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CVE-2024-46822

5.5 · MEDIUM

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 hotpl…

Published Sep 27, 2024CWE-476EPSS 0.25%

Overview

CVE-2024-46822 is a medium-severity vulnerability. It was published on September 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/2488444274c70038eb6b686cba5f1ce48ebb9cddRefgit.kernel.org/stable/c/40cae0df42e5e7f7a1c0f32deed9c4027c1ba94eRefgit.kernel.org/stable/c/4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bcRefgit.kernel.org/stable/c/62ca6d3a905b4c40cd942f3cc645a6718f8bc7e7Refgit.kernel.org/stable/c/945be49f4e832a9184c313fdf8917475438a795bRefgit.kernel.org/stable/c/bc7fbb37e3d2df59336eadbd6a56be632e3c7df7Refgit.kernel.org/stable/c/f57769ff6fa7f97f1296965f20e8a2bb3ee9fd0fReflists.debian.org/debian-lts-announce/2024/10/msg00003.htmlReflists.debian.org/debian-lts-announce/2025/01/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-46822?

CVE-2024-46822 is a medium-severity vulnerability. It was published on September 27, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-46822?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-46822?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-46822?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-46822 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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