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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-29 13:16:37 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-08-03 02:08:16 +0200 |
| commit | 51ac3f43b8bf3b7f2af555af319cd240bb8b4ebf (patch) | |
| tree | 73e67afb3bd2b590f1e687e39bfec5df2dcfe2ee /libavcodec | |
| parent | 7dd836a3f9771e0e44df1b27e67d6866d91e06d7 (diff) | |
| download | ffmpeg-51ac3f43b8bf3b7f2af555af319cd240bb8b4ebf.tar.gz | |
avcodec/mlp_parser: Check if synccode is within buffer
Fixes: undefined shift
Fixes: 9216/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEHD_fuzzer-6281404575907840
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/mlp_parser.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mlp_parser.c b/libavcodec/mlp_parser.c index 185bd4d667..eb3435b6cb 100644 --- a/libavcodec/mlp_parser.c +++ b/libavcodec/mlp_parser.c @@ -320,7 +320,7 @@ static int mlp_parse(AVCodecParserContext *s, mp->bytes_left = 0; } - sync_present = (AV_RB32(buf + 4) & 0xfffffffe) == 0xf8726fba; + sync_present = buf_size >= 8 && (AV_RB32(buf + 4) & 0xfffffffe) == 0xf8726fba; if (!sync_present) { /* The first nibble of a frame is a parity check of the 4-byte |