A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service.
CVE-2023-5367
CVSS base score
7.8 (v3.1)
Severity
HIGH
Attack vector
Local
Weakness
CWE-787
Last modified
November 4, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
x.org x server
x.org xwayland
redhat enterprise linux
redhat enterprise linux desktop
redhat enterprise linux for ibm z systems
redhat enterprise linux for power big endian
redhat enterprise linux for power little endian
redhat enterprise linux for scientific computing
redhat enterprise linux server
redhat enterprise linux workstation
References
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory
- access.redhat.com Third Party Advisory