CVE-2023-52462 Affecting kernel-core package, versions *
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Test your applications- Snyk ID SNYK-RHEL9-KERNELCORE-6268682
- published 24 Feb 2024
- disclosed 23 Feb 2024
Introduced: 23 Feb 2024
CVE-2023-52462 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:9 kernel-core.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-core package and not the kernel-core package as distributed by RHEL.
See How to fix? for RHEL:9 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
bpf: fix check for attempt to corrupt spilled pointer
When register is spilled onto a stack as a 1/2/4-byte register, we set slot_type[BPF_REG_SIZE - 1] (plus potentially few more below it, depending on actual spill size). So to check if some stack slot has spilled register we need to consult slot_type[7], not slot_type[0].
To avoid the need to remember and double-check this in the future, just use is_spilled_reg() helper.
References
- https://access.redhat.com/security/cve/CVE-2023-52462
- https://git.kernel.org/stable/c/2757f17972d87773b3677777f5682510f13c66ef
- https://git.kernel.org/stable/c/40617d45ea05535105e202a8a819e388a2b1f036
- https://git.kernel.org/stable/c/67e6707f07354ed1acb4e65552e97c60cf9d69cf
- https://git.kernel.org/stable/c/8dc15b0670594543c356567a1a45b0182ec63174
- https://git.kernel.org/stable/c/ab125ed3ec1c10ccc36bc98c7a4256ad114a3dae
- https://git.kernel.org/stable/c/fc3e3c50a0a4cac1463967c110686189e4a59104
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html