Fixes CVE-2012-2791.
CC: [email protected]
---
libavcodec/ivi_common.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavcodec/ivi_common.c b/libavcodec/ivi_common.c
index 9b81094..76782e5 100644
--- a/libavcodec/ivi_common.c
+++ b/libavcodec/ivi_common.c
@@ -460,6 +460,11 @@ static int ivi_decode_blocks(GetBitContext *gb,
IVIBandDesc *band, IVITile *tile
}
if (cbp & 1) { /* block coded ? */
+ if (!band->scan) {
+ av_log(avctx, AV_LOG_ERROR, "Scan pattern is not set.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
scan_pos = -1;
memset(trvec, 0, num_coeffs*sizeof(trvec[0])); /* zero
transform vector */
memset(col_flags, 0, sizeof(col_flags)); /* zero column
flags */
--
1.7.10.4
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