vulnerability
Ubuntu: (Multiple Advisories) (CVE-2025-26599): X.Org X Server vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Feb 25, 2025 | Feb 26, 2025 | Aug 18, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Feb 25, 2025
Added
Feb 26, 2025
Modified
Aug 18, 2025
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.
Solutions
ubuntu-pro-upgrade-xserver-xorg-coreubuntu-pro-upgrade-xserver-xorg-core-hwe-16-04ubuntu-pro-upgrade-xserver-xorg-core-hwe-18-04ubuntu-pro-upgrade-xwaylandubuntu-pro-upgrade-xwayland-hwe-16-04ubuntu-pro-upgrade-xwayland-hwe-18-04
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