KaraZajac
95589e26cb
release / build (arm64) (push) Waiting to run
release / build (x86_64) (push) Waiting to run
release / build (x86_64-static / musl) (push) Waiting to run
release / build (arm64-static / musl) (push) Waiting to run
release / release (push) Blocked by required conditions
Jaeyoung Chung's kernelCTF "Bad Epoll": a race-condition use-after-free in fs/eventpoll.c. ep_remove() clears file->f_ep under f_lock but keeps using the file (hlist_del_rcu + unlock) while a concurrent __fput() frees the still-referenced struct eventpoll. Reachable by any unprivileged user with no userns / CONFIG / capability; weaponised via cross-cache to a struct file, /proc/self/fdinfo arb-read, and ROP. Introduced 58c9b016e128 (6.4), fixed a6dc643c6931 (7.1-rc1), stable backport 7.0.13. CWE-416; not in KEV. The corpus's first epoll / VFS-teardown module. Shipped as a reconstructed, deliberately under-driven trigger on the stackrot / nft_catchall contract: detect() is a pure version gate (>= 6.4 and below the on-branch fix; no userns precondition -- epoll needs none); exploit() forks a CPU-pinned child that exercises the ep_remove-vs-__fput close window a hard-bounded 48 attempts / 2s and returns EXPLOIT_FAIL. It does not grind the race to a win, does not do the cross-cache reclaim, and does not bundle the fdinfo R/W + ROP (a won race frees a live struct file and rarely trips KASAN -> silent-corruption risk). Wired: registry, Makefile, safety rank (12 -- lowest in the corpus; a kernel race is the least predictable class), 5 detect() test rows (version gating), CVE metadata (sorted insert, CWE-416 / T1068 / not-KEV), README + CVES.md + website counts (44/39), RELEASE_NOTES v0.9.12, and a verify-vm target (sweep pending). Detection rules are intentionally weak/structural (epoll ubiquitous, rarely KASAN) -- post-exploitation euid-0 transition, no yara. Also corrects pre-existing README drift in the "not yet verified" count (8 -> 11). Not VM-verified, so the verified count stays 28 of 39. Version 0.9.12. Credit: Jaeyoung Chung (J-jaeyoung). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01KUq4DGXSPBmPkAyJ9WnM9n
60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
/*
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* SKELETONKEY — canonical "register every module family" enumeration.
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*
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* Kept in its own translation unit so registry.c stays standalone:
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* the kernel_range unit-test binary links registry.c (for the basic
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* register / count / find API) without pulling in every module's
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* symbol. The main binary and detect-integration test link this
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* file too and get the full lineup.
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*
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* Adding a new module is one new register_<family>() declaration in
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* registry.h plus one call below — the integration test picks it up
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* via skeletonkey_register_all_modules() in its main().
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*/
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#include "registry.h"
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void skeletonkey_register_all_modules(void)
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{
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skeletonkey_register_copy_fail_family();
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skeletonkey_register_dirty_pipe();
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skeletonkey_register_entrybleed();
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skeletonkey_register_pwnkit();
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skeletonkey_register_nf_tables();
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skeletonkey_register_overlayfs();
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skeletonkey_register_cls_route4();
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skeletonkey_register_dirty_cow();
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skeletonkey_register_ptrace_traceme();
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skeletonkey_register_netfilter_xtcompat();
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skeletonkey_register_af_packet();
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skeletonkey_register_fuse_legacy();
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skeletonkey_register_stackrot();
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skeletonkey_register_af_packet2();
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skeletonkey_register_cgroup_release_agent();
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skeletonkey_register_overlayfs_setuid();
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skeletonkey_register_nft_set_uaf();
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skeletonkey_register_af_unix_gc();
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skeletonkey_register_nft_fwd_dup();
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skeletonkey_register_nft_payload();
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skeletonkey_register_sudo_samedit();
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skeletonkey_register_sequoia();
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skeletonkey_register_sudoedit_editor();
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skeletonkey_register_vmwgfx();
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skeletonkey_register_dirtydecrypt();
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skeletonkey_register_fragnesia();
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skeletonkey_register_pack2theroot();
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skeletonkey_register_sudo_chwoot();
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skeletonkey_register_udisks_libblockdev();
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skeletonkey_register_pintheft();
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skeletonkey_register_mutagen_astronomy();
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skeletonkey_register_sudo_runas_neg1();
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skeletonkey_register_tioscpgrp();
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skeletonkey_register_vsock_uaf();
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skeletonkey_register_nft_pipapo();
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skeletonkey_register_ptrace_pidfd();
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skeletonkey_register_sudo_host();
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skeletonkey_register_cifswitch();
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skeletonkey_register_nft_catchall();
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skeletonkey_register_bad_epoll();
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}
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