← WebKit Silent-Fix Report — 2026-W25

ce27a48eff  AX: missing null check of WeakPtr ancestorCache in AccessibilityScrollView

severity low class LogicError confidence 0.50 WebCore Accessibility
Dominic Mazzoni Thu Jun 18 09:38:06 2026 -0700 full: ce27a48eff723793df39a98f323ce015ee9b62e6 bug report ↗ view on GitHub ↗
Primitive: null WeakPtr dereference (crash)
Triage note: Genuine missing null-check on a WeakPtr that was dereferenced, a null-deref crash fix.

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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