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Ubuntu: (Multiple Advisories) (CVE-2023-1393): X.Org X Server vulnerability

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Ubuntu: (Multiple Advisories) (CVE-2023-1393): X.Org X Server vulnerability

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
03/30/2023
Created
05/05/2023
Added
04/10/2023
Modified
04/10/2023

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.

Solution(s)

  • ubuntu-upgrade-xserver-xorg-core
  • ubuntu-upgrade-xserver-xorg-core-hwe-18-04
  • ubuntu-upgrade-xwayland
  • ubuntu-upgrade-xwayland-hwe-18-04

References

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