guix/gnu/packages/patches/libvpx-CVE-2016-2818.patch

Patch contents copied from Mozilla esr45 changeset 312077:7ebfe49f001c

  changeset:   312077:7ebfe49f001c
  user:        Randell Jesup <rjesup@jesup.org>
  Date:        Fri Apr 15 23:11:01 2016 -0400
  summary:     Bug 1263384: validate input frames against configured resolution in vp8 r=rillian, a=ritu,lizzard

  MozReview-Commit-ID: BxDCnJe0mzs

--- libvpx-1.5.0/vp8/vp8_cx_iface.c.orig	2015-11-09 17:12:38.000000000 -0500
+++ libvpx-1.5.0/vp8/vp8_cx_iface.c	2016-06-08 08:48:46.037213092 -0400
@@ -925,11 +925,19 @@
         {
             res = image2yuvconfig(img, &sd);
 
-            if (vp8_receive_raw_frame(ctx->cpi, ctx->next_frame_flag | lib_flags,
-                                      &sd, dst_time_stamp, dst_end_time_stamp))
-            {
-                VP8_COMP *cpi = (VP8_COMP *)ctx->cpi;
-                res = update_error_state(ctx, &cpi->common.error);
+            if (sd.y_width != ctx->cfg.g_w || sd.y_height != ctx->cfg.g_h) {
+                /* from vp8_encoder.h for g_w/g_h:
+                   "Note that the frames passed as input to the encoder must have this resolution"
+                */
+                ctx->base.err_detail = "Invalid input frame resolution";
+                res = VPX_CODEC_INVALID_PARAM;
+            } else {
+                if (vp8_receive_raw_frame(ctx->cpi, ctx->next_frame_flag | lib_flags,
+                                          &sd, dst_time_stamp, dst_end_time_stamp))
+                {
+                    VP8_COMP *cpi = (VP8_COMP *)ctx->cpi;
+                    res = update_error_state(ctx, &cpi->common.error);
+                }
             }
 
             /* reset for next frame */