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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-19 19:18:18 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-01-06 11:30:43 +0100 |
| commit | a705362dbdd09d1cf82edcd6c28c0ecc75c849c3 (patch) | |
| tree | 133389d5be663c4f6863f9aef2aedd8e1b46f27a | |
| parent | a0c91fb0f0641f9f35f650281a176657907097cf (diff) | |
| download | ffmpeg-a705362dbdd09d1cf82edcd6c28c0ecc75c849c3.tar.gz | |
avcodec/wmalosslessdec: Check block_align
Fixes: NULL pointer dereference
Fixes: 18331/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5652847445671936
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c1c799271eefb8afe22804a710baa5cbaad57d91)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/wmalosslessdec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c index eb1db615ae..19bac949d4 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -184,8 +184,8 @@ static av_cold int decode_init(AVCodecContext *avctx) unsigned int channel_mask; int i, log2_max_num_subframes; - if (!avctx->block_align) { - av_log(avctx, AV_LOG_ERROR, "block_align is not set\n"); + if (avctx->block_align <= 0) { + av_log(avctx, AV_LOG_ERROR, "block_align is not set or invalid\n"); return AVERROR(EINVAL); } |