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ALSA-2025:19432 — Moderate: xorg-x11-server-Xwayland security update

Affected: AlmaLinux:8: xorg-x11-server-Xwayland

Xwayland is an X server for running X clients under Wayland.

Security Fix(es):

* xorg: xmayland: Use-after-free in XPresentNotify structure creation (CVE-2025-62229) * xorg: xwayland: Use-after-free in Xkb client resource removal (CVE-2025-62230) * xorg: xmayland: Value overflow in XkbSetCompatMap() (CVE-2025-62231)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2025-15931

BELL-CVE-2025-62231

Affected: Alpaquita:23: xorg-server, Alpaquita:25: xorg-server, Alpaquita:stream: xorg-server

certfr-2025-avi-0966 — De multiples vulnérabilités ont été découvertes dans les produits Microsoft. Elles permettent à un attaquant de provoqu…

certfr-2025-avi-0966

EUVD-2026-291963

fkie_cve-2025-62231

A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.

GHSA-h4r4-6hvf-34r8

msrc_CVE-2025-62231 — Xorg: xmayland: value overflow in xkbsetcompatmap()

msrc_CVE-2025-62231

OESA-2026-1380 — xorg-x11-server security update

Affected: openEuler:24.03-LTS-SP2: xorg-x11-server, openEuler:24.03-LTS-SP3: xorg-x11-server, openEuler:20.03-LTS-SP4: xorg-x11-server, openEuler:22.03-LTS-SP4: xorg-x11-server, openEuler:24.03-LTS: xorg-x11-server, openEuler:24.03-LTS-SP1: xorg-x11-server

X.Org X11 X server Security Fix(es):

In X.Org X server 20.11 through 21.1.16, when a client application uses easystroke for mouse gestures, the main thread modifies various data structures used by the input thread without acquiring a lock, aka a race condition. In particular, AttachDevice in dix/devices.c does not acquire an input lock.(CVE-2022-49737)

A flaw was found in the X Rendering extension's handling of animated cursors. If a client provides no cursors, the server assumes at least one is present, leading to an out-of-bounds read and potential crash.(CVE-2025-49175)

A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check.(CVE-2025-49176)

A flaw was found in the X server's request handling. Non-zero 'bytes to ignore' in a client's request can cause the server to skip processing another client's request, potentially leading to a denial of service.(CVE-2025-49178)

A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.(CVE-2025-49179)

A flaw was found in the RandR extension, where the RRChangeProviderProperty function does not properly validate input. This issue leads to an integer overflow when computing the total size to allocate.(CVE-2…

openSUSE-SU-2025:15683-1 — xorg-x11-server-21.1.15-7.1 on GA media

xorg-x11-server-21.1.15-7.1 on GA media

RHSA-2025:19435 — Red Hat Security Advisory: xorg-x11-server-Xwayland security update

xorg: xmayland: Use-after-free in XPresentNotify structure creation xorg: xwayland: Use-after-free in Xkb client resource removal xorg: xmayland: Value overflow in XkbSetCompatMap()

SUSE-SU-2025:21149-1 — Security update for xwayland

Security update for xwayland

UBUNTU-CVE-2025-62231

Affected: Ubuntu:Pro:14.04:LTS: xorg-server, Ubuntu:Pro:16.04:LTS: xorg-server, Ubuntu:Pro:16.04:LTS: xorg-server-hwe-16.04, Ubuntu:Pro:18.04:LTS: xorg-server, Ubuntu:Pro:18.04:LTS: xorg-server-hwe-18.04, Ubuntu:Pro:20.04:LTS: xorg-server, Ubuntu:22.04:LTS: xorg-server, Ubuntu:22.04:LTS: xwayland, Ubuntu:24.04:LTS: xorg-server, Ubuntu:24.04:LTS: xwayland and 4 more

WID-SEC-W-2025-2436 — Xwayland und X.Org X11: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Xwayland und X.Org X11 ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.