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avformat/xwma: Check for EOF in dpds_table read code 

Fixes: Timeout (>30 -> 140ms)
Fixes: 26478/clusterfuzz-testcase-minimized-ffmpeg_dem_XWMA_fuzzer-5918147066200064

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-10-21 19:37:45 +02:00
parent 91b8e00538
commit 44b18a76b8
1 changed files with 4 additions and 0 deletions
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4
libavformat/xwma.c
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@ -211,6 +211,10 @@ static int xwma_read_header(AVFormatContext *s)
} }
for (i = 0; i < dpds_table_size; ++i) { for (i = 0; i < dpds_table_size; ++i) {
if (avio_feof(pb)) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
dpds_table[i] = avio_rl32(pb); dpds_table[i] = avio_rl32(pb);
size -= 4; size -= 4;
} }