There are 32 maximum decomposition levels, thus 33 resolution levels.
---
libavcodec/jpeg2000dec.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c
index 8c49ea9..26c2cfc 100644
--- a/libavcodec/jpeg2000dec.c
+++ b/libavcodec/jpeg2000dec.c
@@ -251,7 +251,11 @@ static int get_cox(Jpeg2000DecoderContext *s,
Jpeg2000CodingStyle *c)
if (s->buf_end - s->buf < 5)
return AVERROR(EINVAL);
- c->nreslevels = bytestream_get_byte(&s->buf) + 1; // num of resolution
levels - 1
+ // num of resolution levels - 1
+ c->nreslevels = bytestream_get_byte(&s->buf) + 1;
+
+ if (c->nreslevels > JPEG2000_MAX_RESLEVELS)
+ return AVERROR_INVALIDDATA;
/* compute number of resolution levels to decode */
if (c->nreslevels < s->reduction_factor)
--
1.8.2.1
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