Vulnerability-Lookup

BDU:2026-02385 (CVE-2025-40167)

Vulnerability from fstec – Published: 2026-03-02 – Updated: 2026-07-06 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции __ext4_iget() в файле fs/ext4/inode.c ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции __ext4_iget() в файле fs/ext4/inode.cядра операционной системы Linux связана с некорректной проверкой входных данных. 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

4.3 (Medium) CVSS 4.0


                      
                        CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-20 - Недостаточная проверка вводимых данных

Aliases

CVE-2025-40167

References

13 references

URL
https://git.kernel.org/stable/c/1437c95ab2a28b138d4521653583729f61ccb48b
https://git.kernel.org/stable/c/1d3ad183943b38eec2acf72a0ae98e635dc8456b
https://git.kernel.org/stable/c/1f5ccd22ff482639133f2a0fe08f6d19d0e68717
https://git.kernel.org/stable/c/2e9e10657b04152ed0d6ecae8d0c02a3405e28f5
https://git.kernel.org/stable/c/4954d297c91d292630ab43ba4d195dc371ce65d3
https://git.kernel.org/stable/c/cb6039b68efa547b676a8a10fc4618d9d1865c23
https://git.kernel.org/stable/c/de985264eef64be8a90595908f2e6a87946dad34
https://git.kernel.org/stable/c/f061f7c331fc16250fc82aa68964f35821687217
https://www.cybersecurity-help.cz/vdb/SB2025112849
https://security-tracker.debian.org/tracker/CVE-2025-40167
https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18
https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38
https://cve.omp.ru/bb31516

Impacted products

9 products from 4 vendors

Vendors

Сообщество свободного программного обеспечения, Novell Inc., ООО «РусБИТех-Астра», ООО «Открытая мобильная платформа»

Products

Debian GNU/Linux, SUSE Linux Enterprise Micro, Suse Linux Enterprise Desktop, Suse Linux Enterprise Server, OpenSUSE Leap, Astra Linux Special Edition (запись в едином реестре российских программ №369), SUSE Linux Micro, Linux, ОС Аврора (запись в едином реестре российских программ №1543)

Versions

11 (Debian GNU/Linux), 5.2 (SUSE Linux Enterprise Micro), 5.3 (SUSE Linux Enterprise Micro), 5.4 (SUSE Linux Enterprise Micro), 5.5 (SUSE Linux Enterprise Micro), 15 SP6 (Suse Linux Enterprise Desktop), 15 SP6 (Suse Linux Enterprise Server), 15.6 (OpenSUSE Leap), 1.8 (Astra Linux Special Edition), 15 SP7 (Suse Linux Enterprise Desktop), 15 SP7 (Suse Linux Enterprise Server), 6.0 (SUSE Linux Micro), 6.1 (SUSE Linux Micro), до 5.4.301 (Linux), до 6.12.55 (Linux), до 6.1.158 (Linux), до 5.15.196 (Linux), до 6.6.114 (Linux), 6.2 (SUSE Linux Micro), 3.8 (Astra Linux Special Edition), до 5.1.8 (ОС Аврора)

Product types

Operating system, Application software

Platforms

Сообщество свободного программного обеспечения Debian GNU/Linux 11, Novell Inc. Suse Linux Enterprise Desktop 15 SP6, Novell Inc. Suse Linux Enterprise Server 15 SP6, Novell Inc. OpenSUSE Leap 15.6, ООО «РусБИТех-Астра» Astra Linux Special Edition 1.8 (запись в едином реестре российских программ №369), Novell Inc. Suse Linux Enterprise Desktop 15 SP7, Novell Inc. Suse Linux Enterprise Server 15 SP7, Novell Inc. SUSE Linux Micro 6.0, Novell Inc. SUSE Linux Micro 6.1, Сообщество свободного программного обеспечения Linux до 5.4.301, Сообщество свободного программного обеспечения Linux до 6.12.55, Сообщество свободного программного обеспечения Linux до 6.1.158, Сообщество свободного программного обеспечения Linux до 5.15.196, Сообщество свободного программного обеспечения Linux до 6.6.114, Novell Inc. SUSE Linux Micro 6.2, ООО «РусБИТех-Астра» Astra Linux Special Edition 3.8 (запись в едином реестре российских программ №369), ООО «Открытая мобильная платформа» ОС Аврора до 5.1.8 (запись в едином реестре российских программ №1543)

