CVE-2024-46822

MEDIUM EPSS 15.3%
Published Sep 27, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 27, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
15.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel* <5.4.284
linuxlinux_kernel*≥5.5  –  <5.10.226
linuxlinux_kernel*≥5.11  –  <5.15.167
linuxlinux_kernel*≥5.16  –  <6.1.110
linuxlinux_kernel*≥6.2  –  <6.6.51
linuxlinux_kernel*≥6.7  –  <6.10.10

References 9

  • git.kernel.org https://git.kernel.org/stable/c/2488444274c70038eb6b686cba5f1ce48ebb9cdd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/40cae0df42e5e7f7a1c0f32deed9c4027c1ba94e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/62ca6d3a905b4c40cd942f3cc645a6718f8bc7e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/945be49f4e832a9184c313fdf8917475438a795b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bc7fbb37e3d2df59336eadbd6a56be632e3c7df7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f57769ff6fa7f97f1296965f20e8a2bb3ee9fd0f
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2488444274c70038eb6b686cba5f1ce48ebb9cdd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/40cae0df42e5e7f7a1c0f32deed9c4027c1ba94e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/62ca6d3a905b4c40cd942f3cc645a6718f8bc7e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/945be49f4e832a9184c313fdf8917475438a795b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bc7fbb37e3d2df59336eadbd6a56be632e3c7df7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f57769ff6fa7f97f1296965f20e8a2bb3ee9fd0f
    Patch