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medium6.1

CVE-2026-34000

A flaw was found in the X.Org X server.

Impact

A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server, either locally or remotely, can exploit this without user interaction. This could lead to the disclosure of memory contents or cause a denial of service by crashing the server.

Affected products

VendorProductAffected versions
X.OrgX Server
All versions
RedhatEnterprise Linux
Versions 6.0, 7.0, 8.0, 9.0, 10.0

Weakness classification

CWE-125

References