ffmpeg | branch: release/4.4 | Michael Niedermayer <mich...@niedermayer.cc> | Sat Sep 30 21:18:14 2023 +0200| [81da1fea180a1d74c6cb780a13519260f4de0bdf] | committer: Michael Niedermayer
avformat/sbgdec: Check for period overflow Fixes: signed integer overflow: 4481246996173000000 - -4778576820000000000 cannot be represented in type 'long' Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_SBG_fuzzer-5063670588899328 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Nicolas George <geo...@nsup.org> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit a9137110eda130ba07a2a43bdedff2421efbb7a9) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=81da1fea180a1d74c6cb780a13519260f4de0bdf --- libavformat/sbgdec.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavformat/sbgdec.c b/libavformat/sbgdec.c index c86bc40862..3782fb1b34 100644 --- a/libavformat/sbgdec.c +++ b/libavformat/sbgdec.c @@ -1288,7 +1288,10 @@ static int generate_intervals(void *log, struct sbg_script *s, int sample_rate, /* SBaGen handles the time before and after the extremal events, and the corresponding transitions, as if the sequence were cyclic with a 24-hours period. */ - period = s->events[s->nb_events - 1].ts - s->events[0].ts; + period = s->events[s->nb_events - 1].ts - (uint64_t)s->events[0].ts; + if (period < 0) + return AVERROR_INVALIDDATA; + period = (period + (DAY_TS - 1)) / DAY_TS * DAY_TS; period = FFMAX(period, DAY_TS); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
