Fiche vulnérabilité
CVE-2026-34002 : faille critique x.org x server (CVSS 9.1)
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.
En bref
- Sévérité
- Critique (CVSS 9.1)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 5 mai 2026
- Dernière mise à jour
- 17 juin 2026
Produits concernés
- x.org x server
- redhat enterprise linux
Références
- Fiche CVE-2026-34002 sur le NVD (NIST)
- access.redhat.com/errata/RHSA-2026:20547
- access.redhat.com/errata/RHSA-2026:20555
- access.redhat.com/errata/RHSA-2026:20557
- access.redhat.com/errata/RHSA-2026:20558
- access.redhat.com/errata/RHSA-2026:20560
- access.redhat.com/errata/RHSA-2026:20561
- access.redhat.com/errata/RHSA-2026:20562
- access.redhat.com/errata/RHSA-2026:20563
- access.redhat.com/errata/RHSA-2026:20575
- access.redhat.com/errata/RHSA-2026:20576
- access.redhat.com/errata/RHSA-2026:20590
- access.redhat.com/errata/RHSA-2026:21699
- access.redhat.com/errata/RHSA-2026:21712
- access.redhat.com/errata/RHSA-2026:21715
- access.redhat.com/errata/RHSA-2026:21716