add CVE-2026-22693

Signed-off-by: ZacohZhen <kouzhenrong@h-partners.com>

CVE-2026-22693.patch

@@ -0,0 +1,15 @@
+diff --git a/src/hb-ot-cmap-table.hh b/src/hb-ot-cmap-table.hh
+index eaba5d2..c73f990 100644
+--- a/src/hb-ot-cmap-table.hh
++++ b/src/hb-ot-cmap-table.hh
+@@ -1683,6 +1683,10 @@ struct SubtableUnicodesCache {
+   {
+     SubtableUnicodesCache* cache =
+         (SubtableUnicodesCache*) hb_malloc (sizeof(SubtableUnicodesCache));
++
++    if (unlikely(!cache))
++        return nullptr;
++
+     new (cache) SubtableUnicodesCache (source_table);
+     return cache;
+   }

install.py

@@ -53,7 +53,8 @@ def apply_patch(patch_file, target_dir):
 
 def do_patch(target_dir):
     patch_file = [
-        "huawei_harfbuzz.patch"
+        "huawei_harfbuzz.patch",
+        "CVE-2026-22693.patch"
     ]
 
     for patch in patch_file: