Release Date: | 2024-09-27 |
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.
See more information about CVE-2024-46822 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.
Base Score: | 5.5 | CVSS Vector: | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Attack Vector: | Local network | Attack Complexity: | Low |
Privileges Required: | Low | User Interaction: | None |
Scope: | Unchanged | Confidentiality Impact: | None |
Integrity Impact: | None | Availability Impact: | High |
Platform | Errata | Release Date |
Oracle Linux version 7 (kernel-uek) | ELSA-2024-12813 | 2024-11-12 |
Oracle Linux version 8 (kernel-uek) | ELSA-2024-12813 | 2024-11-12 |
Oracle Linux version 8 (kernel-uek) | ELSA-2024-12815 | 2024-11-11 |
Oracle Linux version 9 (kernel-uek) | ELSA-2024-12815 | 2024-11-11 |
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