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CVE-2026-80586

Опубликовано: 26 авг. 2026
Источник: redhat
CVSS3: 7
EPSS Низкий

Описание

In the Linux kernel, the following vulnerability has been resolved: mptcp: options: reset DSS fields in case of unexpected size A remote peer could send a malformed DSS with a wrong size, followed by another DSS or MPC + Data. In this case, the first suboption will be ignored, but leaving some fields written, which could lead to inconsistency or access uninitialized data. Explicitly reset the fields that could have been modified in case of unexpected size.

A flaw was found in the Linux kernel. A remote attacker could send a malformed Data Sequence Signal (DSS) with an incorrect size. This could lead to inconsistencies or access to uninitialized data within the kernel.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 10kernelAffected
Red Hat Enterprise Linux 6kernelNot affected
Red Hat Enterprise Linux 7kernelNot affected
Red Hat Enterprise Linux 7kernel-rtNot affected
Red Hat Enterprise Linux 8kernelAffected
Red Hat Enterprise Linux 8kernel-rtAffected
Red Hat Enterprise Linux 9kernelAffected
Red Hat Enterprise Linux 9kernel-rtAffected

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Дополнительная информация

Статус:

Important
Дефект:
CWE-824
https://bugzilla.redhat.com/show_bug.cgi?id=2524438kernel: mptcp: options: reset DSS fields in case of unexpected size

EPSS

Процентиль: 34%
0.00404
Низкий

7 High

CVSS3

Связанные уязвимости

CVSS3: 9.8
ubuntu
15 дней назад

In the Linux kernel, the following vulnerability has been resolved: mptcp: options: reset DSS fields in case of unexpected size A remote peer could send a malformed DSS with a wrong size, followed by another DSS or MPC + Data. In this case, the first suboption will be ignored, but leaving some fields written, which could lead to inconsistency or access uninitialized data. Explicitly reset the fields that could have been modified in case of unexpected size.

CVSS3: 9.8
nvd
15 дней назад

In the Linux kernel, the following vulnerability has been resolved: mptcp: options: reset DSS fields in case of unexpected size A remote peer could send a malformed DSS with a wrong size, followed by another DSS or MPC + Data. In this case, the first suboption will be ignored, but leaving some fields written, which could lead to inconsistency or access uninitialized data. Explicitly reset the fields that could have been modified in case of unexpected size.

msrc
15 дней назад

mptcp: options: reset DSS fields in case of unexpected size

CVSS3: 9.8
debian
15 дней назад

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

CVSS3: 9.8
github
15 дней назад

In the Linux kernel, the following vulnerability has been resolved: mptcp: options: reset DSS fields in case of unexpected size A remote peer could send a malformed DSS with a wrong size, followed by another DSS or MPC + Data. In this case, the first suboption will be ignored, but leaving some fields written, which could lead to inconsistency or access uninitialized data. Explicitly reset the fields that could have been modified in case of unexpected size.

EPSS

Процентиль: 34%
0.00404
Низкий

7 High

CVSS3