37-Year-Old OpenBSD Kernel Flaw Lets Attackers Gain Root Access – PoC Released
A newly disclosed OpenBSD kernel exploitation chain combines a shared memory accounting flaw with a separate out-of-bounds write to obtain root privileges. Published on October 16, 2026, the research, titled “Big Fish,” includes public proof-of-concept code demonstrating exploitation despite several enabled security protections. The oldest flaw involves a shared-memory attachment counter inherited from BSD code […] The post 37-Year-Old OpenBSD Kernel Flaw Lets Attackers Gain Root Access – PoC Released appeared first on Cyber Security News .