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// CVE · PUBLISHED 2026-05-05

CVE-2026-34002

Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat / Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION · Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support · +16

9.1 · CVSS 3.1Critical

Description

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

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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.