medium
4.7
CWE
416
Advisory Published
CVE Published
CVE Published
Updated

CVE-2023-5380: Xorg-x11-server: use-after-free bug in destroywindow

First published: Wed Oct 18 2023(Updated: )

A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
ubuntu/xorg-server<2:1.15.1-0ubuntu2.11+
2:1.15.1-0ubuntu2.11+
ubuntu/xorg-server<2:1.18.4-0ubuntu0.12+
2:1.18.4-0ubuntu0.12+
ubuntu/xorg-server<2:1.19.6-1ubuntu4.15+
2:1.19.6-1ubuntu4.15+
ubuntu/xorg-server<21.1.9
21.1.9
ubuntu/xorg-server<2:1.20.13-1ubuntu1~20.04.9
2:1.20.13-1ubuntu1~20.04.9
ubuntu/xorg-server<2:21.1.4-2ubuntu1.7~22.04.2
2:21.1.4-2ubuntu1.7~22.04.2
ubuntu/xorg-server<2:21.1.7-1ubuntu3.1
2:21.1.7-1ubuntu3.1
ubuntu/xorg-server<2:21.1.7-3ubuntu2.1
2:21.1.7-3ubuntu2.1
debian/xorg-server<=2:1.20.4-1+deb10u4<=2:1.20.11-1+deb11u6
2:1.20.4-1+deb10u12
2:1.20.11-1+deb11u10
2:21.1.7-3+deb12u2
2:21.1.7-3+deb12u4
2:21.1.10-1
X.Org X Server<21.1.9
X.org Xwayland<23.2.2
Redhat Enterprise Linux=7.0
Redhat Enterprise Linux=8.0
Redhat Enterprise Linux=9.0
Fedoraproject Fedora=38
Debian Debian Linux=11.0
Debian Debian Linux=12.0
redhat/xorg-server<21.1.9
21.1.9
Fedoraproject Fedora=37
Fedoraproject Fedora=39

Remedy

https://lists.x.org/archives/xorg-announce/2023-October/003430.html

Remedy

https://gitlab.freedesktop.org/xorg/xserver/-/commit/564ccf2ce9616620456102727acb8b0256b7bbd7

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-5380?

    CVE-2023-5380 is a use-after-free vulnerability in the xorg-x11-server that may lead to an X server crash in a specific configuration.

  • How does CVE-2023-5380 affect the xorg-x11-server?

    CVE-2023-5380 affects the xorg-x11-server by causing a use-after-free flaw that can result in an X server crash.

  • What is the severity of CVE-2023-5380?

    The severity of CVE-2023-5380 is medium with a CVSS score of 5.1.

  • How can I fix CVE-2023-5380?

    To fix CVE-2023-5380, update the xorg-x11-server package to version 21.1.9 or higher.

  • Where can I find more information about CVE-2023-5380?

    You can find more information about CVE-2023-5380 at the following references: [link1](https://access.redhat.com/security/cve/CVE-2023-5380), [link2](https://bugzilla.redhat.com/show_bug.cgi?id=2244736), [link3](https://lists.x.org/archives/xorg-announce/2023-October/003430.html).

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