xwayland: xorg: X.Org X server: Information disclosure and denial of service via out-of-bounds read in XKB geometry processing.

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,...

CLSA-2026-1779581754 tigervnc: Fix of CVE-2026-34000

CVE-2026-34000: widen bounds check in CheckSetGeom to cover both key alias names 2 XkbKeyNameLength and prevent out-of-bounds read of uninitialized memory in XkbAddGeomKeyAlias...

Rocky Linux: CVE-2026-34000: tigervnc (RLSA-2026-19342)

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,...