Vulnerability-Lookup

BDU:2026-08522 (CVE-2026-43502)

Vulnerability from fstec – Published: 2026-06-22 – Updated: 2026-08-04 – View on bdu.fstec.ru Fixed

Title

Уязвимость функции rds_message_purge ядра операционной системы Linux, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Summary

Уязвимость функции rds_message_purge ядра операционной системы Linux связана с выходом операции за границы буфера в памяти. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Severity

7.5 (High) CVSS 2.0


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

7.1 (High) CVSS 3.1


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

7.1 (High) CVSS 4.0


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-119 - Выход операции за границы буфера в памяти

Aliases

CVE-2026-43502, PT-2026-42458

References

11 references

URL
https://www.suse.com/security/cve/CVE-2026-43502.html
https://dbugs.ptsecurity.com/vulnerability/PT-2026-42458
https://security-tracker.debian.org/tracker/CVE-2026-43502
https://access.redhat.com/security/cve/cve-2026-43502
https://git.kernel.org/stable/c/0f5c185fc79a59ee9991234dd6d2a3e5afa6e75b
https://git.kernel.org/stable/c/14ef6fd18db2494098b21e0471bf27a1d8e9993e
https://git.kernel.org/stable/c/21d70744e6d3bbf9293aa1ee6fba7c53ad75275e
https://git.kernel.org/stable/c/3abc8983b2bae3f487f77d9da5527d7d6b210d46
https://git.kernel.org/stable/c/44b550d88b267320459d518c0743a241ab2108fa
https://lore.kernel.org/linux-cve-announce/2026052159-CVE-2026-43502-01ec@gregkh/T/#u
https://altsp.su/obnovleniya-bezopasnosti/

Impacted products

4 products from 3 vendors

Vendors

Novell Inc., АО «ИВК», Сообщество свободного программного обеспечения

Products

openSUSE Tumbleweed, Альт 8 СП (запись в едином реестре российских программ №4305), Debian GNU/Linux, Linux

Versions

- (openSUSE Tumbleweed), - (Альт 8 СП), 13 (Debian GNU/Linux), от 4.17 до 6.6.140 (Linux), от 4.17 до 6.12.88 (Linux), от 4.17 до 6.18.30 (Linux), от 4.17 до 7.0.7 (Linux), от 4.17 до 7.1-rc3 (Linux)

Product types

Operating system

Platforms

Novell Inc. openSUSE Tumbleweed -, АО «ИВК» Альт 8 СП - (запись в едином реестре российских программ №4305), Сообщество свободного программного обеспечения Debian GNU/Linux 13, Сообщество свободного программного обеспечения Linux от 4.17 до 6.6.140, Сообщество свободного программного обеспечения Linux от 4.17 до 6.12.88, Сообщество свободного программного обеспечения Linux от 4.17 до 6.18.30, Сообщество свободного программного обеспечения Linux от 4.17 до 7.0.7, Сообщество свободного программного обеспечения Linux от 4.17 до 7.1-rc3

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/0f5c185fc79a59ee9991234dd6d2a3e5afa6e75b https://git.kernel.org/stable/c/14ef6fd18db2494098b21e0471bf27a1d8e9993e https://git.kernel.org/stable/c/21d70744e6d3bbf9293aa1ee6fba7c53ad75275e https://git.kernel.org/stable/c/3abc8983b2bae3f487f77d9da5527d7d6b210d46 https://git.kernel.org/stable/c/44b550d88b267320459d518c0743a241ab2108fa https://lore.kernel.org/linux-cve-announce/2026052159-CVE-2026-43502-01ec@gregkh/T/#u Для программных продуктов Novell Inc.: https://www.suse.com/security/cve/CVE-2026-43502.html Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2026-43502 Для ОС Альт 8 СП: установка обновления из публичного репозитория программного средства: https://altsp.su/obnovleniya-bezopasnosti/

