Fixes: signed integer overflow: 6365816 * 1000 cannot be represented in type 'int' Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_MCC_fuzzer-6737934184218624
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/mccdec.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/libavformat/mccdec.c b/libavformat/mccdec.c index 2a0b7905a0..7671be61d4 100644 --- a/libavformat/mccdec.c +++ b/libavformat/mccdec.c @@ -127,8 +127,7 @@ static int mcc_read_header(AVFormatContext *s) num = strtol(rate_str, &df, 10); den = 1; if (df && !av_strncasecmp(df, "DF", 2)) { - num *= 1000; - den = 1001; + av_reduce(&num, &den, num * 1000LL, 10001, INT_MAX); } } -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
