Vulnerability-Lookup

BDU:2026-16888 (CVE-2026-80881)

Vulnerability from fstec – Published: 2026-10-20 – Updated: 2026-10-20 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции ocfs2_read_blocks() компонента fs/ocfs2/buffer_head_io.c ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции ocfs2_read_blocks() компонента fs/ocfs2/buffer_head_io.c ядра операционной системы Linux связана с реализацией некорректного потока управления. 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 3.1


                      
                        CVSS:3.1/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-691 - Недостаточное управление потоком

Aliases

CVE-2026-80881, GHSA-5X8P-2X56-54GV

References

15 references

URL
https://git.kernel.org/stable/c/0e389fc290c350c67591abf4c367119f4689f310
https://git.kernel.org/stable/c/4ab17e328522a4df5fe0f0dcf39098118b1feeaa
https://git.kernel.org/stable/c/5927acb3e2c99985a14adecd9d1b67ba191c622d
https://git.kernel.org/stable/c/61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766
https://git.kernel.org/stable/c/6371a07148ee979af22a9d6f4c277462953a9a4a
https://git.kernel.org/stable/c/9e7a057934cdd58e4cc94350bcfe5367bbee0f8e
https://git.kernel.org/stable/c/a4eae1499c760949a93459d11390bd1fd823d31d
https://git.kernel.org/stable/c/ecb3f9386f4353034caef77239473c627232db17
https://github.com/advisories/GHSA-5x8p-2x56-54gv
http://repo.red-soft.ru/redos/8.0/x86_64/updates/
http://repo.red-soft.ru/redos/8.0/aarch64/updates/
http://repo.red-soft.ru/redos/7.3c/x86_64/updates/
https://security-tracker.debian.org/tracker/CVE-2026-80881
https://deb.freexian.com/extended-lts/tracker/CVE-2026-80881
https://ubuntu.com/security/CVE-2026-80881

Impacted products

4 products from 3 vendors

Vendors

Canonical Ltd., Сообщество свободного программного обеспечения, ООО «Ред Софт»

Products

Ubuntu, Debian GNU/Linux, РЕД ОС (запись в едином реестре российских программ №3751), Linux

Versions

16.04 LTS (Ubuntu), 9 (Debian GNU/Linux), 18.04 LTS (Ubuntu), 10 (Debian GNU/Linux), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 7.3 (РЕД ОС), 22.04 LTS (Ubuntu), 24.04 LTS (Ubuntu), 13 (Debian GNU/Linux), 8.0 (РЕД ОС), 26.04 LTS (Ubuntu), от 6.2 до 6.6.145 (Linux), от 6.7 до 6.12.97 (Linux), от 6.13 до 6.18.40 (Linux), от 6.19 до 7.1.5 (Linux), от 5.16 до 6.1.178 (Linux), от 5.11 до 5.15.212 (Linux), от 4.4.204 до 4.5 (Linux), от 4.9.204 до 4.10 (Linux), от 4.14.157 до 4.15 (Linux), от 4.19.87 до 5.10.261 (Linux)

Product types

Operating system

Platforms

Canonical Ltd. Ubuntu 16.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 9, 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, ООО «Ред Софт» РЕД ОС 7.3 (запись в едином реестре российских программ №3751), Canonical Ltd. Ubuntu 22.04 LTS, Canonical Ltd. Ubuntu 24.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 13, ООО «Ред Софт» РЕД ОС 8.0 (запись в едином реестре российских программ №3751), Canonical Ltd. Ubuntu 26.04 LTS, Сообщество свободного программного обеспечения Linux от 6.2 до 6.6.145, Сообщество свободного программного обеспечения Linux от 6.7 до 6.12.97, Сообщество свободного программного обеспечения Linux от 6.13 до 6.18.40, Сообщество свободного программного обеспечения Linux от 6.19 до 7.1.5, Сообщество свободного программного обеспечения Linux от 5.16 до 6.1.178, Сообщество свободного программного обеспечения Linux от 5.11 до 5.15.212, Сообщество свободного программного обеспечения Linux от 4.4.204 до 4.5, Сообщество свободного программного обеспечения Linux от 4.9.204 до 4.10, Сообщество свободного программного обеспечения Linux от 4.14.157 до 4.15, Сообщество свободного программного обеспечения Linux от 4.19.87 до 5.10.261

