CVE-2023-5367

HighCVSS 7.8

Published: 25/10/2023(UTC)Updated: 23/06/2026(UTC)Translated: 24/06/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.62%

45th percentile - higher than 45% of all known CVEs

Summary

An 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, potentially allowing for privilege escalation or denial of service.

Risk Assessment

This vulnerability may allow attackers to escalate privileges on the system or cause service outages, posing a serious threat to the stability and security of the organization.

Recommendation

It is recommended to update xorg-x11-server to the latest version to mitigate this vulnerability and to monitor systems for unauthorized activities.

Other vulnerabilities in xorg-x11-server

CVE-2023-5380Medium
A use-after-free flaw was found in the xorg-x11-server that may lead to an X server crash in a specific multi-screen configuration. The issue occurs when the pointer is warped from a window on one screen to the root window of another screen, followed by the destruction of the original window and then another window.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS