CVE-2026-34001

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-34001
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.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://access.redhat.com/errata/RHSA-2026:10739
https://access.redhat.com/errata/RHSA-2026:11352
https://access.redhat.com/errata/RHSA-2026:11369
https://access.redhat.com/errata/RHSA-2026:11388
https://access.redhat.com/errata/RHSA-2026:11656
https://access.redhat.com/errata/RHSA-2026:11692
https://access.redhat.com/errata/RHSA-2026:13414
https://access.redhat.com/errata/RHSA-2026:19125
https://access.redhat.com/errata/RHSA-2026:19342
https://access.redhat.com/errata/RHSA-2026:19343
https://access.redhat.com/errata/RHSA-2026:19344
https://access.redhat.com/errata/RHSA-2026:20547
https://access.redhat.com/errata/RHSA-2026:20555
https://access.redhat.com/errata/RHSA-2026:20557
https://access.redhat.com/errata/RHSA-2026:20558
https://access.redhat.com/errata/RHSA-2026:20560
https://access.redhat.com/errata/RHSA-2026:20561
https://access.redhat.com/errata/RHSA-2026:20562
https://access.redhat.com/errata/RHSA-2026:20563
https://access.redhat.com/errata/RHSA-2026:20575
https://access.redhat.com/errata/RHSA-2026:20576
https://access.redhat.com/errata/RHSA-2026:20590
https://access.redhat.com/errata/RHSA-2026:21699
https://access.redhat.com/errata/RHSA-2026:21712
https://access.redhat.com/errata/RHSA-2026:21715
https://access.redhat.com/errata/RHSA-2026:21716
https://access.redhat.com/errata/RHSA-2026:21718
https://access.redhat.com/errata/RHSA-2026:21741
https://access.redhat.com/errata/RHSA-2026:21742
https://access.redhat.com/errata/RHSA-2026:22424
https://access.redhat.com/errata/RHSA-2026:22456
https://access.redhat.com/errata/RHSA-2026:23254
https://access.redhat.com/errata/RHSA-2026:23255
https://access.redhat.com/errata/RHSA-2026:23496
https://access.redhat.com/security/cve/CVE-2026-34001
https://bugzilla.redhat.com/show_bug.cgi?id=2451109
Configurations

No configuration.

History

05 Jun 2026, 02:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:23496 -

04 Jun 2026, 18:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:23255 -

04 Jun 2026, 12:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:23254 -

02 Jun 2026, 23:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:22456 -

02 Jun 2026, 10:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:22424 -

28 May 2026, 16:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:21715 -
  • () https://access.redhat.com/errata/RHSA-2026:21741 -
  • () https://access.redhat.com/errata/RHSA-2026:21742 -

28 May 2026, 10:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:21712 -
  • () https://access.redhat.com/errata/RHSA-2026:21716 -
  • () https://access.redhat.com/errata/RHSA-2026:21718 -

28 May 2026, 09:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:21699 -

26 May 2026, 09:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:20547 -
  • () https://access.redhat.com/errata/RHSA-2026:20555 -
  • () https://access.redhat.com/errata/RHSA-2026:20557 -
  • () https://access.redhat.com/errata/RHSA-2026:20558 -
  • () https://access.redhat.com/errata/RHSA-2026:20560 -
  • () https://access.redhat.com/errata/RHSA-2026:20561 -
  • () https://access.redhat.com/errata/RHSA-2026:20562 -
  • () https://access.redhat.com/errata/RHSA-2026:20563 -
  • () https://access.redhat.com/errata/RHSA-2026:20575 -
  • () https://access.redhat.com/errata/RHSA-2026:20576 -
  • () https://access.redhat.com/errata/RHSA-2026:20590 -

20 May 2026, 04:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:19342 -
  • () https://access.redhat.com/errata/RHSA-2026:19344 -

19 May 2026, 22:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:19125 -
  • () https://access.redhat.com/errata/RHSA-2026:19343 -

04 May 2026, 13:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:13414 -

29 Apr 2026, 19:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:11656 -
  • () https://access.redhat.com/errata/RHSA-2026:11692 -

28 Apr 2026, 22:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:11388 -

28 Apr 2026, 15:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:11369 -

28 Apr 2026, 13:19

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:11352 -

27 Apr 2026, 10:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:10739 -

23 Apr 2026, 16:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-23 16:16

Updated : 2026-06-05 02:17

NVD link : CVE-2026-34001

Mitre link : CVE-2026-34001

CVE.ORG link : CVE-2026-34001

JSON object : View

Products Affected

No product.

CWE
CWE-825

Expired Pointer Dereference