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/1437c95ab2a28b138d4521653583729f61ccb48b https://git.kernel.org/stable/c/1d3ad183943b38eec2acf72a0ae98e635dc8456b https://git.kernel.org/stable/c/1f5ccd22ff482639133f2a0fe08f6d19d0e68717 https://git.kernel.org/stable/c/2e9e10657b04152ed0d6ecae8d0c02a3405e28f5 https://git.kernel.org/stable/c/4954d297c91d292630ab43ba4d195dc371ce65d3 https://git.kernel.org/stable/c/cb6039b68efa547b676a8a10fc4618d9d1865c23 https://git.kernel.org/stable/c/de985264eef64be8a90595908f2e6a87946dad34 https://git.kernel.org/stable/c/f061f7c331fc16250fc82aa68964f35821687217 Для программных продуктов Novell Inc.: https://www.suse.com/pt-br/security/cve/CVE-2025-40167.html Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2025-40167 Для ОС Astra Linux: - обновить пакет linux-6.1 до 6.1.158-1.astra1+ci8 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18 - обновить пакет linux-6.12 до 6.12.60-1.astra1+ci20 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18 Для ОС Astra Linux: обновить пакет linux-6.1 до 6.1.158-1.astra1+ci8 или более высокой версии, используя рекомендации производителя: https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38 Для ОС Аврора: Обновление программного комплекса до версии 5.1.8 или выше

