← WebKit Silent-Fix Report — 2026-W21
69d300842d [iOS] Possible WebPreferences null deref under PageClientImpl::didCommitLoadForMainFrame() during WKWebView dealloc
severity low
class UAF
confidence 0.42
WebKit UIProcess iOS
Primitive: null WKWebView deref during didCommitLoad
Triage note: Guards a possible null-webView deref during commit; defensive crash fix with limited exploitability.
Triage note: Guards a possible null-webView deref during commit; defensive crash fix with limited exploitability.
Security-relevant, below the exploitable-grade bar for a full root-cause writeup. The triage verdict is above; the side-by-side patch is below.
Before / after
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