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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-21 22:27:37 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-03 12:10:23 +0200 |
| commit | 20c0ea160ec7cd71cf766236ccf212ba5883a342 (patch) | |
| tree | e0830301cb5788a7006250f53ae390ece672b759 | |
| parent | 958db2c43895e2cc58eea1203601746519c2e3e8 (diff) | |
| download | ffmpeg-20c0ea160ec7cd71cf766236ccf212ba5883a342.tar.gz | |
avcodec/wmavoice: sanity check block_align
This limit is roughly based on the bitreader limit, its likely a much tighter limit
could be used
Fixes: left shift of 1965039647 by 1 places cannot be represented in type 'int'
Fixes: 19545/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMAVOICE_fuzzer-5695391899320320
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 6847e22c8c85b80bf1d25ec66f77f7ccbcf43aed)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/wmavoice.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/wmavoice.c b/libavcodec/wmavoice.c index 8df67de65b..8c27ed7db8 100644 --- a/libavcodec/wmavoice.c +++ b/libavcodec/wmavoice.c @@ -386,7 +386,7 @@ static av_cold int wmavoice_decode_init(AVCodecContext *ctx) ctx->extradata_size); return AVERROR_INVALIDDATA; } - if (ctx->block_align <= 0) { + if (ctx->block_align <= 0 || ctx->block_align > (1<<22)) { av_log(ctx, AV_LOG_ERROR, "Invalid block alignment %d.\n", ctx->block_align); return AVERROR_INVALIDDATA; } |