The decoder assumes a single bit depth for all the planes while
the specification allows different bit depths for luma and chroma.
Avoid the possible problems described in CVE-2013-2277
---
Check moved when Janne asked, typo removed.
libavcodec/h264.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index f3a47fe..0ddab52 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -2768,6 +2768,12 @@ static int decode_slice_header(H264Context *h,
H264Context *h0){
h->sps.num_units_in_tick, den, 1<<30);
}
+ if (h->sps.bit_depth_luma != h->sps.bit_depth_chroma) {
+ av_log_missing_feature(s->avctx,
+ "Different bit depth between chroma and luma", 1);
+ return AVERROR_PATCHWELCOME;
+ }
+
switch (h->sps.bit_depth_luma) {
case 9 :
if (CHROMA444) {
--
1.8.1.5
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