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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-19 01:30:53 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-01-06 11:30:42 +0100 |
| commit | 4e3e2788da900b7e629d7d67e3d2ac7917abc3d0 (patch) | |
| tree | 3b10e2a06ac0f130fe4b594bd3015bf6a31b0a25 | |
| parent | 600675e11b47125dcfeedeb4c9a672623b53bd2f (diff) | |
| download | ffmpeg-4e3e2788da900b7e629d7d67e3d2ac7917abc3d0.tar.gz | |
avcodec/alsdec: Fix integer overflow in decode_var_block_data()
Fixes: signed integer overflow: 1927975249 - -514719744 cannot be represented in type 'int'
Fixes: 16413/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-5651206856245248
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Thilo Borgmann <thilo.borgmann@mail.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 661a9b274b0181b2e36ff21fd13840f35992bea6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/alsdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index 1fdd0cb0fe..11bbd38f58 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -951,7 +951,7 @@ static int decode_var_block_data(ALSDecContext *ctx, ALSBlockData *bd) // reconstruct difference signal for prediction (joint-stereo) if (bd->js_blocks && bd->raw_other) { - int32_t *left, *right; + uint32_t *left, *right; if (bd->raw_other > raw_samples) { // D = R - L left = raw_samples; |