segfault fix

Originally committed as revision 5178 to svn://svn.ffmpeg.org/ffmpeg/trunk
19 years ago · e70e7a4b17
parent b0e6636b2d
commit e70e7a4b17
1 changed files with 3 additions and 0 deletions
--- a/libavcodec/huffyuv.c
+++ b/libavcodec/huffyuv.c
@ -808,6 +808,9 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
            return -1;
    }

+    if((unsigned)(buf_size-table_size) >= INT_MAX/8)
+        return -1;
+
    init_get_bits(&s->gb, s->bitstream_buffer+table_size, (buf_size-table_size)*8);

    fake_ystride= s->interlaced ? p->linesize[0]*2  : p->linesize[0];