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:S/C:N/I:P/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
  "CVSS 4.0": "AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/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": "Novell 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": "- (openSUSE Tumbleweed), - (\u0410\u043b\u044c\u0442 8 \u0421\u041f), 13 (Debian GNU/Linux), \u043e\u0442 4.17 \u0434\u043e 6.6.140 (Linux), \u043e\u0442 4.17 \u0434\u043e 6.12.88 (Linux), \u043e\u0442 4.17 \u0434\u043e 6.18.30 (Linux), \u043e\u0442 4.17 \u0434\u043e 7.0.7 (Linux), \u043e\u0442 4.17 \u0434\u043e 7.1-rc3 (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://git.kernel.org/stable/c/0f5c185fc79a59ee9991234dd6d2a3e5afa6e75b\nhttps://git.kernel.org/stable/c/14ef6fd18db2494098b21e0471bf27a1d8e9993e\nhttps://git.kernel.org/stable/c/21d70744e6d3bbf9293aa1ee6fba7c53ad75275e\nhttps://git.kernel.org/stable/c/3abc8983b2bae3f487f77d9da5527d7d6b210d46\nhttps://git.kernel.org/stable/c/44b550d88b267320459d518c0743a241ab2108fa\nhttps://lore.kernel.org/linux-cve-announce/2026052159-CVE-2026-43502-01ec@gregkh/T/#u\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/security/cve/CVE-2026-43502.html\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2026-43502\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u043b\u044c\u0442 8 \u0421\u041f: \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": "21.05.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "04.08.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "22.06.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-08522",
  "\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-2026-43502, PT-2026-42458",
  "\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": "openSUSE Tumbleweed, \u0410\u043b\u044c\u0442 8 \u0421\u041f (\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 \u21164305), 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": "Novell Inc. openSUSE Tumbleweed - , \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb \u0410\u043b\u044c\u0442 8 \u0421\u041f -  (\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 \u21164305), \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 , \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 4.17 \u0434\u043e 6.6.140 , \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 4.17 \u0434\u043e 6.12.88 , \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 4.17 \u0434\u043e 6.18.30 , \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 4.17 \u0434\u043e 7.0.7 , \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 4.17 \u0434\u043e 7.1-rc3 ",
  "\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 rds_message_purge \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": "\u0412\u044b\u0445\u043e\u0434 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u044b \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 \u043f\u0430\u043c\u044f\u0442\u0438 (CWE-119)",
  "\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 rds_message_purge \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 \u0432\u044b\u0445\u043e\u0434\u043e\u043c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u044b \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 \u043f\u0430\u043c\u044f\u0442\u0438. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \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 \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.suse.com/security/cve/CVE-2026-43502.html\nhttps://dbugs.ptsecurity.com/vulnerability/PT-2026-42458\nhttps://security-tracker.debian.org/tracker/CVE-2026-43502\nhttps://access.redhat.com/security/cve/cve-2026-43502\nhttps://git.kernel.org/stable/c/0f5c185fc79a59ee9991234dd6d2a3e5afa6e75b\nhttps://git.kernel.org/stable/c/14ef6fd18db2494098b21e0471bf27a1d8e9993e\nhttps://git.kernel.org/stable/c/21d70744e6d3bbf9293aa1ee6fba7c53ad75275e\nhttps://git.kernel.org/stable/c/3abc8983b2bae3f487f77d9da5527d7d6b210d46\nhttps://git.kernel.org/stable/c/44b550d88b267320459d518c0743a241ab2108fa\nhttps://lore.kernel.org/linux-cve-announce/2026052159-CVE-2026-43502-01ec@gregkh/T/#u\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-119",
  "\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": "\u0412\u044b\u0441\u043e\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 7,5)\n\u0412\u044b\u0441\u043e\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 7,1)\n\u0412\u044b\u0441\u043e\u043a\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 7,1)"
}

CVE-2026-43502 (GCVE-0-2026-43502)

Vulnerability from cvelistv5 – Published: 2026-05-21 12:17 – Updated: 2026-09-15 03:56

Title

net/rds: handle zerocopy send cleanup before the message is queued

Summary

In the Linux kernel, the following vulnerability has been resolved: net/rds: handle zerocopy send cleanup before the message is queued A zerocopy send can fail after user pages have been pinned but before the message is attached to the sending socket. The purge path currently infers zerocopy state from rm->m_rs, so an unqueued message can be cleaned up as if it owned normal payload pages. However, zerocopy ownership is really determined by the presence of op_mmp_znotifier, regardless of whether the message has reached the socket queue. Capture op_mmp_znotifier up front in rds_message_purge() and use it as the cleanup discriminator. If the message is already associated with a socket, keep the existing completion path. Otherwise, drop the pinned page accounting directly and release the notifier before putting the payload pages. This keeps early send failure cleanup consistent with the zerocopy lifetime rules without changing the normal queued completion path.

Severity

7.8 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-14 00:00 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

Linux mitre root

References

9 references

URL	Tags
https://git.kernel.org/stable/c/e9aefdc5c53fe9aed…
https://git.kernel.org/stable/c/46662f7dc59475995…
https://git.kernel.org/stable/c/1e262db7675e27f42…
https://git.kernel.org/stable/c/21d70744e6d3bbf92…
https://git.kernel.org/stable/c/3abc8983b2bae3f48…
https://git.kernel.org/stable/c/14ef6fd18db249409…
https://git.kernel.org/stable/c/0f5c185fc79a59ee9…
https://git.kernel.org/stable/c/44b550d88b2673204…
https://github.com/NebuSec/CyberMeowfia/tree/main…	exploit

