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authorMartin Storsjö <martin@martin.st>2013-09-12 12:10:18 +0300
committerMartin Storsjö <martin@martin.st>2013-09-16 11:04:52 +0300
commitac9d159015a88aa2721b271875d18482f713f354 (patch)
tree7411460dc0587108db233576645e8e1ec2c17977
parente90a6846c2c006fbebd00e1f2789f4a86fafacef (diff)
downloadffmpeg-ac9d159015a88aa2721b271875d18482f713f354.tar.gz
proresdec: Properly make sure an index doesn't run past the limit
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 <martin@martin.st>
-rw-r--r--libavcodec/proresdec.c2
1 files changed, 1 insertions, 1 deletions
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);