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": "AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear",
  "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, Novell Inc., \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb, \u041e\u041e\u041e \u00ab\u041e\u0442\u043a\u0440\u044b\u0442\u0430\u044f \u043c\u043e\u0431\u0438\u043b\u044c\u043d\u0430\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "11 (Debian GNU/Linux), 5.2 (SUSE Linux Enterprise Micro), 5.3 (SUSE Linux Enterprise Micro), 5.4 (SUSE Linux Enterprise Micro), 5.5 (SUSE Linux Enterprise Micro), 15 SP6 (Suse Linux Enterprise Desktop), 15 SP6 (Suse Linux Enterprise Server), 15.6 (OpenSUSE Leap), 1.8 (Astra Linux Special Edition), 15 SP7 (Suse Linux Enterprise Desktop), 15 SP7 (Suse Linux Enterprise Server), 6.0 (SUSE Linux Micro), 6.1 (SUSE Linux Micro), \u0434\u043e 5.4.301 (Linux), \u0434\u043e 6.12.55 (Linux), \u0434\u043e 6.1.158 (Linux), \u0434\u043e 5.15.196 (Linux), \u0434\u043e 6.6.114 (Linux), 6.2 (SUSE Linux Micro), 3.8 (Astra Linux Special Edition), \u0434\u043e 5.1.8 (\u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0412 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0438\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \"\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u043e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c LINUX\", \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0432 \u043c\u0435\u0442\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0435 \u0424\u0421\u0422\u042d\u041a \u0420\u043e\u0441\u0441\u0438\u0438, \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0451\u043d\u043d\u043e\u043c 25 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2022 \u0433\u043e\u0434\u0430.\n\n\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f Linux:\nhttps://git.kernel.org/stable/c/1437c95ab2a28b138d4521653583729f61ccb48b\nhttps://git.kernel.org/stable/c/1d3ad183943b38eec2acf72a0ae98e635dc8456b\nhttps://git.kernel.org/stable/c/1f5ccd22ff482639133f2a0fe08f6d19d0e68717\nhttps://git.kernel.org/stable/c/2e9e10657b04152ed0d6ecae8d0c02a3405e28f5\nhttps://git.kernel.org/stable/c/4954d297c91d292630ab43ba4d195dc371ce65d3\nhttps://git.kernel.org/stable/c/cb6039b68efa547b676a8a10fc4618d9d1865c23\nhttps://git.kernel.org/stable/c/de985264eef64be8a90595908f2e6a87946dad34\nhttps://git.kernel.org/stable/c/f061f7c331fc16250fc82aa68964f35821687217\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Novell Inc.:\nhttps://www.suse.com/pt-br/security/cve/CVE-2025-40167.html\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2025-40167\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.1 \u0434\u043e 6.1.158-1.astra1+ci8 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18\n- \u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.12 \u0434\u043e 6.12.60-1.astra1+ci20 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n\u043e\u0431\u043d\u043e\u0432\u0438\u0442\u044c \u043f\u0430\u043a\u0435\u0442 linux-6.1 \u0434\u043e 6.1.158-1.astra1+ci8 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430: \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043a\u043e\u043c\u043f\u043b\u0435\u043a\u0441\u0430 \u0434\u043e \u0432\u0435\u0440\u0441\u0438\u0438 5.1.8 \u0438\u043b\u0438 \u0432\u044b\u0448\u0435",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "10.10.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "06.07.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "02.03.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-02385",
  "\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-2025-40167",
  "\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, SUSE Linux Enterprise Micro, Suse Linux Enterprise Desktop, Suse Linux Enterprise Server, OpenSUSE Leap, Astra Linux Special Edition (\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 \u2116369), SUSE Linux Micro, Linux, \u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430 (\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 \u21161543)",
  "\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 11 , Novell Inc. Suse Linux Enterprise Desktop 15 SP6 , Novell Inc. Suse Linux Enterprise Server 15 SP6 , Novell Inc. OpenSUSE Leap 15.6 , \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 1.8  (\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 \u2116369), Novell Inc. Suse Linux Enterprise Desktop 15 SP7 , Novell Inc. Suse Linux Enterprise Server 15 SP7 , Novell Inc. SUSE Linux Micro 6.0 , Novell Inc. SUSE Linux Micro 6.1 , \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 \u0434\u043e 5.4.301 , \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 \u0434\u043e 6.12.55 , \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 \u0434\u043e 6.1.158 , \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 \u0434\u043e 5.15.196 , \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 \u0434\u043e 6.6.114 , Novell Inc. SUSE Linux Micro 6.2 , \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 3.8  (\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 \u2116369), \u041e\u041e\u041e \u00ab\u041e\u0442\u043a\u0440\u044b\u0442\u0430\u044f \u043c\u043e\u0431\u0438\u043b\u044c\u043d\u0430\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u00bb \u041e\u0421 \u0410\u0432\u0440\u043e\u0440\u0430 \u0434\u043e 5.1.8  (\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 \u21161543)",
  "\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 __ext4_iget() \u0432 \u0444\u0430\u0439\u043b\u0435 fs/ext4/inode.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\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u0432\u0432\u043e\u0434\u0438\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 (CWE-20)",
  "\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 __ext4_iget() \u0432 \u0444\u0430\u0439\u043b\u0435 fs/ext4/inode.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 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u0432\u0445\u043e\u0434\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445. \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 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://git.kernel.org/stable/c/1437c95ab2a28b138d4521653583729f61ccb48b\nhttps://git.kernel.org/stable/c/1d3ad183943b38eec2acf72a0ae98e635dc8456b\nhttps://git.kernel.org/stable/c/1f5ccd22ff482639133f2a0fe08f6d19d0e68717\nhttps://git.kernel.org/stable/c/2e9e10657b04152ed0d6ecae8d0c02a3405e28f5\nhttps://git.kernel.org/stable/c/4954d297c91d292630ab43ba4d195dc371ce65d3\nhttps://git.kernel.org/stable/c/cb6039b68efa547b676a8a10fc4618d9d1865c23\nhttps://git.kernel.org/stable/c/de985264eef64be8a90595908f2e6a87946dad34\nhttps://git.kernel.org/stable/c/f061f7c331fc16250fc82aa68964f35821687217\nhttps://www.cybersecurity-help.cz/vdb/SB2025112849\nhttps://security-tracker.debian.org/tracker/CVE-2025-40167\nhttps://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18\nhttps://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38\nhttps://cve.omp.ru/bb31516",
  "\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, \u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-20",
  "\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)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u043e\u0446\u0435\u043d\u043a\u0430 CVSS 4.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 4,3)"
}

CVE-2025-40167 (GCVE-0-2025-40167)

Vulnerability from cvelistv5 – Published: 2025-11-12 10:26 – Updated: 2026-08-05 12:08

Title

ext4: detect invalid INLINE_DATA + EXTENTS flag combination

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: detect invalid INLINE_DATA + EXTENTS flag combination syzbot reported a BUG_ON in ext4_es_cache_extent() when opening a verity file on a corrupted ext4 filesystem mounted without a journal. The issue is that the filesystem has an inode with both the INLINE_DATA and EXTENTS flags set: EXT4-fs error (device loop0): ext4_cache_extents:545: inode #15: comm syz.0.17: corrupted extent tree: lblk 0 < prev 66 Investigation revealed that the inode has both flags set: DEBUG: inode 15 - flag=1, i_inline_off=164, has_inline=1, extents_flag=1 This is an invalid combination since an inode should have either: - INLINE_DATA: data stored directly in the inode - EXTENTS: data stored in extent-mapped blocks Having both flags causes ext4_has_inline_data() to return true, skipping extent tree validation in __ext4_iget(). The unvalidated out-of-order extents then trigger a BUG_ON in ext4_es_cache_extent() due to integer underflow when calculating hole sizes. Fix this by detecting this invalid flag combination early in ext4_iget() and rejecting the corrupted inode.

