The History of a Security Hole
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Re:The History of a Security Hole
by amabito on Saturday February 21, 2026 @08:07PM
(#47106982)
IOPB bit semantics are inverted from what you might expect: 0 means permitted, 1 means denied. So zeroed pcb memory silently grants access to every port in range -- that's why this was consistently reproducible, not flaky. One sizeof() away from correct the whole time.
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Re:The History of a Security Hole
by xoxxala on Wednesday February 25, 2026 @01:14PM
(#47155358)
(2018)
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