Bug 6773

Summary:	Segfault when passing nonexisting filter option (fixed in master)
Product:	Fedora	Reporter:	onlylogout
Component:	ffmpeg	Assignee:	Dominik 'Rathann' Mierzejewski <dominik>
Status:	RESOLVED FIXED
Severity:	minor	CC:	belegdol, kwizart, leigh123linux
Priority:	P5
Version:	f38
Hardware:	x86_64
OS:	GNU/Linux
namespace:

Description onlylogout 2023-10-07 17:08:42 CEST

The following command segfaults on my system:
```
ffmpeg -y -f rawvideo -s 1x1 -i /dev/zero -vf palettegen=doesnt_exist=64 dummy.png
```

That's because the AVOption is not initialized to zero and the nonexisting option doesn't begin with a slash.
There's a fix for this already in the master branch, but contrary to its description, it's not just a "silence warning" thing.

The fix:
https://github.com/FFmpeg/FFmpeg/commit/a0a0a804998da8d1a397479c9bafeb000e6be088

Comment 1 Dominik 'Rathann' Mierzejewski 2023-10-08 21:46:05 CEST

Thanks for the report. I can reproduce the crash. I'll backport the fix as soon as possible.

Comment 2 Dominik 'Rathann' Mierzejewski 2023-12-18 09:31:27 CET

This is fixed in F39+.

Comment 3 Dominik 'Rathann' Mierzejewski 2024-05-14 13:20:22 CEST

I do not have time to backport this to F38.