CVE-2026-23111

CVE-2026-23111 PoC Linuxカーネル nftablesのUse-After-Free（ローカル権限昇格） poc by baba01hacker 脆弱性の概要 CVE : CVE-2026-23111 タイプ : Use-After-Free CWE-416 CVSS : 7.8 HIGH コンポーネント : net/netfilter/nftablesapi.c — nftmapcatchallactivate 根本原因 : 反転したgenmaskチェックにより、トランザクションアボート中にチェーン参照カウンタがリークする 影響を受けるカーネルバージョン...

CVE-2026-23111-POC-noddlenpottato

CVE-2026-23111 — noddlenpottato nftables catchall UAF → 비특권 LPE. 대부분의 5.10—6.18 리눅스 커널에서 일반 사용자가 root 권한을 획득합니다. 타깃 커널에 자동으로 적응합니다 — struct 오프셋을 탐지하고, 심볼을 해석하고, ROP 가젯을 찾고, slab 캐시를 결정하며, 맞춤형 익스플로잇을 생성해 컴파일하고 실행합니다. 익스플로잇 체인 개요 slab 재확보 전략 취약점 nftmapcatchallactivatenet/netfilter/nftablesapi.c에서 역...

kernel: Kernel: Privilege escalation or denial of service in nf_tables via inverted element activity check

A flaw was found in the Linux kernel's nftables component. A logic bug in nftmapcatchallactivate causes an inverted element activity check during the abort path of a failed transaction. This can lead to a use-after-free vulnerability, as catchall verdict elements may still reference a freed chain...

kernel: Kernel: Privilege escalation or denial of service in nf_tables via inverted element activity check

A flaw was found in the Linux kernel's nftables component. A logic bug in nftmapcatchallactivate causes an inverted element activity check during the abort path of a failed transaction. This can lead to a use-after-free vulnerability, as catchall verdict elements may still reference a freed chain...

Astra Linux – Vulnerability in Linux 5.15

A memory leak flaw was discovered in nftsetcatchallflush in net/netfilter/nftablesapi.c within the Linux Kernel. This issue may allow a local attacker to cause double-deactivation of catchall elements, which can lead to a memory leak...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables: Fixed an inverted element activity check in nftmapcatchallactivate. nftmapcatchallactivate includes an inverted element activity check compared to its non-catchall counterpart, nftmapelemactivate, and...

SUSE CVE-2026-72320

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftlookup: fix catchall element handling with inverted lookups nftlookupeval decides whether a lookup matched found from the direct set lookup and priv-invert before falling back to the catchall element used by interva...

AZL-96594 CVE-2026-72320 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftlookup: fix catchall element handling with inverted lookups nftlookupeval decides whether a lookup matched found from the direct set lookup and priv-invert before falling back to the catchall element used by interva...

CVE-2026-72320

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftlookup: fix catchall element handling with inverted lookups nftlookupeval decides whether a lookup matched found from the direct set lookup and priv-invert before falling back to the catchall element used by interva...

EUVD-2026-59219

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftlookup: fix catchall element handling with inverted lookups nftlookupeval decides whether a lookup matched found from the direct set lookup and priv-invert before falling back to the catchall element used by interva...

CVE-2026-72320

CVE-2026-72320 concerns the Linux kernel netfilter implementation for nft_lookup. The issue arises in how inverted lookups (NFT_LOOKUP_F_INV) interact with the catchall element in interval sets, potentially causing an incorrect verdict. The documented fix folds the catchall lookup into ext before...

CVE-2026-72320 netfilter: nft_lookup: fix catchall element handling with inverted lookups

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftlookup: fix catchall element handling with inverted lookups nftlookupeval decides whether a lookup matched found from the direct set lookup and priv-invert before falling back to the catchall element used by interva...

PT-2026-72508

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft lookup: fix catchall element handling with inverted lookups nft lookup eval decides whether a lookup matched found from the direct set lookup and priv-invert before falling back to the catchall element used by...

SUSE SLES15 Security Update : kernel (Live Patch 18 for SUSE Linux Enterprise 15 SP6) (SUSE-SU-2026:2588-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2588-1 advisory. This update for the SUSE Linux Enterprise Kernel 6.4.0-150600.23.81 fixes various security issues The following security issues were fixed: -...

SUSE-SU-2026:22385-1 Security update for the Linux Kernel (Live Patch 2 for SUSE Linux Enterprise 16)

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.7.1 fixes various security issues The following security issues were fixed: - CVE-2026-23278: netfilter: nftables: always walk all pending catchall elements bsc1260907. - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay...

SUSE-SU-2026:22390-1 Security update for the Linux Kernel (Live Patch 3 for SUSE Linux Enterprise 16)

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.8.1 fixes various security issues The following security issues were fixed: - CVE-2026-23278: netfilter: nftables: always walk all pending catchall elements bsc1260907. - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay...

SUSE-SU-2026:22387-1 Security update for the Linux Kernel (Live Patch 6 for SUSE Linux Enterprise 16)

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.27.1 fixes various security issues The following security issues were fixed: - CVE-2026-23278: netfilter: nftables: always walk all pending catchall elements bsc1260907. - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay...

SUSE-SU-2026:22409-1 Security update for the Linux Kernel RT (Live Patch 18 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-40.1 fixes various security issues The following security issues were fixed: - CVE-2026-23278: netfilter: nftables: always walk all pending catchall elements bsc1260907. - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache...

SUSE-SU-2026:22480-1 Security update for the Linux Kernel RT (Live Patch 10 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-34.1 fixes various security issues The following security issues were fixed: - CVE-2026-23278: netfilter: nftables: always walk all pending catchall elements bsc1260907. - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache...

SUSE-SU-2026:22467-1 Security update for the Linux Kernel (Live Patch 14 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-38.1 fixes various security issues The following security issues were fixed: - CVE-2026-23278: netfilter: nftables: always walk all pending catchall elements bsc1260907. - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache...