CVE-2024-46822

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0be7320a635c2e434e8b67e0e9474a85ceb421c4 < f57769ff6fa7f97f1296965f20e8a2bb3ee9fd0faffected
LinuxLinux0be7320a635c2e434e8b67e0e9474a85ceb421c4 < 4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bcaffected
LinuxLinux0be7320a635c2e434e8b67e0e9474a85ceb421c4 < 945be49f4e832a9184c313fdf8917475438a795baffected
LinuxLinux0be7320a635c2e434e8b67e0e9474a85ceb421c4 < 40cae0df42e5e7f7a1c0f32deed9c4027c1ba94eaffected
LinuxLinux0be7320a635c2e434e8b67e0e9474a85ceb421c4 < 62ca6d3a905b4c40cd942f3cc645a6718f8bc7e7affected
LinuxLinux0be7320a635c2e434e8b67e0e9474a85ceb421c4 < bc7fbb37e3d2df59336eadbd6a56be632e3c7df7affected
LinuxLinux0be7320a635c2e434e8b67e0e9474a85ceb421c4 < 2488444274c70038eb6b686cba5f1ce48ebb9cddaffected
LinuxLinux3.7affected
LinuxLinux0 < 3.7unaffected
LinuxLinux5.4.284 <= 5.4.*unaffected
LinuxLinux5.10.226 <= 5.10.*unaffected
LinuxLinux5.15.167 <= 5.15.*unaffected
LinuxLinux6.1.110 <= 6.1.*unaffected
LinuxLinux6.6.51 <= 6.6.*unaffected
LinuxLinux6.10.10 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References