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[Exploit Tech Analysis][Heap] Unsafe Unlink / Safe Unlink

bin์—์„œ ์ผ์–ด๋‚˜๋Š” unlink์™€ ์ด๋ฅผ ์•…์šฉํ•œ ๊ณต๊ฒฉ ๊ธฐ๋ฒ•, mitigation๊ณผ ์šฐํšŒ ๋ฐฉ๋ฒ•์„ ์•Œ์•„๋ณด์ž

[Kernel Analysis] MM - Buddy Allocator ๋ถ„์„

Buddy Allocator์˜ order, bitmap, free_list์— ๋Œ€ํ•œ ๊ฐœ๋…๊ณผ ์–ด๋–ป๊ฒŒ ํ• ๋‹น๊ณผ ํ•ด์ œ๊ฐ€ ์ด๋ฃจ์–ด์ง€๋Š”์ง€ ์•Œ์•„๋ณด์ž.