Mitigations

Использование рекомендаций: Для Linux: https://git.kernel.org/stable/c/0e389fc290c350c67591abf4c367119f4689f310 https://git.kernel.org/stable/c/4ab17e328522a4df5fe0f0dcf39098118b1feeaa https://git.kernel.org/stable/c/5927acb3e2c99985a14adecd9d1b67ba191c622d https://git.kernel.org/stable/c/61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766 https://git.kernel.org/stable/c/6371a07148ee979af22a9d6f4c277462953a9a4a https://git.kernel.org/stable/c/9e7a057934cdd58e4cc94350bcfe5367bbee0f8e https://git.kernel.org/stable/c/a4eae1499c760949a93459d11390bd1fd823d31d https://git.kernel.org/stable/c/ecb3f9386f4353034caef77239473c627232db17 Для Ред ОС: http://repo.red-soft.ru/redos/8.0/x86_64/updates/ http://repo.red-soft.ru/redos/8.0/aarch64/updates/ http://repo.red-soft.ru/redos/7.3c/x86_64/updates/ Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2026-80881 https://deb.freexian.com/extended-lts/tracker/CVE-2026-80881 Для Ubuntu: https://ubuntu.com/security/CVE-2026-80881

JSON

To clipboard

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  "CVSS 3.0": "AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "CVSS 4.0": null,
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  "\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, \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "16.04 LTS (Ubuntu), 9 (Debian GNU/Linux), 18.04 LTS (Ubuntu), 10 (Debian GNU/Linux), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 7.3 (\u0420\u0415\u0414 \u041e\u0421), 22.04 LTS (Ubuntu), 24.04 LTS (Ubuntu), 13 (Debian GNU/Linux), 8.0 (\u0420\u0415\u0414 \u041e\u0421), 26.04 LTS (Ubuntu), \u043e\u0442 6.2 \u0434\u043e 6.6.145 (Linux), \u043e\u0442 6.7 \u0434\u043e 6.12.97 (Linux), \u043e\u0442 6.13 \u0434\u043e 6.18.40 (Linux), \u043e\u0442 6.19 \u0434\u043e 7.1.5 (Linux), \u043e\u0442 5.16 \u0434\u043e 6.1.178 (Linux), \u043e\u0442 5.11 \u0434\u043e 5.15.212 (Linux), \u043e\u0442 4.4.204 \u0434\u043e 4.5 (Linux), \u043e\u0442 4.9.204 \u0434\u043e 4.10 (Linux), \u043e\u0442 4.14.157 \u0434\u043e 4.15 (Linux), \u043e\u0442 4.19.87 \u0434\u043e 5.10.261 (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": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f Linux:\nhttps://git.kernel.org/stable/c/0e389fc290c350c67591abf4c367119f4689f310\nhttps://git.kernel.org/stable/c/4ab17e328522a4df5fe0f0dcf39098118b1feeaa\nhttps://git.kernel.org/stable/c/5927acb3e2c99985a14adecd9d1b67ba191c622d\nhttps://git.kernel.org/stable/c/61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766\nhttps://git.kernel.org/stable/c/6371a07148ee979af22a9d6f4c277462953a9a4a\nhttps://git.kernel.org/stable/c/9e7a057934cdd58e4cc94350bcfe5367bbee0f8e\nhttps://git.kernel.org/stable/c/a4eae1499c760949a93459d11390bd1fd823d31d\nhttps://git.kernel.org/stable/c/ecb3f9386f4353034caef77239473c627232db17\n\n\u0414\u043b\u044f \u0420\u0435\u0434 \u041e\u0421:\nhttp://repo.red-soft.ru/redos/8.0/x86_64/updates/\nhttp://repo.red-soft.ru/redos/8.0/aarch64/updates/\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2026-80881\nhttps://deb.freexian.com/extended-lts/tracker/CVE-2026-80881\n\n\u0414\u043b\u044f Ubuntu:\nhttps://ubuntu.com/security/CVE-2026-80881",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "29.05.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "20.10.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "20.10.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-16888",
