RESOLVED FIXED313507
[Site Isolation] Add Page ownership checks to BackForwardCache get() and take() 
https://bugs.webkit.org/show_bug.cgi?id=313507
Summary [Site Isolation] Add Page ownership checks to BackForwardCache get() and take()
Basuke Suzuki
Reported 2026-04-27 18:42:08 PDT
BackForwardCache::get() and take() can return a CachedPage belonging to a different Page when multiple WebPages in the same process share a BackForwardFrameItemIdentifier (e.g., during multi-process BFCache with Site Isolation). Add Page ownership checks so mismatched entries are rejected. Also add CachedFrame RemoteFrame support and Page-aware BFCache check in continueLoadAfterNavigationPolicy.
Attachments
Add attachment proposed patch, testcase, etc.
Basuke Suzuki
Comment 1 2026-04-27 18:44:31 PDT
rdar://175721231
Basuke Suzuki
Comment 2 2026-04-28 09:54:13 PDT
Pull request: https://github.com/WebKit/WebKit/pull/63799
EWS
Comment 3 2026-04-28 16:32:26 PDT
Committed 312248@main (0dad921c8a6b): <https://commits.webkit.org/312248@main> Reviewed commits have been landed. Closing PR #63799 and removing active labels.
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