add CVE-2025-40019_lts_cos_mitigation#32
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- Rewrite exploit.md with detailed vulnerability description, chained SGL technique (first_rsgl → second_rsgl → tsgl), outlen=0 trick, ctl_buf spray mechanism, and scatterwalk_ffwd traversal explanation - Document 0x9c000 (trampoline_pgd) first-pass PTE with link to CVE-2023-6560 exploit documentation for reference - Update exploit.c comments across all targets to match documentation - Remove unused SO_RCVBUF setsockopt on authenc socket
- Add PAGE_SIZE, SCATTERLIST_OFFS_*, PHYS_ADDR_ALIGN_MASK defines - Extract create_aead_tfmfd() helper to deduplicate AEAD socket setup - Make data_buf, unix_sockfd, authenc_opfd local instead of global - Use named constants instead of magic numbers throughout - Add clarifying comments for volatile, root_payload, slab ordering - Remove dead code after while(1) sleep(1)
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