CVE-2026-43284

🚨 CVE-2026-43284 - Dirty Frag 🚨 Universal Linux Kernel Local Privilege Escalation 📋 Overview Dirty Frag also known as Copy Fail 2 is a high-impact local privilege escalation vulnerability in the Linux kernel. It allows an unprivileged local user to obtain root privileges on affected systems...

dirtyfrag

Dirty Frag: Universal Linux LPE Abstract This document describes the Dirty Frag vulnerability class, first discovered and reported by Hyunwoo Kim @v4bel, which can obtain root privileges on major Linux distributions by chaining the xfrm-ESP Page-Cache Write CVE-2026-43284 vulnerability and the...

cve_2026_31431

CVE-2026-31431 "Copy Fail" Toolkit Detector and proof-of-concept LPE for the Linux algifaead / authencesn page-cache scratch-write bug disclosed 2026-04-29. Disclosure writeup: https://xint.io/blog/copy-fail-linux-distributions Authorization Use only on hosts you own or are explicitly engaged to...

CVE-2026-46300

🛡️ CVE-2026-46300 - Fragnesia A Clean & Deadly Page-Cache Attack Variant of the "Dirty Frag" family 📌 Overview CVE-2026-46300 Fragnesia is a high-severity logic flaw in the Linux kernel's socket buffer handling skbtrycoalesce within the XFRM/ESP-in-TCP subsystem espintcp ULP. An unprivileged local...

DIRTY-FRAG-Detection-with-Wazuh-4.14.4

DIRTY FRAG Detection with Wazuh 4.14.4 - CVE-2026-43284 / CVE-2026-43500 Detection engineering for the Dirty Frag kernel LPE - Ubuntu / RHEL / Debian / Amazon Linux What is Dirty Frag? CVE-2026-43284 / CVE-2026-43500 is a Linux kernel Local Privilege Escalation LPE that chains two independent...

CVE-2026-43284-DirtyFrag-PoC

CVE-2026-43284 — 4-byte XFRM/ESP Proof-of-concept local privilege escalation via XFRM/ESP page-cache corruption 4-byte write primitive · 48 iterations · 192-byte ELF overwrite · unprivileged user + netns Proof of concept Left: kernel preflight, setuid scan, and exploit chain · Right: root shell...

CVE-2026-43284

Dirty Frag: Universal Linux LPE Abstract This document explains the Dirty Frag vulnerability class, discovered and reported by Hyunwoo Kim @v4bel. By chaining xfrm-ESP Page-Cache Write CVE-2026-43284 with RxRPC Page-Cache Write CVE-2026-43500, an attacker can escalate to root on major Linux...

dirty_frag_mitigation

dirtyfragmitigation 1. A bash script for mitigating linux dirty frag exploit CVE-2026-43500 2. Works on all Debian/Ubuntu Arch based platforms i.e. Kali, ParrotSec, BlackArch 3. Added --check to run as non-root user. Added fragnesia support as it shares the same patch surface with dirtyfrag...

CVE-2017-7184

CVE-2017-7184 – Linux Kernel XFRM Privilege Escalation No Sudo Overview This repository contains a proof-of-concept local privilege escalation exploit for CVE-2017-7184 , a Linux kernel vulnerability in the XFRM IPsec netlink subsystem. The exploit demonstrates how an unprivileged user can gain...

DirtyFrag

Dirty-Frag Linux CVE-2026-43284 & CVE-2026-43500 Copied from @V4bel : Thanks : This document describes the Dirty Frag vulnerability class, first discovered and reported by Hyunwoo Kim @v4bel, which can obtain root privileges on major Linux distributions by chaining the xfrm-ESP Page-Cache Write...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: xfrm: natkeepalive: avoid double-free on send error The natkeepalivesend function frees the keepalive packet whenever the IPv4 or IPv6 send helper reports an error. This cleanup is only necessary before the packet is passed to th...

DEBIAN-CVE-2026-98103

In the Linux kernel, the following vulnerability has been resolved: igmp: convert struct ipsflist to RCU Commit 23d2b94043ca "igmp: Add ipmclist lock in ipcheckmcrcu" added spinlockbh&im-lock to ipcheckmcrcu to prevent a use-after-free while iterating im-sources during concurrent deletions...

DirtyClone

DirtyClone DirtyClone is a diagnostic, proof-of-concept local privilege escalation tool written in C. It targets a kernel/XFRM-related exploit path described in the source as CVE-2026-43503 and is intended only for authorized security research in controlled environments. Overview This repository...

CVE-2026-43284-DIRTY-FRAG-

CVE-2026-43284-DIRTY-FRAG- Detailed technical analysis of CVE-2026-43284 Dirty Frag local privilege escalation flaw in the Linux kernel. CVE-2026-43284 commonly referred to as part of the Dirty Frag vulnerability suite is a critical local privilege escalation LPE flaw in the Linux kernel. It stem...

UBUNTU-CVE-2026-98103

In the Linux kernel, the following vulnerability has been resolved: igmp: convert struct ipsflist to RCU Commit 23d2b94043ca "igmp: Add ipmclist lock in ipcheckmcrcu" added spinlockbh&im-lock to ipcheckmcrcu to prevent a use-after-free while iterating im-sources during concurrent deletions...

Oracle Linux 9 : kernel (ELSA-2026-71232)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-71232 advisory. - net: tun: bound receive headroom CKI Backport Bot RHEL-264401 CVE-2026-81000 - xfrm: ah6: validate routing header segmentsleft CKI Backport Bot...

kernel: xfrm: ah6: validate routing header segments_left

A flaw was found in the Linux kernel's xfrm subsystem, specifically within the AH6 Authentication Header for IPv6 module. The ipv6rearrangerthdr function does not properly validate the segmentsleft field in routing headers when processing raw IPv6 HDRINCL packets. This oversight allows an attacke...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

kernel: xfrm: ah6: validate routing header segments_left

A flaw was found in the Linux kernel's xfrm subsystem, specifically within the AH6 Authentication Header for IPv6 module. The ipv6rearrangerthdr function does not properly validate the segmentsleft field in routing headers when processing raw IPv6 HDRINCL packets. This oversight allows an attacke...

SG-2026-0024

Dirty Frag primitive-only PoC Readable N4C demonstrator for CVE-2026-43284 XFRM/ESP and CVE-2026-43500 RxRPC/RXKAD. The PoC answers one question: can an unprivileged process change the page cache of a root-owned, read-only file through a sharedskbuff fragment? It does not overwrite /usr/bin/su or...