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  "\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, \u0420\u0415\u0414 \u041e\u0421 (\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 \u21163751), 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 , \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 9 , 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 , \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 7.3  (\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 \u21163751), Canonical Ltd. Ubuntu 22.04 LTS , Canonical Ltd. Ubuntu 24.04 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 13 , \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 8.0  (\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 \u21163751), Canonical Ltd. Ubuntu 26.04 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 6.2 \u0434\u043e 6.6.145 , \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 6.7 \u0434\u043e 6.12.97 , \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 6.13 \u0434\u043e 6.18.40 , \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 6.19 \u0434\u043e 7.1.5 , \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 6.1.178 , \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 5.15.212 , \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 4.4.204 \u0434\u043e 4.5 , \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 4.9.204 \u0434\u043e 4.10 , \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 Linux \u043e\u0442 4.14.157 \u0434\u043e 4.15 , \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 4.19.87 \u0434\u043e 5.10.261 ",
  "\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 ocfs2_read_blocks() \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 fs/ocfs2/buffer_head_io.c \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": "\u041d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u043e\u0442\u043e\u043a\u043e\u043c (CWE-691)",
  "\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 ocfs2_read_blocks() \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 fs/ocfs2/buffer_head_io.c \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\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0433\u043e \u043f\u043e\u0442\u043e\u043a\u0430 \u0443\u043f\u0440\u0430\u0432\u043b\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 \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/0e389fc290c350c67591abf4c367119f4689f310\nhttps://git.kernel.org/stable/c/4ab17e328522a4df5fe0f0dcf39098118b1feeaa\nhttps://git.kernel.org/stable/c/5927acb3e2c99985a14adecd9d1b67ba191c622d\nhttps://git.kernel.org/stable/c/61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766\nhttps://git.kernel.org/stable/c/6371a07148ee979af22a9d6f4c277462953a9a4a\nhttps://git.kernel.org/stable/c/9e7a057934cdd58e4cc94350bcfe5367bbee0f8e\nhttps://git.kernel.org/stable/c/a4eae1499c760949a93459d11390bd1fd823d31d\nhttps://git.kernel.org/stable/c/ecb3f9386f4353034caef77239473c627232db17\nhttps://github.com/advisories/GHSA-5x8p-2x56-54gv\nhttp://repo.red-soft.ru/redos/8.0/x86_64/updates/\nhttp://repo.red-soft.ru/redos/8.0/aarch64/updates/\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/\nhttps://security-tracker.debian.org/tracker/CVE-2026-80881\nhttps://deb.freexian.com/extended-lts/tracker/CVE-2026-80881\nhttps://ubuntu.com/security/CVE-2026-80881",
  "\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-691",
  "\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 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,5)"
}

