tor-browser

commit 9e27f248e2345d7ea8eb91c748ca5e97d605e870
parent 2e9363e66390ed1c7c8e36e35ee69400767a96dd
Author: Simon Farre <simon.farre.cx@gmail.com>
Date:   Tue,  9 Dec 2025 20:12:17 +0000

Bug 2004902 - Make Frame busting check pass for history load r=dom-core,farre

This is the bug exposed via usage of reddit where STR was
- click on post
- go back (frame busting check will fail silently)
- click on same post (assertion triggers)

Believed to be responsible for the majority of the assertions in
https://bugzilla.mozilla.org/show_bug.cgi?id=1999518

Differential Revision: https://phabricator.services.mozilla.com/D275586

Diffstat:
M
docshell/base/BrowsingContext.cpp
 | 
4
++++

1 file changed, 4 insertions(+), 0 deletions(-)
diff --git a/docshell/base/BrowsingContext.cpp b/docshell/base/BrowsingContext.cpp
@@ -2038,6 +2038,10 @@ nsresult BrowsingContext::CheckFramebusting(nsDocShellLoadState* aLoadState) {
     return NS_OK;
   }
 
+  if (XRE_IsParentProcess()) {
+    return NS_OK;
+  }
+
   // Only applies to top-level navigations.
   if (!IsTop()) {
     return NS_OK;