ffmpeg | branch: release/7.1 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Nov 3 20:18:36 2024 +0100| [e2394166bfa981bdf02f02605dd76888e6932fbf] | committer: Michael Niedermayer
avformat/mccdec: Initialize and check rate.den Fixes: Assertion c > 0 failed at libavutil/mathematics.c:61 Fixes: use-of-uninitialized-value Fixes: 42537627/clusterfuzz-testcase-minimized-fuzzer_protocol_memory-5939605805793280 Found-by: ossfuzz Reported-by: Kacper Michajlow Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit bf8e43083f68c383b9d905d2c8c791ac33ecc7bc) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e2394166bfa981bdf02f02605dd76888e6932fbf --- libavformat/mccdec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavformat/mccdec.c b/libavformat/mccdec.c index 85bf93cd3b..8c0ea09b6b 100644 --- a/libavformat/mccdec.c +++ b/libavformat/mccdec.c @@ -93,7 +93,7 @@ static int mcc_read_header(AVFormatContext *s) { MCCContext *mcc = s->priv_data; AVStream *st = avformat_new_stream(s, NULL); - AVRational rate; + AVRational rate = {0}; int64_t ts, pos; uint8_t out[4096]; char line[4096]; @@ -139,7 +139,7 @@ static int mcc_read_header(AVFormatContext *s) continue; } - if (av_sscanf(line, "%d:%d:%d:%d", &hh, &mm, &ss, &fs) != 4) + if (av_sscanf(line, "%d:%d:%d:%d", &hh, &mm, &ss, &fs) != 4 || rate.den <= 0) continue; ts = av_sat_add64(av_rescale(hh * 3600LL + mm * 60LL + ss, rate.num, rate.den), fs); _______________________________________________ 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".
