From 037422178d7f1d0dd09e1ce424dd61a69e77668b Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 8 Sep 2016 22:02:44 +0200 Subject: [PATCH] avcodec/alsdec: Fix reading 0 mantisse bits Fixes assertion failure Fixes: 848c24abc1721c9e3d1ba7bfee8d9fcc/asan_heap-oob_1d99eca_3709_567bba70d67e7d62714dcf56f26fb1da.mp4 Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer --- libavcodec/alsdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index 1bb71f5a47..8c4ff53617 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -1527,7 +1527,7 @@ static int read_diff_float_data(ALSDecContext *ctx, unsigned int ra_frame) { if (!get_bits1(gb)) { //uncompressed for (i = 0; i < frame_length; ++i) { if (ctx->raw_samples[c][i] != 0) { - raw_mantissa[c][i] = get_bits(gb, nbits[i]); + raw_mantissa[c][i] = nbits[i] ? get_bits(gb, nbits[i]) : 0; } } } else { //compressed