Tracker / CVE-2024-42230
CVE-2024-42230
Medium 4.4
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.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 5.9 → 6.1.98 |
| linux | linux_kernel · 6.2 → 6.6.39 |
| linux | linux_kernel · 6.7 → 6.9.9 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.