Race Condition Affecting kernel-rt-debug-core package, versions <0:4.18.0-553.rt7.342.el8_10
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTDEBUGCORE-6054090
- published 9 Nov 2023
- disclosed 17 Aug 2023
How to fix?
Upgrade Centos:8 kernel-rt-debug-core to version 0:4.18.0-553.rt7.342.el8_10 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-core package and not the kernel-rt-debug-core package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.