CVE-2025-26601 describes a use-after-free vulnerability in X.Org and Xwayland, also affecting Red Hat and TigerVNC products. This flaw occurs during alarm changes, where an early return due to an error can prevent proper sync object addition, leading to a use-after-free when the alarm triggers. Rated 7.8 HIGH (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), it allows for high impact on confidentiality, integrity, and availability with low attack complexity and privileges. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:tigervnc:tigervnc:-:*:*:*:*:*:*:* | ||
< 21.1.16CPE matchmatch criteria | cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* | ||
< 24.1.6CPE matchmatch criteria | cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
HP ThinPro 8.1 SP7 Security Updates
Jun 3, 2025HP ThinPro 8.1 SP7 Security Updates
Jun 3, 2025xorg: xwayland: Use-after-free in SyncInitTrigger()
Feb 25, 2025Xorg: xwayland: use-after-free in syncinittrigger()
Feb 11, 2025