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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-08-07 00:18:53 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-08-08 19:10:05 +0200 |
| commit | c390234da2e3c7a8884f5592f0b9b4928c482b3e (patch) | |
| tree | 9e7804998478b1538a350a4178eb78b5055b605b | |
| parent | c95ea0310468e0a0906fa7d590ff7406c39d6991 (diff) | |
| download | ffmpeg-c390234da2e3c7a8884f5592f0b9b4928c482b3e.tar.gz | |
avformat/wtvdec: Check length of read mpeg2_descriptor
Fixes: Use of uninitialized value
Fixes: 70900/clusterfuzz-testcase-minimized-ffmpeg_dem_WTV_fuzzer-6286909377150976
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>
| -rw-r--r-- | libavformat/wtvdec.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c index 1a6c4c3348..730c7fca78 100644 --- a/libavformat/wtvdec.c +++ b/libavformat/wtvdec.c @@ -846,7 +846,8 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p } buf_size = FFMIN(len - consumed, sizeof(buf)); - avio_read(pb, buf, buf_size); + if (avio_read(pb, buf, buf_size) != buf_size) + return AVERROR_INVALIDDATA; consumed += buf_size; ff_parse_mpeg2_descriptor(s, st, 0, &pbuf, buf + buf_size, NULL, 0, 0, NULL); } |