Description
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.
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; fedoraproject: fedora; debian: debian linux
References10
- lists.x.org/archives/xorg-announce/2023-October/003430.html PatchVendor Advisory
- lists.x.org/archives/xorg-announce/2023-October/003430.html PatchVendor Advisory
- access.redhat.com/errata/RHSA-2023:6802 Third Party Advisory
- access.redhat.com/errata/RHSA-2023:6808 Third Party Advisory
- access.redhat.com/errata/RHSA-2023:7373 Third Party Advisory
- access.redhat.com/errata/RHSA-2023:7388 Third Party Advisory
- access.redhat.com/errata/RHSA-2023:7405 Third Party Advisory
- access.redhat.com/errata/RHSA-2023:7428 Third Party Advisory
- access.redhat.com/errata/RHSA-2023:7436 Third Party Advisory
- access.redhat.com/errata/RHSA-2023:7526 Third Party Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 49 · as of 5 November 2026
- CWE
- CWE-787
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