🛡️ CVE-2026-34001
🟠 CVSS 7.8 — High ✅ No Known Exploit CWE-825 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system.

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-825
Public Exploit ✅ No
Source NVD
Published 2026-04-23
Updated 2026-06-09
Modified 2026-06-08
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown

References

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