CVE-2024-46822 (GCVE-0-2024-46822)

Vulnerability from cvelistv5 – Published: 2024-09-27 12:39 – Updated: 2025-12-20 08:51
VLAI?
Title
arm64: acpi: Harden get_cpu_for_acpi_id() against missing CPU entry
Summary
In the Linux kernel, the following vulnerability has been resolved: arm64: acpi: Harden get_cpu_for_acpi_id() against missing CPU entry In a review discussion of the changes to support vCPU hotplug where a check was added on the GICC being enabled if was online, it was noted that there is need to map back to the cpu and use that to index into a cpumask. As such, a valid ID is needed. If an MPIDR check fails in acpi_map_gic_cpu_interface() it is possible for the entry in cpu_madt_gicc[cpu] == NULL. This function would then cause a NULL pointer dereference. Whilst a path to trigger this has not been established, harden this caller against the possibility.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0be7320a635c2e434e8b67e0e9474a85ceb421c4 , < f57769ff6fa7f97f1296965f20e8a2bb3ee9fd0f (git)
Affected: 0be7320a635c2e434e8b67e0e9474a85ceb421c4 , < 4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bc (git)
Affected: 0be7320a635c2e434e8b67e0e9474a85ceb421c4 , < 945be49f4e832a9184c313fdf8917475438a795b (git)
Affected: 0be7320a635c2e434e8b67e0e9474a85ceb421c4 , < 40cae0df42e5e7f7a1c0f32deed9c4027c1ba94e (git)
Affected: 0be7320a635c2e434e8b67e0e9474a85ceb421c4 , < 62ca6d3a905b4c40cd942f3cc645a6718f8bc7e7 (git)
Affected: 0be7320a635c2e434e8b67e0e9474a85ceb421c4 , < bc7fbb37e3d2df59336eadbd6a56be632e3c7df7 (git)
Affected: 0be7320a635c2e434e8b67e0e9474a85ceb421c4 , < 2488444274c70038eb6b686cba5f1ce48ebb9cdd (git)
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    Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 5.4.284 , ≤ 5.4.* (semver)
Unaffected: 5.10.226 , ≤ 5.10.* (semver)
Unaffected: 5.15.167 , ≤ 5.15.* (semver)
Unaffected: 6.1.110 , ≤ 6.1.* (semver)
Unaffected: 6.6.51 , ≤ 6.6.* (semver)
Unaffected: 6.10.10 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (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.
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  • 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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