CVE-2025-26594

CWE-416 — Use After FreeCWE-125 — Out-of-bounds Read12 documents9 sources
Severity
7.8HIGH
EPSS
0.0%
top 94.24%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
X.org X ServerX.org XwaylandRedhat Enterprise Linux
Timeline
PublishedFeb 25
Latest updateMar 17

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDx.org/x_server< 21.1.16
▶NVDx.org/xwayland< 24.1.6
▶Debianxwayland< 2:24.1.6-1+1
▶Debianxorg-server< 2:1.20.11-1+deb11u15+3

Also affects: Enterprise Linux 7.0, 8.0, 9.0

🔴Vulnerability Details

3
GHSA
GHSA-gc32-fmf5-c742: A use-after-free flaw was found in X↗2025-02-25
▶
OSV
CVE-2025-26594: A use-after-free flaw was found in X↗2025-02-25
▶
CVEList
X.org: xwayland: use-after-free of the root cursor↗2025-02-25
▶

📋Vendor Advisories

8
Ubuntu
X.Org X Server regression↗2025-03-17
▶
Ubuntu
X.Org X Server vulnerabilities↗2025-03-10
▶
Red Hat
X.Org: Xwayland: Use-after-free of the root cursor↗2025-02-25
▶
BSD
OpenBSD 7.5 Errata 018: SECURITY FIX↗2025-02-25
▶
Ubuntu
X.Org X Server vulnerabilities↗2025-02-25
▶