From ac9d159015a88aa2721b271875d18482f713f354 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Martin=20Storsj=C3=B6?= Date: Thu, 12 Sep 2013 12:10:18 +0300 Subject: [PATCH] proresdec: Properly make sure an index doesn't run past the limit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If idx equaled num_coeffs - 1 on entry to the loop, the previous check failed to break out of the loop. Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org Signed-off-by: Martin Storsjö --- libavcodec/proresdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/proresdec.c b/libavcodec/proresdec.c index c13b76969b..c3b480f18d 100644 --- a/libavcodec/proresdec.c +++ b/libavcodec/proresdec.c @@ -496,7 +496,7 @@ static void unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs, dst[idx++] = alpha_val >> 6; else dst[idx++] = (alpha_val << 2) | (alpha_val >> 6); - if (idx == num_coeffs - 1) + if (idx >= num_coeffs - 1) break; } while (get_bits1(gb)); val = get_bits(gb, 4);