CVE - CVE-2024-42230

CVE-ID
CVE-2024-42230	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/21a741eb75f80397e5f7d3739e24d7d75e619011 URL:https://git.kernel.org/stable/c/21a741eb75f80397e5f7d3739e24d7d75e619011 MISC:https://git.kernel.org/stable/c/8c6506616386ce37e59b2745fc481c6713fae4f3 URL:https://git.kernel.org/stable/c/8c6506616386ce37e59b2745fc481c6713fae4f3 MISC:https://git.kernel.org/stable/c/c550679d604798d9fed8a5b2bb5693448a25407c URL:https://git.kernel.org/stable/c/c550679d604798d9fed8a5b2bb5693448a25407c MISC:https://git.kernel.org/stable/c/d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5 URL:https://git.kernel.org/stable/c/d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5
Assigning CNA
kernel.org
Date Record Created
20240730	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240730)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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