Improper Ownership Management Affecting kernel-rt-core package, versions <0:4.18.0-425.19.2.rt7.230.el8_7
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTCORE-3368287
- published 22 Mar 2023
- disclosed 24 Jan 2023
Introduced: 24 Jan 2023
CVE-2023-0386 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-core to version 0:4.18.0-425.19.2.rt7.230.el8_7 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, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.
References
- https://access.redhat.com/security/cve/CVE-2023-0386
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
- https://security.netapp.com/advisory/ntap-20230420-0004/
- https://www.debian.org/security/2023/dsa-5402
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html