NULL Pointer Dereference Affecting qemu-kvm-tools package, versions <17:7.2.0-14.el9_2.5.alma.1
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Test your applications- Snyk ID SNYK-ALMALINUX9-QEMUKVMTOOLS-5902559
- published 14 Sep 2023
- disclosed 19 Sep 2023
Introduced: 14 Sep 2023
CVE-2023-3354 Open this link in a new tabHow to fix?
Upgrade AlmaLinux:9 qemu-kvm-tools to version 17:7.2.0-14.el9_2.5.alma.1 or higher.
This issue was patched in ALSA-2023:5094.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu-kvm-tools package and not the qemu-kvm-tools package as distributed by AlmaLinux.
See How to fix? for AlmaLinux:9 relevant fixed versions and status.
A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.
References
- https://errata.almalinux.org/9/ALSA-2023-5094.html
- https://errata.almalinux.org/8/ALSA-2023-5264.html
- https://access.redhat.com/security/cve/CVE-2023-3354
- https://access.redhat.com/errata/RHSA-2023:5094
- https://access.redhat.com/errata/RHSA-2023:5264
- https://bugzilla.redhat.com/show_bug.cgi?id=2216478
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MURWGXDIF2WTDXV36T6HFJDBL632AO7R/
- https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html