From b2b12b2d4ab1347e06770bfb4ea1bdf1b1c70527 Mon Sep 17 00:00:00 2001 From: Rostislav Pehlivanov Date: Wed, 13 Jul 2016 23:40:06 +0100 Subject: [PATCH] diracdec: fix maximum quantization index checks Found by Coverity, fixes CID1363961 and CID1363962 Signed-off-by: Rostislav Pehlivanov --- libavcodec/diracdec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index 9275c509cb..dc42a42d86 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -513,7 +513,7 @@ static inline void codeblock(DiracContext *s, SubBand *b, b->quant = quant; } - if (b->quant > DIRAC_MAX_QUANT_INDEX) { + if (b->quant > (DIRAC_MAX_QUANT_INDEX - 1)) { av_log(s->avctx, AV_LOG_ERROR, "Unsupported quant %d\n", b->quant); b->quant = 0; return; @@ -703,7 +703,7 @@ static void decode_subband(DiracContext *s, GetBitContext *gb, int quant, uint8_t *buf2 = b2 ? b2->ibuf + top * b2->stride: NULL; int x, y; - if (quant > DIRAC_MAX_QUANT_INDEX) { + if (quant > (DIRAC_MAX_QUANT_INDEX - 1)) { av_log(s->avctx, AV_LOG_ERROR, "Unsupported quant %d\n", quant); return; }