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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/285179">285179</a></dd>
<dt>Author</dt> <dd>cdumez@apple.com</dd>
<dt>Date</dt> <dd>2021-11-02 13:44:33 -0700 (Tue, 02 Nov 2021)</dd>
</dl>

<h3>Log Message</h3>
<pre>Crash under WebPage::sendCOEPCORPViolation()
https://bugs.webkit.org/show_bug.cgi?id=232631
<rdar://84919898>

Reviewed by Alex Christensen.

Add missing null checks for the frame after calling `WebProcess::singleton().webFrame(frameID)`.

* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::sendCOEPPolicyInheritenceViolation):
(WebKit::WebPage::sendCOEPCORPViolation):
(WebKit::WebPage::sendViolationReportWhenNavigatingToCOOPResponse):
(WebKit::WebPage::sendViolationReportWhenNavigatingAwayFromCOOPResponse):</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebKitChangeLog">trunk/Source/WebKit/ChangeLog</a></li>
<li><a href="#trunkSourceWebKitWebProcessWebPageWebPagecpp">trunk/Source/WebKit/WebProcess/WebPage/WebPage.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebKitChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit/ChangeLog (285178 => 285179)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit/ChangeLog    2021-11-02 19:57:41 UTC (rev 285178)
+++ trunk/Source/WebKit/ChangeLog       2021-11-02 20:44:33 UTC (rev 285179)
</span><span class="lines">@@ -1,3 +1,19 @@
</span><ins>+2021-11-02  Chris Dumez  <cdumez@apple.com>
+
+        Crash under WebPage::sendCOEPCORPViolation()
+        https://bugs.webkit.org/show_bug.cgi?id=232631
+        <rdar://84919898>
+
+        Reviewed by Alex Christensen.
+
+        Add missing null checks for the frame after calling `WebProcess::singleton().webFrame(frameID)`.
+
+        * WebProcess/WebPage/WebPage.cpp:
+        (WebKit::WebPage::sendCOEPPolicyInheritenceViolation):
+        (WebKit::WebPage::sendCOEPCORPViolation):
+        (WebKit::WebPage::sendViolationReportWhenNavigatingToCOOPResponse):
+        (WebKit::WebPage::sendViolationReportWhenNavigatingAwayFromCOOPResponse):
+
</ins><span class="cx"> 2021-11-02  Sihui Liu  <sihui_liu@apple.com>
</span><span class="cx"> 
</span><span class="cx">         Terminate unresponsive network process by crashing it
</span></span></pre></div>
<a id="trunkSourceWebKitWebProcessWebPageWebPagecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit/WebProcess/WebPage/WebPage.cpp (285178 => 285179)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit/WebProcess/WebPage/WebPage.cpp       2021-11-02 19:57:41 UTC (rev 285178)
+++ trunk/Source/WebKit/WebProcess/WebPage/WebPage.cpp  2021-11-02 20:44:33 UTC (rev 285179)
</span><span class="lines">@@ -4319,13 +4319,13 @@
</span><span class="cx"> 
</span><span class="cx"> void WebPage::sendCOEPPolicyInheritenceViolation(FrameIdentifier frameID, const SecurityOriginData& embedderOrigin, const String& endpoint, COEPDisposition disposition, const String& type, const URL& blockedURL)
</span><span class="cx"> {
</span><del>-    if (auto* frame = WebProcess::singleton().webFrame(frameID); frame->coreFrame())
</del><ins>+    if (auto* frame = WebProcess::singleton().webFrame(frameID); frame && frame->coreFrame())
</ins><span class="cx">         WebCore::sendCOEPPolicyInheritenceViolation(*frame->coreFrame(), embedderOrigin, endpoint, disposition, type, blockedURL);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebPage::sendCOEPCORPViolation(FrameIdentifier frameID, const SecurityOriginData& embedderOrigin, const String& endpoint, COEPDisposition disposition, FetchOptions::Destination destination, const URL& blockedURL)
</span><span class="cx"> {
</span><del>-    if (auto* frame = WebProcess::singleton().webFrame(frameID); frame->coreFrame())
</del><ins>+    if (auto* frame = WebProcess::singleton().webFrame(frameID); frame && frame->coreFrame())
</ins><span class="cx">         WebCore::sendCOEPCORPViolation(*frame->coreFrame(), embedderOrigin, endpoint, disposition, destination, blockedURL);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -4338,7 +4338,7 @@
</span><span class="cx">     if (Page::nonUtilityPageCount() <= 1)
</span><span class="cx">         return;
</span><span class="cx"> 
</span><del>-    if (auto* frame = WebProcess::singleton().webFrame(frameID); frame->coreFrame())
</del><ins>+    if (auto* frame = WebProcess::singleton().webFrame(frameID); frame && frame->coreFrame())
</ins><span class="cx">         WebCore::sendViolationReportWhenNavigatingToCOOPResponse(*frame->coreFrame(), coop, disposition, coopURL, previousResponseURL, coopOrigin.securityOrigin(), previousResponseOrigin.securityOrigin(), referrer, userAgent);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -4348,7 +4348,7 @@
</span><span class="cx">     if (Page::nonUtilityPageCount() <= 1)
</span><span class="cx">         return;
</span><span class="cx"> 
</span><del>-    if (auto* frame = WebProcess::singleton().webFrame(frameID); frame->coreFrame())
</del><ins>+    if (auto* frame = WebProcess::singleton().webFrame(frameID); frame && frame->coreFrame())
</ins><span class="cx">         WebCore::sendViolationReportWhenNavigatingAwayFromCOOPResponse(*frame->coreFrame(), coop, disposition, coopURL, nextResponseURL, coopOrigin.securityOrigin(), nextResponseOrigin.securityOrigin(), isCOOPResponseNavigationSource, userAgent);
</span><span class="cx"> }
</span><span class="cx"> 
</span></span></pre>
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