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Buffer Access with Incorrect Length Value The advisory has been revoked - it doesn't affect any version of package xorg-x11-server-common  (opens in a new tab)

Threat Intelligence

EPSS
0.49% (42nd percentile)

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  • Snyk IDSNYK-RHEL7-XORGX11SERVERCOMMON-16434830
  • published6 May 2026
  • disclosed5 May 2026
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Introduced: 5 May 2026

CVE-2026-34002  (opens in a new tab)
CWE-805  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:7.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-x11-server-common package and not the xorg-x11-server-common package as distributed by RHEL.

A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service.

References