Bug 2538514 (CVE-2026-88806) - CVE-2026-88806 libX11: libX11: Heap-based buffer overflow via malicious X server
Summary: CVE-2026-88806 libX11: libX11: Heap-based buffer overflow via malicious X server
Keywords:
Status: NEW
Alias: CVE-2026-88806
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2539102
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-22 18:55 UTC by OSIDB Bzimport
Modified: 2026-09-23 07:35 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-09-22 18:55:17 UTC 
A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.
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