VDB
CVE-2026-34001
CVE-2026-34001
PUBLISHED
CVSS 7.800000190734863 HIGH
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.
EPSS 0.00% · 0.3th percentile
Risk Scores
CVSS v3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.00%
0.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | |
| Red Hat | Red Hat Enterprise Linux 6 | |
| Red Hat | Red Hat Enterprise Linux 7 | |
| Red Hat | Red Hat Enterprise Linux 9 | |
| Red Hat | Red Hat Enterprise Linux 8 | |
| Red Hat | Red Hat Enterprise Linux 7 | |
| Red Hat | Red Hat Enterprise Linux 9 | |
| Red Hat | Red Hat Enterprise Linux 6 | |
| Red Hat | Red Hat Enterprise Linux 10 | |
| Red Hat | Red Hat Enterprise Linux 9 | |
| Red Hat | Red Hat Enterprise Linux 8 |
Timeline
- Apr 14, 2026 CVE Published
- Apr 15, 2026 PoC Published
- Apr 15, 2026 PoC Published
- Apr 19, 2026 PoC Published
- Apr 22, 2026 PoC Published
- Apr 23, 2026 PoC Published
- Apr 24, 2026 Security Advisory
- Apr 27, 2026 Distribution Patch
- Apr 27, 2026 Security Advisory
- Apr 28, 2026 Distribution Patch
- Apr 28, 2026 Security Advisory
- Apr 28, 2026 Distribution Patch