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CVE-2025-26599

Public on 2025-02-25
Modified on 2025-02-28
Description

An access to an uninitialized pointer flaw was found in X.Org and Xwayland. The function compCheckRedirect() may fail if it cannot allocate the backing pixmap. In that case, compRedirectWindow() will return a BadAlloc error without validating the window tree marked just before, which leaves the validated data partly initialized and the use of an uninitialized pointer later.

Severity
Medium
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CVSS v3 Base Score
4.5
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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 4.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
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-2025-26599 Mitre: CVE-2025-26599 FAQs regarding Amazon Linux ALAS/CVE Severity