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CVE-2025-26596

nvd nist
Published: Feb 25, 2025Modified: Apr 6, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

Description

A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms() differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow.

Affected (6)

Tigervnc
1 product
Tigervnc
X.org
2 products
X Server
Xwayland
Redhat
1 product
Enterprise Linux
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Tigervnc
All versions
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
X Server
Before 21.1.16
Xwayland
Before 24.1.6
Configuration C
3 vulnerable
Vulnerable SoftwareAffected Versions
Redhat
Enterprise Linux
Version 7.0
Enterprise Linux
Version 8.0
Enterprise Linux
Version 9.0

Related CWEs

CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.

References (18)

Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Issue Tracking
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.