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CVE-2025-26597

7.8 HIGH

A buffer overflow flaw was found in X.Org and Xwayland

Published: 2025-02-25 · Last updated: 2026-06-02

Severity and scoring

CVSS
7.8 HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-119

Affected products

VendorProduct
redhatenterprise_linux, tigervnc, x_server
tigervncenterprise_linux, tigervnc, x_server
x.orgenterprise_linux, tigervnc, x_server

Description

A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a 0 group, it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is later called with a non-zero value of groups, this will cause a buffer overflow because the key actions are of the wrong size.

Source: NVD

References

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