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 , < e9aefdc5c53fe9aed108c14e3d155710a1bb14c9 (git) Affected: 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 , < 46662f7dc59475995609bf3e9d27eb36f4acf26f (git) Affected: 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 , < 1e262db7675e27f42c3f3f47d6011855f4454f24 (git) Affected: 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 , < 21d70744e6d3bbf9293aa1ee6fba7c53ad75275e (git) Affected: 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 , < 3abc8983b2bae3f487f77d9da5527d7d6b210d46 (git) Affected: 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 , < 14ef6fd18db2494098b21e0471bf27a1d8e9993e (git) Affected: 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 , < 0f5c185fc79a59ee9991234dd6d2a3e5afa6e75b (git) Affected: 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 , < 44b550d88b267320459d518c0743a241ab2108fa (git)
Linux	Linux	Affected: 4.17 Unaffected: 0 , < 4.17 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.88 , ≤ 6.12.* (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-43502",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-14T00:00:00+00:00",
                "version": "2.0.3"
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              {
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                "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                "lang": "en",
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            "tags": [
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            "url": "https://github.com/NebuSec/CyberMeowfia/tree/main/security-research/Linux-CVE-2026-43502-openSUSE-6.4.0-150600"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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              "versionType": "semver"
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            },
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              "status": "unaffected",
              "version": "6.12.88",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.30",
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              "lessThanOrEqual": "7.0.*",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "versionStartIncluding": "4.17",
                  "vulnerable": true
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                  "vulnerable": true
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                {
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                },
                {
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.7",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: handle zerocopy send cleanup before the message is queued\n\nA zerocopy send can fail after user pages have been pinned but before\nthe message is attached to the sending socket.\n\nThe purge path currently infers zerocopy state from rm-\u003em_rs, so an\nunqueued message can be cleaned up as if it owned normal payload pages.\nHowever, zerocopy ownership is really determined by the presence of\nop_mmp_znotifier, regardless of whether the message has reached the\nsocket queue.\n\nCapture op_mmp_znotifier up front in rds_message_purge() and use it as\nthe cleanup discriminator. If the message is already associated with a\nsocket, keep the existing completion path. Otherwise, drop the pinned\npage accounting directly and release the notifier before putting the\npayload pages.\n\nThis keeps early send failure cleanup consistent with the zerocopy\nlifetime rules without changing the normal queued completion path."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is triggered by a local sendmsg(MSG_ZEROCOPY) syscall on an AF_RDS socket; the buggy cleanup decision depends only on local send-side failure conditions, not on any data received from a remote peer.\nAC:L - The attacker fully and deterministically controls the pre-queue failure (e.g., nonblocking socket with a full send buffer, or an invalid RDMA/atomic cmsg), so no race or uncontrolled condition is involved.\nPR:L - Creating an AF_RDS SOCK_SEQPACKET socket and enabling SO_ZEROCOPY require no capabilities (rds_create has no privilege check), so any unprivileged local user can reach the code.\nUI:N - The attacker triggers the entire flow through its own syscall; no action by another user is required.\nS:U - The memory corruption stays within the kernel\u0027s own security authority and does not cross into another security scope such as a VM or IOMMU boundary.\nC:H - Releasing GUP-pinned user pages through the wrong path (and underflowing compound-page refcounts) can free/reuse pages still owned by user space, enabling disclosure of memory contents after reuse.\nI:H - The struct-page refcount underflow and improper page free constitute memory corruption that can be leveraged into a page use-after-free/write primitive, not merely a clean crash.\nA:H - The corrupted page accounting/refcounting and improper buddy-allocator free can cause VM_BUG_ON, oops, or kernel panic, in addition to leaking pinned-page accounting and the notifier struct."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:28:25.250Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e9aefdc5c53fe9aed108c14e3d155710a1bb14c9"
        },
        {
          "url": "https://git.kernel.org/stable/c/46662f7dc59475995609bf3e9d27eb36f4acf26f"
        },
        {
          "url": "https://git.kernel.org/stable/c/1e262db7675e27f42c3f3f47d6011855f4454f24"
        },
        {
          "url": "https://git.kernel.org/stable/c/21d70744e6d3bbf9293aa1ee6fba7c53ad75275e"
        },
        {
          "url": "https://git.kernel.org/stable/c/3abc8983b2bae3f487f77d9da5527d7d6b210d46"
        },
        {
          "url": "https://git.kernel.org/stable/c/14ef6fd18db2494098b21e0471bf27a1d8e9993e"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f5c185fc79a59ee9991234dd6d2a3e5afa6e75b"
        },
        {
          "url": "https://git.kernel.org/stable/c/44b550d88b267320459d518c0743a241ab2108fa"
        }
      ],
      "title": "net/rds: handle zerocopy send cleanup before the message is queued",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43502",
    "datePublished": "2026-05-21T12:17:50.444Z",
    "dateReserved": "2026-05-01T14:12:56.014Z",
    "dateUpdated": "2026-09-15T03:56:01.157Z",
    "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.

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:2026-08522 (CVE-2026-43502)

CVE-2026-43502 (GCVE-0-2026-43502)

Tags

Sightings

Nomenclature

Related by attack behaviour