Linux kernel hotfixes

Simple Linux kernel modules fixing some vulnerabilities, without the need to upgrade or patch kernel.

• msfilter.c – 2.4.25 setsockopt() fix
• munmap.c – 2.4.24 do_munmap() fix
• mremap.c – 2.4.23 mremap() fix
• lcall7fix.c – 2.2.x lcall7 fix
• ptrace.c – Disable ptrace() for regular users