Severity

7.8 (High)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/4954d297c91d29263…
https://git.kernel.org/stable/c/f061f7c331fc16250…
https://git.kernel.org/stable/c/2e9e10657b04152ed…
https://git.kernel.org/stable/c/1437c95ab2a28b138…
https://git.kernel.org/stable/c/cb6039b68efa547b6…
https://git.kernel.org/stable/c/de985264eef64be8a…
https://git.kernel.org/stable/c/1f5ccd22ff4826391…
https://git.kernel.org/stable/c/1d3ad183943b38eec…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f19d5870cbf72d4cb2a8e1f749dff97af99b071e , < 4954d297c91d292630ab43ba4d195dc371ce65d3 (git) Affected: f19d5870cbf72d4cb2a8e1f749dff97af99b071e , < f061f7c331fc16250fc82aa68964f35821687217 (git) Affected: f19d5870cbf72d4cb2a8e1f749dff97af99b071e , < 2e9e10657b04152ed0d6ecae8d0c02a3405e28f5 (git) Affected: f19d5870cbf72d4cb2a8e1f749dff97af99b071e , < 1437c95ab2a28b138d4521653583729f61ccb48b (git) Affected: f19d5870cbf72d4cb2a8e1f749dff97af99b071e , < cb6039b68efa547b676a8a10fc4618d9d1865c23 (git) Affected: f19d5870cbf72d4cb2a8e1f749dff97af99b071e , < de985264eef64be8a90595908f2e6a87946dad34 (git) Affected: f19d5870cbf72d4cb2a8e1f749dff97af99b071e , < 1f5ccd22ff482639133f2a0fe08f6d19d0e68717 (git) Affected: f19d5870cbf72d4cb2a8e1f749dff97af99b071e , < 1d3ad183943b38eec2acf72a0ae98e635dc8456b (git)
Linux	Linux	Affected: 3.8 Unaffected: 0 , < 3.8 (semver) Unaffected: 5.4.301 , ≤ 5.4.* (semver) Unaffected: 5.10.246 , ≤ 5.10.* (semver) Unaffected: 5.15.196 , ≤ 5.15.* (semver) Unaffected: 6.1.158 , ≤ 6.1.* (semver) Unaffected: 6.6.114 , ≤ 6.6.* (semver) Unaffected: 6.12.55 , ≤ 6.12.* (semver) Unaffected: 6.17.5 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4954d297c91d292630ab43ba4d195dc371ce65d3",
              "status": "affected",
              "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e",
              "versionType": "git"
            },
            {
              "lessThan": "f061f7c331fc16250fc82aa68964f35821687217",
              "status": "affected",
              "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e",
              "versionType": "git"
            },
            {
              "lessThan": "2e9e10657b04152ed0d6ecae8d0c02a3405e28f5",
              "status": "affected",
              "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e",
              "versionType": "git"
            },
            {
              "lessThan": "1437c95ab2a28b138d4521653583729f61ccb48b",
              "status": "affected",
              "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e",
              "versionType": "git"
            },
            {
              "lessThan": "cb6039b68efa547b676a8a10fc4618d9d1865c23",
              "status": "affected",
              "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e",
              "versionType": "git"
            },
            {
              "lessThan": "de985264eef64be8a90595908f2e6a87946dad34",
              "status": "affected",
              "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e",
              "versionType": "git"
            },
            {
              "lessThan": "1f5ccd22ff482639133f2a0fe08f6d19d0e68717",
              "status": "affected",
              "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e",
              "versionType": "git"
            },
            {
              "lessThan": "1d3ad183943b38eec2acf72a0ae98e635dc8456b",
              "status": "affected",
              "version": "f19d5870cbf72d4cb2a8e1f749dff97af99b071e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.301",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.246",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.196",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.301",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.246",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.196",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.158",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.114",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.55",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.5",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: detect invalid INLINE_DATA + EXTENTS flag combination\n\nsyzbot reported a BUG_ON in ext4_es_cache_extent() when opening a verity\nfile on a corrupted ext4 filesystem mounted without a journal.