On 4/24/2021 12:59 PM, Michael Niedermayer wrote:
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);
10001?
}
}
_______________________________________________
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".
