CVE-2025-26596

high

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

Advisories
More

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

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

Details

Source: Mitre, NVD

Published: 2025-02-25

Updated: 2025-04-10

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00023

Detections

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