\n\nThe issue is that the filesystem has an inode with both the INLINE_DATA\nand EXTENTS flags set:\n\n    EXT4-fs error (device loop0): ext4_cache_extents:545: inode #15:\n    comm syz.0.17: corrupted extent tree: lblk 0 \u003c prev 66\n\nInvestigation revealed that the inode has both flags set:\n    DEBUG: inode 15 - flag=1, i_inline_off=164, has_inline=1, extents_flag=1\n\nThis is an invalid combination since an inode should have either:\n- INLINE_DATA: data stored directly in the inode\n- EXTENTS: data stored in extent-mapped blocks\n\nHaving both flags causes ext4_has_inline_data() to return true, skipping\nextent tree validation in __ext4_iget(). The unvalidated out-of-order\nextents then trigger a BUG_ON in ext4_es_cache_extent() due to integer\nunderflow when calculating hole sizes.\n\nFix this by detecting this invalid flag combination early in ext4_iget()\nand rejecting the corrupted inode."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The invalid flag combination can only be delivered on a crafted ext4 on-disk image attached locally (USB stick, SD card, loop-mounted file), and the bug fires during `ext4_iget()`/`ext4_map_blocks()` on the local mount; there is no network-facing input into this code path.\nAC:L - The attacker fully controls the image and merely sets both INLINE_DATA_FL and EXTENTS_FL on an inode with a `system.data` xattr, formatting without a journal \u2014 this deterministically bypasses `ext4_ext_check_inode()` and trips `BUG_ON(end \u003c lblk)` on every open, with no race, timing, or memory-layout condition outside the attacker\u0027s control.\nPR:N - The attacker needs no account or privilege on the target \u2014 they only supply the malicious filesystem image, and the privileged mount plus the subsequent file access are performed by the victim, an indexer/thumbnailer, or an automounter such as udisks2 or vold.\nUI:R - Because `ext4_fs_type` lacks `FS_USERNS_MOUNT` and `INLINE_DATA_FL` is not in `EXT4_FL_USER_MODIFIABLE`, the corrupt inode cannot be created on a live filesystem; a user or automounter must actually mount the attacker-supplied ext4 image.\nS:U - The out-of-bounds accesses and the panic are confined to the mounting host\u0027s kernel memory and its own filesystem, within a single security authority; no VM, hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - Skipping `__ext4_ext_check()` leaves `eh_entries` unvalidated (up to 65535 versus the 4 that fit in the 60-byte `i_block[]`), so `ext4_cache_extents()` and `ext4_ext_binsearch()` read hundreds of kilobytes past the `ext4_inode_info` slab object, and those out-of-bounds kernel bytes are interpreted as physical block numbers that drive real disk reads and are reported back to userspace through FIEMAP.\nI:H - The unvalidated `eh_max` defeats the `eh_entries \u003e= eh_max` guard in `ext4_ext_insert_extent()`, so extent entries are memmoved and written past the end of `i_block[]` into adjacent `ext4_inode_info` slab fields, giving a heap out-of-bounds write; the missing `ext4_valid_extent()`/`ext4_inode_block_valid()` check additionally lets writes and block frees land on superblock, bitmap, and group-descriptor blocks.\nA:H - The out-of-order extents produce an integer underflow in `lblk - prev` and hit `BUG_ON(end \u003c lblk)` in `ext4_es_cache_extent()`, an immediate and reliably reproducible kernel panic on every access to the crafted file; the out-of-bounds slab reads independently oops the kernel on KASAN and hardened builds."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:08:12.384Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4954d297c91d292630ab43ba4d195dc371ce65d3"
        },
        {
          "url": "https://git.kernel.org/stable/c/f061f7c331fc16250fc82aa68964f35821687217"
        },
        {
          "url": "https://git.kernel.org/stable/c/2e9e10657b04152ed0d6ecae8d0c02a3405e28f5"
        },
        {
          "url": "https://git.kernel.org/stable/c/1437c95ab2a28b138d4521653583729f61ccb48b"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb6039b68efa547b676a8a10fc4618d9d1865c23"
        },
        {
          "url": "https://git.kernel.org/stable/c/de985264eef64be8a90595908f2e6a87946dad34"
        },
        {
          "url": "https://git.kernel.org/stable/c/1f5ccd22ff482639133f2a0fe08f6d19d0e68717"
        },
        {
          "url": "https://git.kernel.org/stable/c/1d3ad183943b38eec2acf72a0ae98e635dc8456b"
        }
      ],
      "title": "ext4: detect invalid INLINE_DATA + EXTENTS flag combination",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40167",
    "datePublished": "2025-11-12T10:26:24.498Z",
    "dateReserved": "2025-04-16T07:20:57.176Z",
    "dateUpdated": "2026-08-05T12:08:12.384Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

BDU:2026-02385 (CVE-2025-40167)

CVE-2025-40167 (GCVE-0-2025-40167)

Tags

Sightings

Nomenclature

Related by attack behaviour