Heap Overflow in FFmpeg EXIF
32 points
2 hours ago
| 3 comments
| bugs.pwno.io
| HN
ComputerGuru
1 hour ago
[-]
Nice find.

(I don’t see what this being reported during the Christmas holidays has to do with not revealing the disclosure and patch timeline, a “note that delays should be attributed to Christmas” would have sufficed.)

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renewiltord
21 minutes ago
[-]
Hmm interesting. You can see recent edits to the file here https://github.com/FFmpeg/FFmpeg/commits/master/libavcodec/e...

This specific issue is fixed here https://github.com/FFmpeg/FFmpeg/commit/4bfac71ecd96488dd2dc...

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rvz
1 hour ago
[-]
> Pwno is a AI cybersecurity startup...

We all know that LLMs were used to find these vulnerabilities, specifically on high impact projects. That's fine.

However, my only question is who actually provided the patch: The maintainers of FFmpeg? The LLM that is being used? Or the security researchers themselves after finding the issue?

It seems that these two statements about the issue are in conflict:

> We found and patched 6 memory vulnerabilities in FFmpeg in two days.

> Dec, 2025: avcodec/exif maintainer provided patch.

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9cb14c1ec0
10 minutes ago
[-]
> We all know that LLMs were used to find these vulnerabilities

How do we know that? You seem quite certain.

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