Vulnerability-Lookup

BDU:2026-12095 (CVE-2026-43125)

Vulnerability from fstec – Published: 2026-08-24 – Updated: 2026-09-07 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции dlm_search_rsb_tree() модуля fs/dlm/lock.c подсистемы Dlm ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Summary

Уязвимость функции dlm_search_rsb_tree() модуля fs/dlm/lock.c подсистемы Dlm ядра операционной системы Linux связана с копированием буфера без проверки размера входных данных (классическое переполнение буфера). Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Severity

10.0 (High) CVSS 2.0


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

9.8 (Critical) CVSS 3.1


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource manipulation, Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-20 - Недостаточная проверка вводимых данных
CWE-120 - Копирование буфера без проверки размера входных данных (классическое переполнение буфера)
CWE-130 - Неправильная обработка несоответствия параметра длины
CWE-787 - Запись за границами буфера

Aliases

CVE-2026-43125

References

9 references

URL
https://www.cve.org/CVERecord?id=CVE-2026-43125
https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71
https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6
https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438
https://git.kernel.org/linus/080e5563f878c64e697b89e7439d730d0daad882
https://lore.kernel.org/linux-cve-announce/2026050619-CVE-2026-43125-c9f9@gregkh/
https://security-tracker.debian.org/tracker/CVE-2026-43125
https://access.redhat.com/security/cve/cve-2026-43125
https://altsp.su/obnovleniya-bezopasnosti/

Impacted products

4 products from 4 vendors

Vendors

Red Hat, Inc., АО «ИВК», Сообщество свободного программного обеспечения

Products

Red Hat Enterprise Linux, АЛЬТ СП 10, Debian GNU/Linux, Linux

Versions

8 (Red Hat Enterprise Linux), 9 (Red Hat Enterprise Linux), - (АЛЬТ СП 10), 8.6 Advanced Mission Critical Update Support (Red Hat Enterprise Linux), 7 Extended Lifecycle Support (Red Hat Enterprise Linux), 8.8 Telecommunications Update Service (Red Hat Enterprise Linux), 8.8 Update Services for SAP Solutions (Red Hat Enterprise Linux), 9.2 Update Services for SAP Solutions (Red Hat Enterprise Linux), 13 (Debian GNU/Linux), 8.6 Extended Update Support Long-Life Add-On (Red Hat Enterprise Linux), 9.6 Extended Update Support (Red Hat Enterprise Linux), 9.4 Update Services for SAP Solutions (Red Hat Enterprise Linux), от 3.4 до 6.12.74 включительно (Linux), от 6.13 до 6.18.15 включительно (Linux), от 6.19 до 6.19.5 включительно (Linux)

Product types

Operating system

Platforms

Red Hat, Inc. Red Hat Enterprise Linux 8, Inc. Red Hat Enterprise Linux 9, АО «ИВК» АЛЬТ СП 10 -, Inc. Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Inc. Red Hat Enterprise Linux 7 Extended Lifecycle Support, Inc. Red Hat Enterprise Linux 8.8 Telecommunications Update Service, Inc. Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Inc. Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Сообщество свободного программного обеспечения Debian GNU/Linux 13, Inc. Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On, Inc. Red Hat Enterprise Linux 9.6 Extended Update Support, Inc. Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions, Сообщество свободного программного обеспечения Linux от 3.4 до 6.12.74 включительно, Сообщество свободного программного обеспечения Linux от 6.13 до 6.18.15 включительно, Сообщество свободного программного обеспечения Linux от 6.19 до 6.19.5 включительно

Mitigations

В условиях отсутствия обновлений безопасности от производителя рекомендуется придерживаться "Рекомендаций по безопасной настройке операционных систем LINUX", изложенных в методическом документе ФСТЭК России, утверждённом 25 декабря 2022 года. Использование рекомендаций: Для Linux: https://lore.kernel.org/linux-cve-announce/2026050619-CVE-2026-43125-c9f9@gregkh/ https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71 https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6 https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438 https://git.kernel.org/linus/080e5563f878c64e697b89e7439d730d0daad882 Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2026-43125 Для продуктов Red Hat Inc.: https://access.redhat.com/security/cve/cve-2026-43125 Для ОС АЛЬТ СП 10: установка обновления из публичного репозитория программного средства: https://altsp.su/obnovleniya-bezopasnosti/

