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CVE-2026-64380

Опубликовано: 25 июл. 2026
Источник: nvd
CVSS3: 8.2
EPSS Низкий

Описание

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

smb: client: harden POSIX SID length parsing

posix_info_sid_size() reads sid[1] to obtain the subauthority count, but its existing boundary check still accepts buffers with only one remaining byte. Require two bytes before reading sid[1] so all client paths that reuse the helper reject truncated POSIX SIDs safely.

Уязвимые конфигурации

Конфигурация 1

Одно из

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Версия от 5.7 (включая) до 5.10.261 (исключая)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Версия от 5.11 (включая) до 5.15.212 (исключая)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Версия от 5.16 (включая) до 6.1.178 (исключая)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Версия от 6.2 (включая) до 6.6.145 (исключая)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Версия от 6.7 (включая) до 6.12.96 (исключая)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Версия от 6.13 (включая) до 6.18.39 (исключая)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Версия от 6.19 (включая) до 7.1.4 (исключая)
cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*

EPSS

Процентиль: 37%
0.00443
Низкий

8.2 High

CVSS3

Дефекты

NVD-CWE-noinfo
CWE-125

Связанные уязвимости

CVSS3: 8.2
ubuntu
3 месяца назад

In the Linux kernel, the following vulnerability has been resolved: smb: client: harden POSIX SID length parsing posix_info_sid_size() reads sid[1] to obtain the subauthority count, but its existing boundary check still accepts buffers with only one remaining byte. Require two bytes before reading sid[1] so all client paths that reuse the helper reject truncated POSIX SIDs safely.

CVSS3: 7
redhat
3 месяца назад

In the Linux kernel, the following vulnerability has been resolved: smb: client: harden POSIX SID length parsing posix_info_sid_size() reads sid[1] to obtain the subauthority count, but its existing boundary check still accepts buffers with only one remaining byte. Require two bytes before reading sid[1] so all client paths that reuse the helper reject truncated POSIX SIDs safely.

CVSS3: 8.2
msrc
3 месяца назад

smb: client: harden POSIX SID length parsing

CVSS3: 8.2
debian
3 месяца назад

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

CVSS3: 8.2
redos
19 дней назад

Уязвимость kernel-lt

EPSS

Процентиль: 37%
0.00443
Низкий

8.2 High

CVSS3

Дефекты

NVD-CWE-noinfo
CWE-125
Уязвимость CVE-2026-64380