ffmpeg | branch: release/4.4 | Michael Niedermayer <[email protected]> | Thu Jun 24 18:57:51 2021 +0200| [09e0a122028d5bad1236fec06a736de2ceee1eed] | committer: Michael Niedermayer
avformat/sbgdec: Check opt_duration and start for overflow Fixes: signed integer overflow: 2788626175500000000 + 7118941284000000000 cannot be represented in type 'long' Fixes: 35215/clusterfuzz-testcase-minimized-ffmpeg_dem_SBG_fuzzer-6123272247836672 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit 2768928624793f66694f7f2b0824f052e69e3557) Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=09e0a122028d5bad1236fec06a736de2ceee1eed --- libavformat/sbgdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/sbgdec.c b/libavformat/sbgdec.c index 9530ea42a5..55a5e27c1f 100644 --- a/libavformat/sbgdec.c +++ b/libavformat/sbgdec.c @@ -935,6 +935,9 @@ static int expand_timestamps(void *log, struct sbg_script *s) } if (s->start_ts == AV_NOPTS_VALUE) s->start_ts = (s->opt_start_at_first && s->tseq) ? s->tseq[0].ts.t : now; + if (s->start_ts > INT64_MAX - s->opt_duration) + return AVERROR_INVALIDDATA; + s->end_ts = s->opt_duration ? s->start_ts + s->opt_duration : AV_NOPTS_VALUE; /* may be overridden later by -E option */ cur_ts = now; _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
