Vulnerability Details CVE-2025-26594
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.1%
CVSS Severity
CVSS v3 Score 7.8
References
- https://access.redhat.com/errata/RHSA-2025:2500
- https://access.redhat.com/errata/RHSA-2025:2502
- https://access.redhat.com/errata/RHSA-2025:2861
- https://access.redhat.com/errata/RHSA-2025:2862
- https://access.redhat.com/errata/RHSA-2025:2865
- https://access.redhat.com/errata/RHSA-2025:2866
- https://access.redhat.com/errata/RHSA-2025:2873
- https://access.redhat.com/errata/RHSA-2025:2874
- https://access.redhat.com/errata/RHSA-2025:2875
- https://access.redhat.com/errata/RHSA-2025:2879
- https://access.redhat.com/errata/RHSA-2025:2880
- https://access.redhat.com/security/cve/CVE-2025-26594
- https://bugzilla.redhat.com/show_bug.cgi?id=2345248
Products affected by CVE-2025-26594
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cpe:2.3:a:tigervnc:tigervnc:-
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cpe:2.3:a:x.org:x_server:-
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cpe:2.3:a:x.org:xwayland:-
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cpe:2.3:o:redhat:enterprise_linux:7.0
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:redhat:enterprise_linux:9.0