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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-19 19:18:18 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:49:26 +0200 |
| commit | 3ed8549b5d8759431a44591cdcda877f6f09a4e6 (patch) | |
| tree | 8d13c513a5da3aec2b7981d4fe9058e45edac894 | |
| parent | 1cff89a11fa051696109565b3bf88c94479374eb (diff) | |
| download | ffmpeg-3ed8549b5d8759431a44591cdcda877f6f09a4e6.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 0f50bbd480..1d93c9ae8f 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); } |