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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-07-06 11:51:09 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-07-17 23:18:50 +0200 |
| commit | 2d900d8fe0aaf9c984e024956eb537ecdfe2c949 (patch) | |
| tree | db05b84dcf02ef0339ae302f373de15caf2d3972 /libavcodec/dnxhd_parser.c | |
| parent | f6d1b18b3d58cd8f06eea653c4a6e22e4b9245e6 (diff) | |
| download | ffmpeg-2d900d8fe0aaf9c984e024956eb537ecdfe2c949.tar.gz | |
avcodec/dnxhd_parser: Fix parser when input does not have nicely sized packets
Fixes: out of array access
Fixes: 15522/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DNXHD_fuzzer-5747756078989312
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/dnxhd_parser.c')
| -rw-r--r-- | libavcodec/dnxhd_parser.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/dnxhd_parser.c b/libavcodec/dnxhd_parser.c index 31a3158fea..63b4ff89e1 100644 --- a/libavcodec/dnxhd_parser.c +++ b/libavcodec/dnxhd_parser.c @@ -79,8 +79,9 @@ static int dnxhd_find_frame_end(DNXHDParserContext *dctx, if (remaining <= 0) continue; } + remaining += i - 47; dctx->remaining = remaining; - if (buf_size - i + 47 >= dctx->remaining) { + if (buf_size >= dctx->remaining) { pc->frame_start_found = 0; pc->state64 = -1; dctx->cur_byte = 0; |