Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0be7320a635c2e434e8b67e0e9474a85ceb421c4 before f57769ff6fa7f97f1296965f20e8a2bb3ee9fd0f; affected 0be7320a635c2e434e8b67e0e9474a85ceb421c4 before 4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bc; affected 0be7320a635c2e434e8b67e0e9474a85ceb421c4 before 945be49f4e832a9184c313fdf8917475438a795b; affected 0be7320a635c2e434e8b67e0e9474a85ceb421c4 before 40cae0df42e5e7f7a1c0f32deed9c4027c1ba94e; affected 0be7320a635c2e434e8b67e0e9474a85ceb421c4 before 62ca6d3a905b4c40cd942f3cc645a6718f8bc7e7; affected 0be7320a635c2e434e8b67e0e9474a85ceb421c4 before bc7fbb37e3d2df59336eadbd6a56be632e3c7df7; affected 0be7320a635c2e434e8b67e0e9474a85ceb421c4 before 2488444274c70038eb6b686cba5f1ce48ebb9cdd |
| Linux / Linux | affected 3.7; unaffected 0 before 3.7; unaffected 5.4.284 through 5.4.*; unaffected 5.10.226 through 5.10.*; unaffected 5.15.167 through 5.15.*; unaffected 6.1.110 through 6.1.*; unaffected 6.6.51 through 6.6.*; unaffected 6.10.10 through 6.10.*; unaffected 6.11 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/f57769ff6fa7f97f1296965f20e8a2bb3ee9fd0f
- https://git.kernel.org/stable/c/4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bc
- https://git.kernel.org/stable/c/945be49f4e832a9184c313fdf8917475438a795b
- https://git.kernel.org/stable/c/40cae0df42e5e7f7a1c0f32deed9c4027c1ba94e
- https://git.kernel.org/stable/c/62ca6d3a905b4c40cd942f3cc645a6718f8bc7e7
- https://git.kernel.org/stable/c/bc7fbb37e3d2df59336eadbd6a56be632e3c7df7
- https://git.kernel.org/stable/c/2488444274c70038eb6b686cba5f1ce48ebb9cdd
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.