CVE-2026-34001 - Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption

CVE-2026-34001 - Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption

https://cvefeed.io/rssfeed/latest.atom / Thu, 04/23/2026 - 20:20
CVE ID :CVE-2026-34001
Published : April 23, 2026, 4:16 p.m. | 1 hour, 56 minutes ago
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.
Severity: 7.8 | HIGH
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