DeutschShown in its original language — a full translation is planned for a future version.
X.Org X11 und Xwayland: Mehrere Schwachstellen ermöglichen Codeausführung und DoS
view advisory published 2026-07-07
Ein Angreifer kann mehrere Schwachstellen in X.Org X11 und Xwayland ausnutzen, um einen Denial of Service zu verursachen oder potentiell beliebigen Programmcode auszuführen.
01
describes (2)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-56000US | high7.8 | — | ||
Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to Comm… | ||||
| CVE-2026-55999US | high7.8 | — | ||
Local attackers with a X connection able to provide PCX fonts to the X
server xorg-server before 21.2.24 and xwayland before 24.1.13 could
cause a heap buffer overflow via SetFon… | ||||
02
references
External citations — patches, advisories, analysis.
- Oracle Linux Security Advisory ELSA-2026-38487 vom 2026-09-02external
- Oracle Linux Security Advisory ELSA-2026-38489 vom 2026-09-02external
- Red Hat Security Advisory RHSA-2026:38488 vom 2026-07-13external
- Red Hat Security Advisory RHSA-2026:38489 vom 2026-07-13external
- Red Hat Security Advisory RHSA-2026:38490 vom 2026-07-13external
- Red Hat Security Advisory RHSA-2026:49516 vom 2026-08-03external
- Red Hat Security Advisory RHSA-2026:49605 vom 2026-08-03external
- Red Hat Security Advisory RHSA-2026:49606 vom 2026-08-03external
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