RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-12-24 08:12:44 +00:00
Code Issues Projects Releases Wiki Activity

avutil/timecode: Avoid fps overflow

Browse Source 
Fixes: Integer overflow and division by 0
Fixes: poc-202102-div.mov

Found-by: 1vanChen of NSFOCUS Security Team
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-03-01 13:44:12 +01:00
parent 403b35e16e
commit c94875471e
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libavutil/timecode.c
View File

@ -114,8 +114,8 @@ char *av_timecode_make_string(const AVTimecode *tc, char *buf, int framenum)
}
ff = framenum % fps;
ss = framenum / fps % 60;
mm = framenum / (fps*60) % 60;
hh = framenum / (fps*3600);
mm = framenum / (fps*60LL) % 60;
hh = framenum / (fps*3600LL);
if (tc->flags & AV_TIMECODE_FLAG_24HOURSMAX)
hh = hh % 24;
snprintf(buf, AV_TIMECODE_STR_SIZE, "%s%02d:%02d:%02d%c%02d",