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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-5380
• https://access.redhat.com/security/cve/CVE-2023-5380
• https://bugzilla.redhat.com/show_bug.cgi?id=2244736
• https://lists.x.org/archives/xorg-announce/2023-October/003430.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SN6KV4XGQJRVAOSM5C3CWMVAXO53COIP/
• https://www.debian.org/security/2023/dsa-5534
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3RK66CXMXO3PCPDU3GDY5FK4UYHUXQJT/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AKKIE626TZOOPD533EYN47J4RFNHZVOP/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2WS5E7H4A5J3U5YBCTMRPQVGWK5LVH7D/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HO2Q2NP6R62ZRQQG3XQ4AXUT7J2EKKKY/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJXNI4BXURC2BKPNAHFJK3C5ZETB7PER/
• https://access.redhat.com/errata/RHSA-2023:7428
• https://security.netapp.com/advisory/ntap-20231130-0004/
• https://security.gentoo.org/glsa/202401-30