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CVE-2025-26594

nvd nist
Published: Feb 25, 2025Modified: Jun 29, 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 use-after-free flaw was found in X.Org 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.

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-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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.