leviathan
9d88b475c1
The README has been claiming "each module credits the original CVE
reporter and PoC author in its NOTICE.md" since v0.1.0, but only
copy_fail_family actually shipped one. Fixed.
modules/<name>/NOTICE.md (×19 new + 1 existing): per-module
research credit covering CVE ID, discoverer, original advisory
URL where public, upstream fix commit, IAMROOT's role.
iamroot.c: new --dump-offsets subcommand. Resolves kernel offsets
via the existing core/offsets.c four-source chain (env →
/proc/kallsyms → /boot/System.map → embedded table), then emits
a ready-to-paste C struct entry for kernel_table[]. Run once
as root on a target kernel build; upstream via PR. Eliminates
fabricating offsets — every shipped entry traces back to a
`iamroot --dump-offsets` invocation on a real kernel.
docs/OFFSETS.md: documents the --dump-offsets workflow.
CVES.md: notes the NOTICE.md convention + offset dump tool.
iamroot.c: bump IAMROOT_VERSION 0.3.0 → 0.3.1.
1.1 KiB
NOTICE — nft_set_uaf (CVE-2023-32233)
Vulnerability
CVE-2023-32233 — nf_tables anonymous-set deactivation skip →
slab UAF on the freed nft_set object exploitable via msg_msg
cross-cache groom in kmalloc-cg-512.
Research credit
Discovered and disclosed by Patryk Sondej and Piotr Krysiuk, May 2023.
Original advisory + writeup distributed via the OSS-Security list and an accompanying Google Drive PoC. Follow-up exploit and Crusaders-of-Rust analysis built on the public trigger.
Upstream fix: mainline 6.4-rc4 (commit c1592a89942e9, May 2023).
Branch backports: 6.3.2 / 6.2.15 / 6.1.28 / 5.15.111 / 5.10.180 /
5.4.243 / 4.19.283.
IAMROOT role
Hand-rolled nfnetlink batch: NEWTABLE → NEWCHAIN (base, LOCAL_OUT
hook) → NEWSET (ANON|EVAL|CONSTANT) → NEWRULE (nft_lookup
referencing the set by NFTA_LOOKUP_SET_ID) → DELSET → DELRULE
in the same transaction. msg_msg cg-512 spray with IAMROOT_SET
tags.
--full-chain forges a freed-set with set->data = kaddr at the
Sondej/Krysiuk reference offset (0x30) and drives a NEWSETELEM with
the modprobe_path payload bytes via the shared finisher.