Resource Injection Affecting kernel-rt package, versions *
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Test your applications- Snyk ID SNYK-CENTOS7-KERNELRT-7665544
- published 9 Aug 2024
- disclosed 30 Jul 2024
Introduced: 30 Jul 2024
CVE-2024-42230 Open this link in a new tabHow to fix?
There is no fixed version for Centos:7 kernel-rt.
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:7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
powerpc/pseries: Fix scv instruction crash with kexec
kexec on pseries disables AIL (reloc_on_exc), required for scv instruction support, before other CPUs have been shut down. This means they can execute scv instructions after AIL is disabled, which causes an interrupt at an unexpected entry location that crashes the kernel.
Change the kexec sequence to disable AIL after other CPUs have been brought down.
As a refresher, the real-mode scv interrupt vector is 0x17000, and the fixed-location head code probably couldn't easily deal with implementing such high addresses so it was just decided not to support that interrupt at all.
References
- https://access.redhat.com/security/cve/CVE-2024-42230
- https://git.kernel.org/stable/c/21a741eb75f80397e5f7d3739e24d7d75e619011
- https://git.kernel.org/stable/c/8c6506616386ce37e59b2745fc481c6713fae4f3
- https://git.kernel.org/stable/c/c550679d604798d9fed8a5b2bb5693448a25407c
- https://git.kernel.org/stable/c/d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5