ffmpeg | branch: release/4.4 | Michael Niedermayer <mich...@niedermayer.cc> | Wed Sep 15 22:00:44 2021 +0200| [1d2a3988270faa0dff5a3eff500d71c01789bf29] | committer: Michael Niedermayer
avformat/sbgdec: Check for t0 overflow in expand_tseq() Fixes: signed integer overflow: 4611686025627387904 + 4611686025627387904 cannot be represented in type 'long' Fixes: 35489/clusterfuzz-testcase-minimized-ffmpeg_dem_SBG_fuzzer-4862678601433088 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 f624c92d4c6fa73dfa95959d886090af6790bc36) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1d2a3988270faa0dff5a3eff500d71c01789bf29 --- libavformat/sbgdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/sbgdec.c b/libavformat/sbgdec.c index 55a5e27c1f..36cfff20fc 100644 --- a/libavformat/sbgdec.c +++ b/libavformat/sbgdec.c @@ -964,6 +964,9 @@ static int expand_tseq(void *log, struct sbg_script *s, int *nb_ev_max, tseq->name_len, tseq->name); return AVERROR(EINVAL); } + if (t0 + (uint64_t)tseq->ts.t != av_sat_add64(t0, tseq->ts.t)) + return AVERROR(EINVAL); + t0 += tseq->ts.t; for (i = 0; i < s->nb_def; i++) { if (s->def[i].name_len == tseq->name_len && _______________________________________________ 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".
