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NVD / CVE Program· CNA Linux

CVE-2024-46822: arm64: acpi: Harden get_cpu_for_acpi_id() against missing CPU entry

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.24% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 2488444274c70038eb6b686cba5f1ce48ebb9cdd, 40cae0df42e5e7f7a1c0f32deed9c4027c1ba94e, 4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bc; Azure Linux 3.0 ARM 6.6.51.1-5; Azure Linux 3.0 x64 6.6.51.1-5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 2488444274c70038eb6b686cba5f1ce48ebb9cdd, 40cae0df42e5e7f7a1c0f32deed9c4027c1ba94e, 4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bc; Azure Linux 3.0 ARM 6.6.51.1-5; Azure Linux 3.0 x64 6.6.51.1-5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 27, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 16th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-46822

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 5.4.284
  • linux linux kernel5.5 and later · before 5.10.226
  • linux linux kernel5.11 and later · before 5.15.167
  • linux linux kernel5.16 and later · before 6.1.110
  • linux linux kernel6.2 and later · before 6.6.51
  • linux linux kernel6.7 and later · before 6.10.10

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.7affected
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before f57769ff6fa7f97f1296965f20e8a2bb3ee9fd0faffected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before 4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bcaffected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before 945be49f4e832a9184c313fdf8917475438a795baffected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before 40cae0df42e5e7f7a1c0f32deed9c4027c1ba94eaffected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before 62ca6d3a905b4c40cd942f3cc645a6718f8bc7e7affected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before bc7fbb37e3d2df59336eadbd6a56be632e3c7df7affected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before 2488444274c70038eb6b686cba5f1ce48ebb9cddaffected · git
    • before 3.7not affected · semver
    • 5.4.284 and later · up to and including 5.4.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.112-16.1.112-1
Debian:13linuxbefore 6.10.11-16.10.11-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-46820Sep 27, 2024 · drm/amdgpu/vcn: remove irq disabling in vcn 5 suspend
    31Monitor
  • ← EarlierCVE-2024-46821Sep 27, 2024 · drm/amd/pm: Fix negative array index read
    31Monitor
  • Later →CVE-2024-46823Sep 27, 2024 · kunit/overflow: Fix UB in overflow_allocation_test
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2488444274c70038eb6b686cba5f1ce48ebb9cddVendor (CNA)
Linux Linux40cae0df42e5e7f7a1c0f32deed9c4027c1ba94eVendor (CNA)
Linux Linux4c3b21204abb4fa3ab310fbbb5cf7f0e85f3a1bcVendor (CNA)
Linux Linux62ca6d3a905b4c40cd942f3cc645a6718f8bc7e7Vendor (CNA)
Linux Linux945be49f4e832a9184c313fdf8917475438a795bVendor (CNA)
Linux Linuxbc7fbb37e3d2df59336eadbd6a56be632e3c7df7Vendor (CNA)
Linux Linuxf57769ff6fa7f97f1296965f20e8a2bb3ee9fd0fVendor (CNA)
Azure Linux 3.0 ARM6.6.51.1-5 · kernelMicrosoft (MSRC)
Azure Linux 3.0 x646.6.51.1-5 · kernelMicrosoft (MSRC)
CBL Mariner 2.0 ARM5.15.167.1-1 · kernelMicrosoft (MSRC)
CBL Mariner 2.0 x645.15.167.1-1 · kernelMicrosoft (MSRC)
debian:linux6.1.112-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records