CVE-2024-46822 (GCVE-0-2024-46822)
Vulnerability from cvelistv5
Published
2024-09-27 12:39
Modified
2025-12-20 08:51
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0be7320a635c2e434e8b67e0e9474a85ceb421c4
Version: 0be7320a635c2e434e8b67e0e9474a85ceb421c4
Version: 0be7320a635c2e434e8b67e0e9474a85ceb421c4
Version: 0be7320a635c2e434e8b67e0e9474a85ceb421c4
Version: 0be7320a635c2e434e8b67e0e9474a85ceb421c4
Version: 0be7320a635c2e434e8b67e0e9474a85ceb421c4
Version: 0be7320a635c2e434e8b67e0e9474a85ceb421c4
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