Use After Free Affecting kernel-rt-debug package, versions <0:4.18.0-425.3.1.rt7.213.el8
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTDEBUG-2869696
- published 14 Jun 2022
- disclosed 7 Apr 2022
Introduced: 7 Apr 2022
CVE-2022-1158 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-debug to version 0:4.18.0-425.3.1.rt7.213.el8 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.
A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition.