VULNERABILITY INTELLIGENCE

CVE-2023-1393

CVSS score7.8 HIGH
EPSS probability0.44%
CISA KEVNot currently listed
Published2023-03-30
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.

Weakness classification

  • secalert@redhat.com: CWE-416
  • nvd@nist.gov: CWE-416

Primary references