NULL Pointer Dereference Affecting kernel-rt-core package, versions <0:4.18.0-425.3.1.rt7.213.el8
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTCORE-2933756
- published 22 Jun 2022
- disclosed 25 Mar 2022
Introduced: 25 Mar 2022
CVE-2022-2153 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-core 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-core package and not the kernel-rt-core package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
A flaw was found in the Linux kernel’s KVM when attempting to set a SynIC IRQ. This issue makes it possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.
References
- https://access.redhat.com/security/cve/CVE-2022-2153
- https://access.redhat.com/errata/RHSA-2022:7444
- https://bugzilla.redhat.com/show_bug.cgi?id=2069736
- https://github.com/torvalds/linux/commit/00b5f37189d24ac3ed46cb7f11742094778c46ce
- https://github.com/torvalds/linux/commit/7ec37d1cbe17d8189d9562178d8b29167fe1c31a
- https://github.com/torvalds/linux/commit/b1e34d325397a33d97d845e312d7cf2a8b646b44
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
- https://www.openwall.com/lists/oss-security/2022/06/22/1