880
VMScore

CVE-2025-26597

CVSSv4: NA | CVSSv3: 7.8 | CVSSv2: NA | VMScore: 880 | EPSS: 0.00029 | KEV: Not Included
Published: 25/02/2025 Updated: 13/05/2025

Vulnerability Summary

X.Org and Xwayland Buffer Overflow Vulnerability in XkbChangeTypesOfKey Function

A buffer overflow vulnerability exists in X.Org and Xwayland involving the XkbChangeTypesOfKey() function. When this function is initially called with a 0 group, it resizes the key symbols table to 0 but does not modify the key actions. If the same function is subsequently invoked with a non-zero groups value, it results in a buffer overflow because the key actions remain at an incorrect size. This could potentially allow an attacker to cause system instability or execute malicious code by manipulating the key symbols and actions.

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tigervnc tigervnc -

x.org x server

x.org xwayland

redhat enterprise linux 7.0

redhat enterprise linux 8.0

redhat enterprise linux 9.0

Vendor Advisories

Debian Bug report logs - #1098906 xorg-server: CVE-2025-26594 CVE-2025-26595 CVE-2025-26596 CVE-2025-26597 CVE-2025-26598 CVE-2025-26599 CVE-2025-26600 CVE-2025-26601 Package: src:xorg-server; Maintainer for src:xorg-server is Debian X Strike Force <debian-x@listsdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debi ...
A use-after-free flaw was found in XOrg and Xwayland The root cursor is referenced in the X server as a global variable If a client frees the root cursor, the internal reference points to freed memory and causes a use-after-free (CVE-2025-26594) A buffer overflow flaw was found in XOrg and Xwayland The code in XkbVModMaskText() allocates a fi ...

Mailing Lists

---------- Forwarded message --------- From: Olivier Fourdan <ofourdan () redhat com> Date: Tue, Feb 25, 2025 at 4:39 PM Subject: XOrg Security Advisory: multiple security issues XOrg X server and Xwayland To: <xorg-announce () lists x org> Cc: <xorg () lists x org>, xorg-devel <xorg-devel () lists x org> ============= ...