diff options
| author | Michael Niedermayer <[email protected]> | 2019-06-21 00:47:17 +0200 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2020-07-01 12:11:55 +0200 |
| commit | 213304972e459148c54c707943748a9062d60f5b (patch) | |
| tree | 2076c4b8d763edd91b35f0c01a2f15ac99d52fde | |
| parent | b1334c774065939f8dc28d00c340f5d245e3968f (diff) | |
avcodec/alsdec: Fix integer overflow with buffer number
Fixes: signed integer overflow: 65313 * 65313 cannot be represented in type 'int'
Fixes: 15290/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-5738074249625600
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
(cherry picked from commit 5f64f6058e0c23641a68ce7dfe47b1f55efd401c)
Signed-off-by: Michael Niedermayer <[email protected]>
| -rw-r--r-- | libavcodec/alsdec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index ddcecdf61e..203d368b85 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -1999,6 +1999,8 @@ static av_cold int decode_init(AVCodecContext *avctx) // allocate quantized parcor coefficient buffer num_buffers = sconf->mc_coding ? avctx->channels : 1; + if (num_buffers * (uint64_t)num_buffers > INT_MAX) // protect chan_data_buffer allocation + return AVERROR_INVALIDDATA; ctx->quant_cof = av_malloc_array(num_buffers, sizeof(*ctx->quant_cof)); ctx->lpc_cof = av_malloc_array(num_buffers, sizeof(*ctx->lpc_cof)); |