← WebKit — 2026-W38
1f5c9bec546e7b2043c1cd3f834a102546525cd4 [SecurityFlags] Read the security flags from memory the child processes cannot write
not a security fix
confidence 0.15
signal score 7.42
Source/WTF/
Classified as not security-relevant.
Triage note: Replaces IPC-based SecurityFlagsDidChange propagation to GPU/Network/Model processes with a mach read-only shared page mapped into child processes (SecurityFlagsSharedPage), adds a layout-hash/magic validation and an attack-test harness. Defense-in-depth architecture change hardening the flag channel; no identified attacker-reachable bug is being fixed, so plumbing/refactor.
This commit was flagged by the signal scorer and reviewed by AI (not a human). It is listed only so the triage is auditable; there is no root-cause analysis because this is not a vulnerability fix.
Triage note: Replaces IPC-based SecurityFlagsDidChange propagation to GPU/Network/Model processes with a mach read-only shared page mapped into child processes (SecurityFlagsSharedPage), adds a layout-hash/magic validation and an attack-test harness. Defense-in-depth architecture change hardening the flag channel; no identified attacker-reachable bug is being fixed, so plumbing/refactor.
This commit was flagged by the signal scorer and reviewed by AI (not a human). It is listed only so the triage is auditable; there is no root-cause analysis because this is not a vulnerability fix.
Structural signals: security_assert (+6.47), null_guard (+1.95), area:Source/WTF/ (+1.0), large_churn (-2.0)
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