CVE-2024-42230 (GCVE-0-2024-42230)

Vulnerability from cvelistv5 – Published: 2024-07-30 07:47 – Updated: 2025-11-03 22:02
VLAI?
Title
powerpc/pseries: Fix scv instruction crash with kexec
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7fa95f9adaee7e5cbb195d3359741120829e488b , < c550679d604798d9fed8a5b2bb5693448a25407c (git)
Affected: 7fa95f9adaee7e5cbb195d3359741120829e488b , < d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5 (git)
Affected: 7fa95f9adaee7e5cbb195d3359741120829e488b , < 8c6506616386ce37e59b2745fc481c6713fae4f3 (git)
Affected: 7fa95f9adaee7e5cbb195d3359741120829e488b , < 21a741eb75f80397e5f7d3739e24d7d75e619011 (git)
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    Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 6.1.98 , ≤ 6.1.* (semver)
Unaffected: 6.6.39 , ≤ 6.6.* (semver)
Unaffected: 6.9.9 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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