freebsd-ports/multimedia/ffmpeg/files/patch-libavcodec__utils.c
Mario Sergio Fujikawa Ferreira 02842e9ddf o Fix FFmpeg libavcodec Buffer Overflow Vulnerability advisory:
http://secunia.com/advisories/17892/

o Patch can be found at:

  http://article.gmane.org/gmane.comp.video.ffmpeg.devel/26558

o Bump PORTREVISION

Submitted by:	Simon Kilvington <s.kilvington@eris.qinetiq.com> (patch)
Prompted by:	marcus
2005-12-06 20:06:50 +00:00

19 lines
641 B
C

--- libavcodec/utils.c.orig Tue Dec 6 17:51:14 2005
+++ libavcodec/utils.c Tue Dec 6 17:53:17 2005
@@ -249,6 +249,16 @@
const int h_shift= i==0 ? 0 : h_chroma_shift;
const int v_shift= i==0 ? 0 : v_chroma_shift;
+ if(s->pix_fmt == PIX_FMT_PAL8 && i == 1)
+ {
+ buf->base[i] = av_malloc(256 * 4);
+ if(buf->base[i] == NULL)
+ return -1;
+ buf->data[i] = buf->base[i];
+ continue;
+ }
+
+
//FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
buf->linesize[i]= ALIGN(pixel_size*w>>h_shift, s_align<<(h_chroma_shift-h_shift));