistration of the same device. The first unregistration succeeds but the next one results in a null-ptr-deref. The get_free_serial_index() function returns an available minor number but doesn't assign it immediately. The assignment is done by the caller later. But before this assignment, calls to get_free_serial_index() would return the same minor number. Fix this by modifying get_free_serial_index to assign the minor number immediately after one is found to be and rename it to obtain_minor() to better reflect what it does. Similary, rename set_serial_by_index() to release_minor() and modify it to free up the minor number of the given hso_serial. Every obtain_minor() should have corresponding release_minor() call.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-25 17:47 UTC

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/a462067d7c8e6953a…
https://git.kernel.org/stable/c/145c89c441d276969…
https://git.kernel.org/stable/c/caf5ac93b3b5d5fac…
https://git.kernel.org/stable/c/92028d7a31e55d53e…
https://git.kernel.org/stable/c/4a2933c88399c0ebc…
https://git.kernel.org/stable/c/dc195928d7e4ec7b5…
https://git.kernel.org/stable/c/388d05f70f1ee0cac…
https://git.kernel.org/stable/c/8a12f8836145ffe37…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 72dc1c096c7051a48ab1dbb12f71976656b55eb5 , < a462067d7c8e6953a733bf5ade8db947b1bb5449 (git) Affected: 72dc1c096c7051a48ab1dbb12f71976656b55eb5 , < 145c89c441d27696961752bf51b323f347601bee (git) Affected: 72dc1c096c7051a48ab1dbb12f71976656b55eb5 , < caf5ac93b3b5d5fac032fc11fbea680e115421b4 (git) Affected: 72dc1c096c7051a48ab1dbb12f71976656b55eb5 , < 92028d7a31e55d53e41cff679156b9432cffcb36 (git) Affected: 72dc1c096c7051a48ab1dbb12f71976656b55eb5 , < 4a2933c88399c0ebc738db39bbce3ae89786d723 (git) Affected: 72dc1c096c7051a48ab1dbb12f71976656b55eb5 , < dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac (git) Affected: 72dc1c096c7051a48ab1dbb12f71976656b55eb5 , < 388d05f70f1ee0cac4a2068fd295072f1a44152a (git) Affected: 72dc1c096c7051a48ab1dbb12f71976656b55eb5 , < 8a12f8836145ffe37e9c8733dce18c22fb668b66 (git)
Linux	Linux	Affected: 2.6.27 Unaffected: 0 , < 2.6.27 (semver) Unaffected: 4.4.268 , ≤ 4.4.* (semver) Unaffected: 4.9.268 , ≤ 4.9.* (semver) Unaffected: 4.14.232 , ≤ 4.14.* (semver) Unaffected: 4.19.187 , ≤ 4.19.* (semver) Unaffected: 5.4.112 , ≤ 5.4.* (semver) Unaffected: 5.10.30 , ≤ 5.10.* (semver) Unaffected: 5.11.14 , ≤ 5.11.* (semver) Unaffected: 5.12 , ≤ * (original_commit_for_fix)

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                "timestamp": "2024-07-25T17:47:17.588165Z",
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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.

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.

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Action not permitted

BDU:2024-01700 (CVE-2021-46904)

CVE-2021-46904 (GCVE-0-2021-46904)

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