Authentication Bypass Affecting kernel-rt package, versions <0:4.18.0-425.3.1.rt7.213.el8
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRT-3359221
- published 14 Mar 2023
- disclosed 12 Aug 2022
Introduced: 12 Aug 2022
CVE-2022-2503 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt 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 package and not the kernel-rt package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5