Security & CTF related stuff.https://qyn.app/https://qyn.app/blog/sekaictf-2026-3in1/https://qyn.app/blog/sekaictf-2026-3in1/A full-chain SEKAICTF 2026 challenge covering Ladybird, a QEMU LPE, and a QEMU escape.Mon, 29 Jun 2026 00:00:00 GMThttps://qyn.app/blog/sekaictf-2026-mikus-trapped-exception/https://qyn.app/blog/sekaictf-2026-mikus-trapped-exception/Writeup coming soon.Mon, 08 Jun 2026 00:00:00 GMThttps://qyn.app/blog/cve-2023-3389-linkedpoll/https://qyn.app/blog/cve-2023-3389-linkedpoll/Exploiting a vulnerability in the io_uring subsystem of the Linux kernel.Tue, 01 Aug 2023 18:00:00 GMT