Fixes: signed integer overflow: -3447 * 2883584 cannot be represented in type 'int' Fixes: 15265/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BINK_fuzzer-5088311799971840
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/bink.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libavcodec/bink.c b/libavcodec/bink.c index 8392bbeeb0..d18c0ceae4 100644 --- a/libavcodec/bink.c +++ b/libavcodec/bink.c @@ -702,15 +702,15 @@ static int read_dct_coeffs(BinkContext *c, GetBitContext *gb, int32_t block[64], return quant_idx; } -static void unquantize_dct_coeffs(int32_t block[64], const int32_t quant[64], +static void unquantize_dct_coeffs(int32_t block[64], const uint32_t quant[64], int coef_count, int coef_idx[64], const uint8_t *scan) { int i; - block[0] = (block[0] * quant[0]) >> 11; + block[0] = (int)(block[0] * quant[0]) >> 11; for (i = 0; i < coef_count; i++) { int idx = coef_idx[i]; - block[scan[idx]] = (block[scan[idx]] * quant[idx]) >> 11; + block[scan[idx]] = (int)(block[scan[idx]] * quant[idx]) >> 11; } } -- 2.21.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
