CVE-2024-42230
"IBM PowerPC pSeries Real-Mode Interrupt Vulnerability"
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.
INFO
Published Date :
July 30, 2024, 8:15 a.m.
Last Modified :
July 30, 2024, 7:32 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
0.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-42230.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-42230 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-42230 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jul. 30, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/21a741eb75f80397e5f7d3739e24d7d75e619011 No Types Assigned https://git.kernel.org/stable/c/21a741eb75f80397e5f7d3739e24d7d75e619011 Patch Changed Reference Type https://git.kernel.org/stable/c/8c6506616386ce37e59b2745fc481c6713fae4f3 No Types Assigned https://git.kernel.org/stable/c/8c6506616386ce37e59b2745fc481c6713fae4f3 Patch Changed Reference Type https://git.kernel.org/stable/c/c550679d604798d9fed8a5b2bb5693448a25407c No Types Assigned https://git.kernel.org/stable/c/c550679d604798d9fed8a5b2bb5693448a25407c Patch Changed Reference Type https://git.kernel.org/stable/c/d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5 No Types Assigned https://git.kernel.org/stable/c/d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5 Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.9 up to (excluding) 6.1.98 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (including) 6.6.39 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.9.9 *cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc6:*:*:*:*:*:* -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 30, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/c550679d604798d9fed8a5b2bb5693448a25407c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8c6506616386ce37e59b2745fc481c6713fae4f3 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/21a741eb75f80397e5f7d3739e24d7d75e619011 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-42230 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-42230
weaknesses.