Description
Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent() pointing into potentially reallocated memory.
Published: 2026-07-08
Score: 9 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Wed, 08 Jul 2026 08:30:00 +0000

Type Values Removed Values Added
Description Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent() pointing into potentially reallocated memory.
Title xorg-x11-server / xwayland GLX contextTags Use-After-Free in CommonMakeCurrent()
Weaknesses CWE-416
References
Metrics cvssV4_0

{'score': 9, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

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cve-icon MITRE

Status: PUBLISHED

Assigner: suse

Published:

Updated: 2026-07-08T08:12:50.380Z

Reserved: 2026-06-18T09:26:55.988Z

Link: CVE-2026-56000

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses