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High severity7.8NVD Advisory· Published Feb 25, 2025· Updated Apr 6, 2026

CVE-2025-26595

CVE-2025-26595

Description

A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.

Affected products

6
  • Tigervnc/Tigervnc
    cpe:2.3:a:tigervnc:tigervnc:-:*:*:*:*:*:*:*
  • Xorg/Xserver
    cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*
    Range: <21.1.16
  • Xorg/Xwayland
    cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*
    Range: <24.1.6
  • Red Hat/Enterprise Linux3 versions
    cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
    • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
    • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

18

News mentions

0

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