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Red Hat, Inc., \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb, \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "8 (Red Hat Enterprise Linux), 9 (Red Hat Enterprise Linux), - (\u0410\u041b\u042c\u0422 \u0421\u041f 10), 8.6 Advanced Mission Critical Update Support (Red Hat Enterprise Linux), 7 Extended Lifecycle Support (Red Hat Enterprise Linux), 8.8 Telecommunications Update Service (Red Hat Enterprise Linux), 8.8 Update Services for SAP Solutions (Red Hat Enterprise Linux), 9.2 Update Services for SAP Solutions (Red Hat Enterprise Linux), 13 (Debian GNU/Linux), 8.6 Extended Update Support Long-Life Add-On (Red Hat Enterprise Linux), 9.6 Extended Update Support (Red Hat Enterprise Linux), 9.4 Update Services for SAP Solutions (Red Hat Enterprise Linux), \u043e\u0442 3.4 \u0434\u043e 6.12.74 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 6.13 \u0434\u043e 6.18.15 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 6.19 \u0434\u043e 6.19.5 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0412 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0438\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \"\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u043e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c LINUX\", \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0432 \u043c\u0435\u0442\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0435 \u0424\u0421\u0422\u042d\u041a \u0420\u043e\u0441\u0441\u0438\u0438, \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0451\u043d\u043d\u043e\u043c 25 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2022 \u0433\u043e\u0434\u0430.\n\n\n\n\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\n\u0414\u043b\u044f Linux:\nhttps://lore.kernel.org/linux-cve-announce/2026050619-CVE-2026-43125-c9f9@gregkh/\nhttps://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71\nhttps://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6\nhttps://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438\nhttps://git.kernel.org/linus/080e5563f878c64e697b89e7439d730d0daad882\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2026-43125\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\nhttps://access.redhat.com/security/cve/cve-2026-43125\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u041b\u042c\u0422 \u0421\u041f 10: \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0437 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e\u0433\u043e \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430: https://altsp.su/obnovleniya-bezopasnosti/",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "20.01.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "07.09.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "24.08.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-12095",
  "\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-2026-43125",
  "\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": "Red Hat Enterprise Linux, \u0410\u041b\u042c\u0422 \u0421\u041f 10, Debian GNU/Linux, Linux",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Red Hat, Inc. Red Hat Enterprise Linux 8 , Red Hat, Inc. Red Hat Enterprise Linux 9 , \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb \u0410\u041b\u042c\u0422 \u0421\u041f 10 - , Red Hat, Inc. Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support , Red Hat, Inc. Red Hat Enterprise Linux 7 Extended Lifecycle Support , Red Hat, Inc. Red Hat Enterprise Linux 8.8 Telecommunications Update Service , Red Hat, Inc. Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions , Red Hat, Inc. Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions , \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 , Red Hat, Inc. Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On , Red Hat, Inc. Red Hat Enterprise Linux 9.6 Extended Update Support , Red Hat, Inc. Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 3.4 \u0434\u043e 6.12.74 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 6.13 \u0434\u043e 6.18.15 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u043e\u0442 6.19 \u0434\u043e 6.19.5 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e ",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 dlm_search_rsb_tree() \u043c\u043e\u0434\u0443\u043b\u044f fs/dlm/lock.c \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b Dlm \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\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), \u041a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0431\u0443\u0444\u0435\u0440\u0430 \u0431\u0435\u0437 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0440\u0430\u0437\u043c\u0435\u0440\u0430 \u0432\u0445\u043e\u0434\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 (\u043a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0431\u0443\u0444\u0435\u0440\u0430) (CWE-120), \u041d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u0430\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u043d\u0435\u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u044f \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430 \u0434\u043b\u0438\u043d\u044b (CWE-130), \u0417\u0430\u043f\u0438\u0441\u044c \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u0430\u043c\u0438 \u0431\u0443\u0444\u0435\u0440\u0430 (CWE-787)",
  "\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 dlm_search_rsb_tree() \u043c\u043e\u0434\u0443\u043b\u044f fs/dlm/lock.c \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b Dlm \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 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0431\u0443\u0444\u0435\u0440\u0430 \u0431\u0435\u0437 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0440\u0430\u0437\u043c\u0435\u0440\u0430 \u0432\u0445\u043e\u0434\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 (\u043a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0431\u0443\u0444\u0435\u0440\u0430). \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e, \u043e\u043a\u0430\u0437\u0430\u0442\u044c \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u044c \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438, \u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://www.cve.org/CVERecord?id=CVE-2026-43125\nhttps://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71\nhttps://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6\nhttps://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438\nhttps://git.kernel.org/linus/080e5563f878c64e697b89e7439d730d0daad882\nhttps://lore.kernel.org/linux-cve-announce/2026050619-CVE-2026-43125-c9f9@gregkh/\nhttps://security-tracker.debian.org/tracker/CVE-2026-43125\nhttps://access.redhat.com/security/cve/cve-2026-43125\nhttps://altsp.su/obnovleniya-bezopasnosti/",
  "\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-20, CWE-120, CWE-130, CWE-787",
  "\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": "\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 10)\n\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 9,8)"
}

