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CVE-2026-50261

Опубликовано: 09 июн. 2026
Источник: msrc
CVSS3: 7.8
EPSS Низкий

Описание

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()

EPSS

Процентиль: 5%
0.00154
Низкий

7.8 High

CVSS3

Связанные уязвимости

CVSS3: 7.8
ubuntu
около 2 месяцев назад

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVSS3: 7.8
redhat
2 месяца назад

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVSS3: 7.8
nvd
около 2 месяцев назад

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVSS3: 7.8
debian
около 2 месяцев назад

A use-after-free flaw was found in the X.Org X server and Xwayland in ...

CVSS3: 7.8
github
около 2 месяцев назад

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root.

EPSS

Процентиль: 5%
0.00154
Низкий

7.8 High

CVSS3