CVE-2026-80881 (GCVE-0-2026-80881)

Vulnerability from cvelistv5 – Published: 2026-09-04 16:49 – Updated: 2026-09-04 16:49

Title

ocfs2: fix buffer head management in ocfs2_read_blocks()

Summary

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix buffer head management in ocfs2_read_blocks() In ocfs2_read_blocks(), caller should't assume that buffer head returned by 'sb_getblk()' is exclusively owned and so 'put_bh()' always drops b_count from 1 to 0. If it is not so, buffer head remains on hold and likely to be returned by the next call to 'sb_getblk()' unchanged - that is, with BH_Uptodate bit set even if it has failed validation previously, thus allowing to insert that buffer head into OCFS2 metadata cache and submit it to upper layers. To avoid such a scenario, BH_Uptodate should be cleared immediately after 'validate()' callback has detected some data inconsistency.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7018 records in the last 180 days details

References

8 references

URL	Tags
https://git.kernel.org/stable/c/a4eae1499c760949a…
https://git.kernel.org/stable/c/4ab17e328522a4df5…
https://git.kernel.org/stable/c/5927acb3e2c99985a…
https://git.kernel.org/stable/c/ecb3f9386f4353034…
https://git.kernel.org/stable/c/61f7a5acb3bf8fc97…
https://git.kernel.org/stable/c/0e389fc290c350c67…
https://git.kernel.org/stable/c/9e7a057934cdd58e4…
https://git.kernel.org/stable/c/6371a07148ee979af…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < a4eae1499c760949a93459d11390bd1fd823d31d (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 4ab17e328522a4df5fe0f0dcf39098118b1feeaa (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 5927acb3e2c99985a14adecd9d1b67ba191c622d (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < ecb3f9386f4353034caef77239473c627232db17 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 0e389fc290c350c67591abf4c367119f4689f310 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 9e7a057934cdd58e4cc94350bcfe5367bbee0f8e (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 6371a07148ee979af22a9d6f4c277462953a9a4a (git) Affected: 01f93d5e36753fc4d06ec67f05ce78c9c6f2dd56 (git) Affected: 65cbd1279f4b999d56a838344a30642db24cd215 (git) Affected: 97e1db17bc1ef4c2e1789bc9323c7be44fba53f8 (git) Affected: 6c150df9c2e80b5cf86f5a0d98beb7390ad63bfc (git) Affected: 4.4.204 , < 4.5 (semver) Affected: 4.9.204 , < 4.10 (semver) Affected: 4.14.157 , < 4.15 (semver) Affected: 4.19.87 , < 4.20 (semver)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
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              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                },
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                }
              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix buffer head management in ocfs2_read_blocks()\n\nIn ocfs2_read_blocks(), caller should\u0027t assume that buffer head returned\nby \u0027sb_getblk()\u0027 is exclusively owned and so \u0027put_bh()\u0027 always drops\nb_count from 1 to 0.  If it is not so, buffer head remains on hold and\nlikely to be returned by the next call to \u0027sb_getblk()\u0027 unchanged - that\nis, with BH_Uptodate bit set even if it has failed validation previously,\nthus allowing to insert that buffer head into OCFS2 metadata cache and\nsubmit it to upper layers.  To avoid such a scenario, BH_Uptodate should\nbe cleared immediately after \u0027validate()\u0027 callback has detected some data\ninconsistency."
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "title": "ocfs2: fix buffer head management in ocfs2_read_blocks()",
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    "cveId": "CVE-2026-80881",
    "datePublished": "2026-09-04T16:49:11.758Z",
    "dateReserved": "2026-08-26T14:34:25.799Z",
    "dateUpdated": "2026-09-04T16:49:11.758Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2"
}

GHSA-5X8P-2X56-54GV

Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

ocfs2: fix buffer head management in ocfs2_read_blocks()

In ocfs2_read_blocks(), caller should't assume that buffer head returned by 'sb_getblk()' is exclusively owned and so 'put_bh()' always drops b_count from 1 to 0. If it is not so, buffer head remains on hold and likely to be returned by the next call to 'sb_getblk()' unchanged - that is, with BH_Uptodate bit set even if it has failed validation previously, thus allowing to insert that buffer head into OCFS2 metadata cache and submit it to upper layers. To avoid such a scenario, BH_Uptodate should be cleared immediately after 'validate()' callback has detected some data inconsistency.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80881"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T17:17:00Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix buffer head management in ocfs2_read_blocks()\n\nIn ocfs2_read_blocks(), caller should\u0027t assume that buffer head returned\nby \u0027sb_getblk()\u0027 is exclusively owned and so \u0027put_bh()\u0027 always drops\nb_count from 1 to 0.  If it is not so, buffer head remains on hold and\nlikely to be returned by the next call to \u0027sb_getblk()\u0027 unchanged - that\nis, with BH_Uptodate bit set even if it has failed validation previously,\nthus allowing to insert that buffer head into OCFS2 metadata cache and\nsubmit it to upper layers.  To avoid such a scenario, BH_Uptodate should\nbe cleared immediately after \u0027validate()\u0027 callback has detected some data\ninconsistency.",
  "id": "GHSA-5x8p-2x56-54gv",
  "modified": "2026-09-04T18:31:32Z",
  "published": "2026-09-04T18:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80881"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e389fc290c350c67591abf4c367119f4689f310"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ab17e328522a4df5fe0f0dcf39098118b1feeaa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5927acb3e2c99985a14adecd9d1b67ba191c622d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6371a07148ee979af22a9d6f4c277462953a9a4a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e7a057934cdd58e4cc94350bcfe5367bbee0f8e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4eae1499c760949a93459d11390bd1fd823d31d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ecb3f9386f4353034caef77239473c627232db17"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

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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.
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BDU:2026-16888 (CVE-2026-80881)

CVE-2026-80881 (GCVE-0-2026-80881)

GHSA-5X8P-2X56-54GV

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