RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-12-25 16:52:31 +00:00
Code Issues Projects Releases Wiki Activity

avformat/flvdec: timestamps cannot use the full int64 range

Browse Source 
We do not support this as we multiply by 1000
Fixes: signed integer overflow: -45318575073853696 * 1000 cannot be represented in type 'long'
Fixes: 42804/clusterfuzz-testcase-minimized-ffmpeg_dem_LIVE_FLV_fuzzer-4630325425209344

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-12-23 20:36:16 +01:00
parent 68f8292aa9
commit c217ca7718
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavformat/flvdec.c
View File

@ -461,6 +461,8 @@ static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, int64_t m
d = av_int2double(avio_rb64(ioc));
if (isnan(d) || d < INT64_MIN || d > INT64_MAX)
goto invalid;
if (current_array == &times && (d <= INT64_MIN / 1000 || d >= INT64_MAX / 1000))
goto invalid;
current_array[0][i] = d;
}
if (times && filepositions) {