[FFmpeg-devel] [PATCH 2/2] h264: check for invalid bit depth value.

[fenrir at elivagar.org]

From: Laurent Aimar <fenrir at videolan.org>

---
 libavcodec/h264_ps.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/libavcodec/h264_ps.c b/libavcodec/h264_ps.c
index d2c8301..637cf27 100644
--- a/libavcodec/h264_ps.c
+++ b/libavcodec/h264_ps.c
@@ -349,6 +349,11 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){
             sps->residual_color_transform_flag = get_bits1(&s->gb);
         sps->bit_depth_luma   = get_ue_golomb(&s->gb) + 8;
         sps->bit_depth_chroma = get_ue_golomb(&s->gb) + 8;
+        if (sps->bit_depth_luma > 12U || sps->bit_depth_chroma > 12U) {
+            av_log(h->s.avctx, AV_LOG_ERROR, "illegal bit depth value (%d, %d)\n",
+                   sps->bit_depth_luma, sps->bit_depth_chroma);
+            goto fail;
+        }
         sps->transform_bypass = get_bits1(&s->gb);
         decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
     }else{
-- 
1.7.2.5