docs(pwn/kernel): refresh usermodehelper notes; add core_pattern priv-esc #966
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This PR makes few modifications to traditional privilege escalation methods in Linux kernel:
call_usermodehelpernotes (manly aboutCONFIG_STATIC_USERMODEHELPER).modprobe_pathtriggers for newer kernels (6.12+).core_patternmodification which is commonly used in kCTF exploits in recent years.