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CVE-2025-26594

Public on 2025-02-25
Modified on 2025-02-27
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.

Severity
Important
See what this means
CVSS v3 Base Score
7.8
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core xorg-x11-server 2025-03-08 23:17 ALAS2-2025-2791
Amazon Linux 2023 xorg-x11-server 2025-03-06 23:13 ALAS2023-2025-892
Amazon Linux 2023 xorg-x11-server-Xwayland 2025-03-06 23:13 ALAS2023-2025-891
Amazon Linux 2023 xorg-x11-server-Xwayland 2025-03-13 04:48 ALAS2023-2025-895

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Red Hat: CVE-2025-26594 Mitre: CVE-2025-26594 FAQs regarding Amazon Linux ALAS/CVE Severity