avcodec/adpcm: Fix adpcm_ima_wav padding

Fixes out of array read Fixes: f29f134ea5f5590df554a7733294a587/asan_stack-oob_309d14e_9188_ea01743d6355aff20530f3d4cdaa841a.wav Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago · f2a9a30fd6
parent 2624695484
commit f2a9a30fd6
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@ -803,7 +803,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
        if (avctx->bits_per_coded_sample != 4) {
            int samples_per_block = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
            int block_size = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
-            uint8_t temp[20] = { 0 };
+            uint8_t temp[20 + AV_INPUT_BUFFER_PADDING_SIZE] = { 0 };
            GetBitContext g;

            for (n = 0; n < (nb_samples - 1) / samples_per_block; n++) {