NULL Pointer Dereference Affecting qemu-img package, versions <15:6.2.0-33.module+el8.8.0+19768+98f68f21
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Test your applications- Snyk ID SNYK-CENTOS8-QEMUIMG-5745918
- published 28 Jun 2023
- disclosed 28 Jun 2023
Introduced: 28 Jun 2023
CVE-2023-3354 Open this link in a new tabHow to fix?
Upgrade Centos:8 qemu-img to version 15:6.2.0-33.module+el8.8.0+19768+98f68f21 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu-img package and not the qemu-img package as distributed by Centos.
See How to fix? for Centos:8 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://access.redhat.com/security/cve/CVE-2023-3354
- 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