NULL Pointer Dereference Affecting kernel-tools package, versions <0:4.18.0-513.5.1.el8_9
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Test your applications- Snyk ID SNYK-RHEL8-KERNELTOOLS-5497922
- published 5 May 2023
- disclosed 21 Jan 2023
Introduced: 21 Jan 2023
CVE-2023-0458 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-tools to version 0:4.18.0-513.5.1.el8_9 or higher.
This issue was patched in RHSA-2023:7077.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools package and not the kernel-tools package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11
References
- https://access.redhat.com/security/cve/CVE-2023-0458
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/diff/kernel/sys.c?id=v6.1.8&id2=v6.1.7
- https://github.com/torvalds/linux/commit/739790605705ddcf18f21782b9c99ad7d53a8c11
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html