CVE-2026-43125 (GCVE-0-2026-43125)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-08-25 12:05

Title

dlm: validate length in dlm_search_rsb_tree

Summary

In the Linux kernel, the following vulnerability has been resolved: dlm: validate length in dlm_search_rsb_tree The len parameter in dlm_dump_rsb_name() is not validated and comes from network messages. When it exceeds DLM_RESNAME_MAXLEN, it can cause out-of-bounds write in dlm_search_rsb_tree(). Add length validation to prevent potential buffer overflow.

Severity

9.8 (Critical)


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

7 (High)


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

CWE

CWE-130 - Improper Handling of Length Parameter Inconsistency

Assigner

Linux mitre root

References

25 references

URL	Tags
https://git.kernel.org/stable/c/67288113c5e6cf9e6…
https://git.kernel.org/stable/c/082083c9fbd99422a…
https://git.kernel.org/stable/c/5f053a2e7209d326c…
https://git.kernel.org/stable/c/080e5563f878c64e6…
https://access.redhat.com/security/cve/CVE-2026-43125	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2467234	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:35844	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:41236	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34095	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36767	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34094	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25217	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25121	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:55762	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:59091	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33899	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:35863	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:55761	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:55837	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56224	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56225	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:55763	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25120	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33900	vendor-advisoryx_refsource_REDHAT

