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avformat/electronicarts: Check for EOF in each iteration of the loop in ea_read_packet() 

Fixes: timeout(>20sec -> 1ms)
Fixes: 26526/clusterfuzz-testcase-minimized-ffmpeg_dem_EA_fuzzer-5672328069120000

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-10-24 19:24:30 +02:00
parent 6e64d89410
commit 857aba7c45
1 changed files with 2 additions and 0 deletions
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2
libavformat/electronicarts.c
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@ -582,6 +582,8 @@ static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
int av_uninit(num_samples);
while ((!packet_read && !hit_end) || partial_packet) {
if (avio_feof(pb))
return AVERROR_EOF;
chunk_type = avio_rl32(pb);
chunk_size = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
if (chunk_size < 8)