CVE-2025-26596

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2345256

https://access.redhat.com/security/cve/CVE-2025-26596

https://access.redhat.com/errata/RHSA-2025:2880

https://access.redhat.com/errata/RHSA-2025:2879

https://access.redhat.com/errata/RHSA-2025:2875

https://access.redhat.com/errata/RHSA-2025:2874

https://access.redhat.com/errata/RHSA-2025:2873

https://access.redhat.com/errata/RHSA-2025:2866

https://access.redhat.com/errata/RHSA-2025:2865

https://access.redhat.com/errata/RHSA-2025:2862

https://access.redhat.com/errata/RHSA-2025:2861

https://access.redhat.com/errata/RHSA-2025:2502

https://access.redhat.com/errata/RHSA-2025:2500

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3