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SKELETONKEY/core/cve_metadata.c
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modules: add bad_epoll (CVE-2026-46242, "Bad Epoll" epoll teardown race UAF) 
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
2026-07-04 19:35:33 -04:00

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/*
* SKELETONKEY — CVE metadata table
*
* AUTO-GENERATED by tools/refresh-cve-metadata.py from
* docs/CVE_METADATA.json. Do not hand-edit; rerun the script.
* Sources: CISA KEV catalog + NVD CVE API 2.0.
*/
#include "cve_metadata.h"
#include <stddef.h>
#include <string.h>
const struct cve_metadata cve_metadata_table[] = {
{
.cve = "CVE-2016-5195",
.cwe = "CWE-362",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2022-03-03",
},
{
.cve = "CVE-2017-7308",
.cwe = "CWE-681",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2018-14634",
.cwe = "CWE-190",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2026-01-26",
},
{
.cve = "CVE-2019-13272",
.cwe = NULL,
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2021-12-10",
},
{
.cve = "CVE-2019-14287",
.cwe = "CWE-755",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2020-14386",
.cwe = "CWE-250",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2020-29661",
.cwe = "CWE-416",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2021-22555",
.cwe = "CWE-787",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2025-10-06",
},
{
.cve = "CVE-2021-3156",
.cwe = "CWE-193",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2022-04-06",
},
{
.cve = "CVE-2021-33909",
.cwe = "CWE-190",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2021-3493",
.cwe = "CWE-270",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2022-10-20",
},
{
.cve = "CVE-2021-4034",
.cwe = "CWE-787",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2022-06-27",
},
{
.cve = "CVE-2022-0185",
.cwe = "CWE-190",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2024-08-21",
},
{
.cve = "CVE-2022-0492",
.cwe = "CWE-287",
.attack_technique = "T1611",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2026-06-02",
},
{
.cve = "CVE-2022-0847",
.cwe = "CWE-665",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2022-04-25",
},
{
.cve = "CVE-2022-25636",
.cwe = "CWE-269",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2022-2588",
.cwe = "CWE-416",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2023-0179",
.cwe = "CWE-190",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2023-0386",
.cwe = "CWE-282",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2025-06-17",
},
{
.cve = "CVE-2023-0458",
.cwe = "CWE-476",
.attack_technique = "T1082",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2023-2008",
.cwe = "CWE-129",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2023-22809",
.cwe = "CWE-269",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2023-32233",
.cwe = "CWE-416",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2023-3269",
.cwe = "CWE-416",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2023-4622",
.cwe = "CWE-416",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2024-1086",
.cwe = "CWE-416",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2024-05-30",
},
{
.cve = "CVE-2024-26581",
.cwe = NULL,
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2024-50264",
.cwe = "CWE-416",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2025-32462",
.cwe = "CWE-863",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2025-32463",
.cwe = "CWE-829",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = true,
.kev_date_added = "2025-09-29",
},
{
.cve = "CVE-2025-6019",
.cwe = "CWE-250",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2026-23111",
.cwe = "CWE-416",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2026-31635",
.cwe = "CWE-130",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2026-41651",
.cwe = "CWE-367",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2026-43494",
.cwe = NULL,
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2026-46242",
.cwe = "CWE-416",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2026-46243",
.cwe = "CWE-20",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2026-46300",
.cwe = "CWE-787",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
{
.cve = "CVE-2026-46333",
.cwe = "CWE-269",
.attack_technique = "T1068",
.attack_subtechnique = NULL,
.in_kev = false,
.kev_date_added = "",
},
};
const size_t cve_metadata_table_len =
sizeof(cve_metadata_table) / sizeof(cve_metadata_table[0]);
const struct cve_metadata *cve_metadata_lookup(const char *cve)
{
if (!cve) return NULL;
for (size_t i = 0; i < cve_metadata_table_len; i++) {
if (strcmp(cve_metadata_table[i].cve, cve) == 0)
return &cve_metadata_table[i];
}
return NULL;
}
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