CVE-2025-26599

Published: Feb 25, 2025

Modified: Apr 6, 2026

PUBLISHED

CVSS v3.1

7.8

HIGH

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.

Vendor	Product	Versions
Unknown	xserver	affected `0 - < 21.1.16` affected `22.0.0 - < 24.1.6`
Red Hat	Red Hat Enterprise Linux 10	unaffected `0:24.1.5-3.el10_0 - < *`
Red Hat	Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION	unaffected `0:1.1.0-25.el6_10 - < *`
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	unaffected `0:1.8.0-36.el7_9 - < *`
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	unaffected `0:1.20.4-30.el7_9 - < *`
Red Hat	Red Hat Enterprise Linux 8	unaffected `0:1.13.1-15.el8_10 - < *`
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support	unaffected `0:1.9.0-15.el8_2.13 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	unaffected `0:1.11.0-8.el8_4.12 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Telecommunications Update Service	unaffected `0:1.11.0-8.el8_4.12 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions	unaffected `0:1.11.0-8.el8_4.12 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	unaffected `0:1.12.0-6.el8_6.13 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service	unaffected `0:1.12.0-6.el8_6.13 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions	unaffected `0:1.12.0-6.el8_6.13 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	unaffected `0:1.12.0-15.el8_8.12 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:1.14.1-1.el9_5.1 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:1.20.11-28.el9_6 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:23.2.7-3.el9_6 - < *`
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	unaffected `0:1.11.0-22.el9_0.13 - < *`
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	unaffected `0:1.12.0-14.el9_2.10 - < *`
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	unaffected `0:1.13.1-8.el9_4.5 - < *`
Red Hat	Red Hat Enterprise Linux 6	All versions
Red Hat	Red Hat Enterprise Linux 8	All versions
Red Hat	Red Hat Enterprise Linux 8	All versions