Improper Update of Reference Count Affecting kernel-rt-debug package, versions <0:4.18.0-513.11.1.rt7.313.el8_9
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTDEBUG-6031889
- published 24 Oct 2023
- disclosed 28 Sep 2023
How to fix?
Upgrade Centos:8 kernel-rt-debug to version 0:4.18.0-513.11.1.rt7.313.el8_9 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug package and not the kernel-rt-debug package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use-after-free flaw in the way memory objects were handled when they were being used to store a surface. When running inside a VMware guest with 3D acceleration enabled, a local, unprivileged user could potentially use this flaw to escalate their privileges.