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avformat/4xm: Make audio_frame_count 64bit

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Fixes: signed integer overflow: 2099257366 * 2 cannot be represented in type 'int'
Fixes: 27486/clusterfuzz-testcase-minimized-ffmpeg_dem_FOURXM_fuzzer-5112179134824448

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 842c268c6436c9e90e689402be138c2e539f7059)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-11-22 20:41:56 +01:00
parent b26360b7f9
commit 2aa07c6b8e
1 changed files with 1 additions and 1 deletions
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libavformat/4xm.c
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@ -298,7 +298,7 @@ static int fourxm_read_packet(AVFormatContext *s,
unsigned int track_number;
int packet_read = 0;
unsigned char header[8];
int audio_frame_count;
int64_t audio_frame_count;
while (!packet_read) {
if ((ret = avio_read(s->pb, header, 8)) < 0)