Opened 13 months ago

Closed 13 months ago

Last modified 13 months ago

#8891 closed defect (needs_more_info)

ffmpeg crashes on certain flv input files

Reported by: meinlschmidt Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:

I have been fuzzing ffmpeg and detected crashes on some .flv input files. You can find the crash files and the crash logs in the attachment.

How to reproduce:

% ffmpeg -i crashfile.flv

ffmpeg N-99074-g9beaf536fe
built on Linux kali 5.7.0-kali3-amd64 SMP Debian 5.7.17-1kali1 (2020-08-26)

Attachments (10)

crash1.txt (5.1 KB ) - added by meinlschmidt 13 months ago.
crash2.txt (6.4 KB ) - added by meinlschmidt 13 months ago.
crash3.txt (3.4 KB ) - added by meinlschmidt 13 months ago.
crash4.txt (67.9 KB ) - added by meinlschmidt 13 months ago.
crash5.txt (66.1 KB ) - added by meinlschmidt 13 months ago.
crash1.flv (4.8 KB ) - added by meinlschmidt 13 months ago.
crash2.flv (4.7 KB ) - added by meinlschmidt 13 months ago.
crash3.flv (2.8 KB ) - added by meinlschmidt 13 months ago.
crash4.flv (18.8 KB ) - added by meinlschmidt 13 months ago.
crash5.flv (18.8 KB ) - added by meinlschmidt 13 months ago.

Download all attachments as: .zip

Change History (14)

by meinlschmidt, 13 months ago

Attachment: crash1.txt added

by meinlschmidt, 13 months ago

Attachment: crash2.txt added

by meinlschmidt, 13 months ago

Attachment: crash3.txt added

by meinlschmidt, 13 months ago

Attachment: crash4.txt added

by meinlschmidt, 13 months ago

Attachment: crash5.txt added

by meinlschmidt, 13 months ago

Attachment: crash1.flv added

by meinlschmidt, 13 months ago

Attachment: crash2.flv added

by meinlschmidt, 13 months ago

Attachment: crash3.flv added

by meinlschmidt, 13 months ago

Attachment: crash4.flv added

by meinlschmidt, 13 months ago

Attachment: crash5.flv added

comment:1 by Elon Musk, 13 months ago

I see no crashes just some strange uninitialized issues under valgrind.

in reply to:  1 comment:2 by meinlschmidt, 13 months ago

Replying to richardpl:

I see no crashes just some strange uninitialized issues under valgrind.

Hi richard, yeah this may be. I just was not sure if there is a bug or not and thought its good if some professional checks it. Thought maybe it could be helpful.
Should i change the ticket description?

Last edited 13 months ago by meinlschmidt (previous) (diff)

comment:3 by Carl Eugen Hoyos, 13 months ago

Component: ffmpegundetermined
Resolution: needs_more_info
Status: newclosed

None of the text files you attached show a crash and I cannot reproduce any irregularity with any of the files you attached.

comment:4 by Balling, 13 months ago

Is it assertion failures or what? Because if it is, please give us them.

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