9.1

CVE-2026-34002

Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
X.Org ≫ X Server Version -
Redhat ≫ Enterprise Linux Version 6.0
Redhat ≫ Enterprise Linux Version 7.0
Redhat ≫ Enterprise Linux Version 8.0
Redhat ≫ Enterprise Linux Version 9.0
Redhat ≫ Enterprise Linux Version 10.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.49% 0.382
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 9.1 3.9 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
RedHat 6.1 1.8 4.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
CWE-805 Buffer Access with Incorrect Length Value

The product uses a sequential operation to read or write a buffer, but it uses an incorrect length value that causes it to access memory that is outside of the bounds of the buffer.

https://access.redhat.com/security/cve/CVE-2026-34002
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2451112
Third Party Advisory
Issue Tracking
https://access.redhat.com/errata/RHSA-2026:20547
https://access.redhat.com/errata/RHSA-2026:20555
https://access.redhat.com/errata/RHSA-2026:20557
https://access.redhat.com/errata/RHSA-2026:20558
https://access.redhat.com/errata/RHSA-2026:20560
https://access.redhat.com/errata/RHSA-2026:20561
https://access.redhat.com/errata/RHSA-2026:20562
https://access.redhat.com/errata/RHSA-2026:20563
https://access.redhat.com/errata/RHSA-2026:20575
https://access.redhat.com/errata/RHSA-2026:20576
https://access.redhat.com/errata/RHSA-2026:20590
https://access.redhat.com/errata/RHSA-2026:21699
https://access.redhat.com/errata/RHSA-2026:21712
https://access.redhat.com/errata/RHSA-2026:21716
https://access.redhat.com/errata/RHSA-2026:21718
https://access.redhat.com/errata/RHSA-2026:21715
https://access.redhat.com/errata/RHSA-2026:21741
https://access.redhat.com/errata/RHSA-2026:21742
https://access.redhat.com/errata/RHSA-2026:22424
https://access.redhat.com/errata/RHSA-2026:22456
https://access.redhat.com/errata/RHSA-2026:23254
https://access.redhat.com/errata/RHSA-2026:23255
https://access.redhat.com/errata/RHSA-2026:23496
https://access.redhat.com/errata/RHSA-2026:24341