libvpx7: patch CVE-2023-5217.

srcpkgs/libvpx7/patches/CVE-2023-5217.patch

@@ -0,0 +1,27 @@
+From 3fbd1dca6a4d2dad332a2110d646e4ffef36d590 Mon Sep 17 00:00:00 2001
+From: James Zern <jzern@google.com>
+Date: Mon, 25 Sep 2023 18:55:59 -0700
+Subject: [PATCH] VP8: disallow thread count changes
+
+Currently allocations are done at encoder creation time. Going from
+threaded to non-threaded would cause a crash.
+
+Bug: chromium:1486441
+Change-Id: Ie301c2a70847dff2f0daae408fbef1e4d42e73d4
+
+diff --git a/vp8/encoder/onyx_if.c b/vp8/encoder/onyx_if.c
+index c65afc643bf..c5e9970c3cc 100644
+--- a/vp8/encoder/onyx_if.c
++++ b/vp8/encoder/onyx_if.c
+@@ -1447,6 +1447,11 @@ void vp8_change_config(VP8_COMP *cpi, VP8_CONFIG *oxcf) {
+   last_h = cpi->oxcf.Height;
+   prev_number_of_layers = cpi->oxcf.number_of_layers;
+
++  if (cpi->initial_width) {
++    // TODO(https://crbug.com/1486441): Allow changing thread counts; the
++    // allocation is done once in vp8_create_compressor().
++    oxcf->multi_threaded = cpi->oxcf.multi_threaded;
++  }
+   cpi->oxcf = *oxcf;
+
+   switch (cpi->oxcf.Mode) {

srcpkgs/libvpx7/template

@@ -3,7 +3,7 @@
 # have fun rebuilding everything
 pkgname=libvpx7
 version=1.11.0
-revision=1
+revision=2
 hostmakedepends="perl yasm"
 short_desc="VP8 and VP9 video codec"
 maintainer="Orphaned <orphan@voidlinux.org>"