CVE-2024-46822

Severity CVSS v4.0:

Pending analysis

Type:

CWE-476 NULL Pointer Dereference

Publication date:

27/09/2024

Last modified:

03/11/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		5.4.284 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.226 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.167 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.110 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.51 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.10.10 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2024-46822

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools