Описание
A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one of the changes triggers an error, the function will return early, not adding the new sync object, possibly causing a use-after-free when the alarm eventually triggers.
Отчет
Xorg server does not run with root privileges in Red Hat Enterprise Linux 8 and 9, therefore, Red Hat Enterprise Linux 8 and 9 have been rated with a Moderate severity and are not affected by this bug.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | tigervnc | Affected | ||
| Red Hat Enterprise Linux 6 | xorg-x11-server | Out of support scope | ||
| Red Hat Enterprise Linux 8 | xorg-x11-server | Not affected | ||
| Red Hat Enterprise Linux 8 | xorg-x11-server-Xwayland | Not affected | ||
| Red Hat Enterprise Linux 10 | xorg-x11-server-Xwayland | Fixed | RHSA-2025:7458 | 13.05.2025 |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | tigervnc | Fixed | RHSA-2025:2861 | 17.03.2025 |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | xorg-x11-server | Fixed | RHSA-2025:2879 | 17.03.2025 |
| Red Hat Enterprise Linux 8 | tigervnc | Fixed | RHSA-2025:2502 | 10.03.2025 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | tigervnc | Fixed | RHSA-2025:2866 | 17.03.2025 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | tigervnc | Fixed | RHSA-2025:2865 | 17.03.2025 |
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Дополнительная информация
Статус:
EPSS
7.8 High
CVSS3
Связанные уязвимости
A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one of the changes triggers an error, the function will return early, not adding the new sync object, possibly causing a use-after-free when the alarm eventually triggers.
A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one of the changes triggers an error, the function will return early, not adding the new sync object, possibly causing a use-after-free when the alarm eventually triggers.
A use-after-free flaw was found in X.Org and Xwayland. When changing a ...
A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one of the changes triggers an error, the function will return early, not adding the new sync object, possibly causing a use-after-free when the alarm eventually triggers.
EPSS
7.8 High
CVSS3