CVE-2026-34001 — A flaw was found in the X.Org X server. This use-after-free vulnerability occur…
Severity: High · Kind: Vulnerability
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From the source
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.
Vulnerability facts
- CVE
- CVE-2026-34001
- CVSS
- 7.8
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