Impacted products

23 products

Vendor	Product	Version
Linux	Linux	Affected: 7210cb7a72a22303cdb225bd1aea28697a17bbae , < 67288113c5e6cf9e659b4065c0ed6f16100e0c71 (git) Affected: 7210cb7a72a22303cdb225bd1aea28697a17bbae , < 082083c9fbd99422a0370fe2102144a231c9f5d6 (git) Affected: 7210cb7a72a22303cdb225bd1aea28697a17bbae , < 5f053a2e7209d326cbbc07738fa6d6893d307438 (git) Affected: 7210cb7a72a22303cdb225bd1aea28697a17bbae , < 080e5563f878c64e697b89e7439d730d0daad882 (git)
Linux	Linux	Affected: 3.4 Unaffected: 0 , < 3.4 (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	Unaffected: 0:3.10.0-1160.155.1.rt56.1307.el7 , < * (rpm) cpe:/a:redhat:rhel_extras_rt_els:7
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	Unaffected: 0:3.10.0-1160.154.1.el7 , < * (rpm) cpe:/o:redhat:rhel_els:7
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-553.132.1.rt7.473.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::nfv
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.18.0-553.132.1.el8_10 , < * (rpm) cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Unaffected: 0:4.18.0-372.198.1.el8_6 , < * (rpm) cpe:/o:redhat:rhel_aus:8.6
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Unaffected: 0:4.18.0-372.198.1.el8_6 , < * (rpm) cpe:/o:redhat:rhel_eus_long_life:8.6
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Unaffected: 0:4.18.0-477.150.1.el8_8 , < * (rpm) cpe:/o:redhat:rhel_tus:8.8
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Unaffected: 0:4.18.0-477.150.1.el8_8 , < * (rpm) cpe:/o:redhat:rhel_e4s:8.8
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	cpe:/o:redhat:rhel_e4s:8.8
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:5.14.0-687.15.1.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 0:5.14.0-284.178.1.el9_2 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.2
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 0:5.14.0-284.178.1.rt14.463.el9_2 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.2::nfv
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	cpe:/o:redhat:rhel_e4s:9.2
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	Unaffected: 0:5.14.0-427.136.1.el9_4 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.4
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	cpe:/o:redhat:rhel_e4s:9.4
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	Unaffected: 0:5.14.0-570.125.1.el9_6 , < * (rpm) cpe:/a:redhat:rhel_eus:9.6
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	cpe:/o:redhat:rhel_eus:9.6
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6

Show details on NVD website

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{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_extras_rt_els:7"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel-rt",
            "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:3.10.0-1160.155.1.rt56.1307.el7",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:rhel_els:7"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:3.10.0-1160.154.1.el7",
                "versionType": "rpm"
              }
            ]
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          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The vulnerable path is reached by DLM recovery messages received over the kernel DLM TCP/SCTP lowcomms transport from a remote cluster peer. Although the peer address must match configured cluster membership, the bug is triggered by network protocol data delivered to the target kernel.\nAC:L - A remote peer that can send DLM recovery traffic controls the malformed RCOM_LOOKUP packet, including the special debug rc_id and oversized length/name payload. The recovery-state gate is a normal DLM condition that a participating peer can plausibly induce or target, so exploitation does not depend on conditions outside attacker control.\nPR:N - The vulnerable receive path does not require credentials or privileges on the target system before parsing the packet. Cluster peer/source-address admission is not a privilege on the vulnerable host, and there is no DLM authentication check before the oversized name reaches the copy.\nUI:N - No victim user action is required once the target DLM lockspace is active and receiving cluster traffic. The attacker sends the malformed recovery message directly.\nS:U - The impact is compromise or crash of the target kernel within the same security authority. This is not a VM escape, IOMMU bypass, or other cross-scope boundary.\nC:H - The bug is a network-controlled stack buffer overflow in the kernel, copying up to socket-buffer-sized attacker data into a 64-byte resource-name key. Such memory corruption is defensibly exploitable for kernel information disclosure as part of code execution or memory disclosure primitives.\nI:H - The oversized memcpy can corrupt the kernel stack, including control data, from attacker-controlled network bytes. This supports arbitrary kernel memory modification or code execution in the highest reasonable scenario.\nA:H - Even without reliable code execution, the stack overflow can corrupt kernel control state and readily crash or panic the system. The malformed packet can be sent remotely whenever the vulnerable DLM receive path is reachable."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:26:06.027Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71"
        },
        {
          "url": "https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438"
        },
        {
          "url": "https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882"
        }
      ],
      "title": "dlm: validate length in dlm_search_rsb_tree",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43125",
    "datePublished": "2026-05-06T11:27:10.903Z",
    "dateReserved": "2026-05-01T14:12:55.988Z",
    "dateUpdated": "2026-08-25T12:05:44.813Z",
    "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:2026-12095 (CVE-2026-43125)

CVE-2026-43125 (GCVE-0-2026-43125)

Tags

Sightings

Nomenclature

Related by attack behaviour