CVE-2026-98649

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine subsystem on s390 architectures. A local attacker can exploit this vulnerability to cause a Denial of Service DoS or memory corruption by triggering a race condition during guest memory page destruction. This issue occurs...

CVE-2026-98648

A flaw was found in the Linux kernel's IBM s390 Ultravisor subsystem. When searching stored secrets on systems holding more than 85 secrets, the kernel incorrectly references the total secret count instead of the number of items stored in the current memory page. A local user can exploit this...

CVE-2026-31431

CVE-2026-31431 Copy Fail — C PoC Trivial unprivileged LPE by writing 4 controlled bytes into the page cache of any readable file via a logic bug in AFALG kernel 4.14 → early 2026. Corrupt /usr/bin/su in-memory, then run it → root. Build & Run 1. Generate an ELF payload reverse shell example...

kernel: inet: frags: strip GSO state from fragments before reassembly

A flaw was found in the Linux kernel's network fragment reassembly process. An unprivileged local user, or a guest in a virtualized environment, could craft specially formed IPv4 or IPv6 network fragments that incorrectly retain Generic Segmentation Offload GSO state after reassembly. This...

kernel: vfio/pci: clear vdev->msi_perm after freeing it on init failure

A flaw was found in the Linux kernel's vfio/pci component. During device initialization, a memory pointer is not properly cleared after being freed, leading to a use-after-free and double-free vulnerability. A local attacker could exploit this flaw to cause a system crash, resulting in a denial o...

kernel: ipv4: raw: reject IP_HDRINCL packets with ihl < 5

A flaw was found in the Linux kernel's handling of IPv4 raw sockets. An unprivileged attacker with CAPNETRAW capabilities can craft and inject a malformed IPv4 packet with an invalid Internet Header Length IHL. This can lead to an out-of-bounds memory access when the packet is processed by certai...

kernel: xfs: bounds-check buffer log item's dirty bitmap

A flaw was found in the Linux kernel's XFS filesystem. A local attacker, by mounting a specially crafted XFS image, could trigger an out-of-bounds write during log recovery. This vulnerability allows for kernel heap corruption, which could lead to a denial of service or potentially arbitrary code...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8. 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 each vulnerability from th...

CVE-2025-38561

CVE-2025-38561 ksmbd: PreauhHashValue race condition If client send multiple session setup requests to ksmbd, PreauhHashValue race condition could happen...

Linux-CopyFail-C-Version-CVE-2026-31431

Linux CopyFail- C Version - CVE-2026-31431 Clean C version of Copy Fail CVE-2026-31431 - Linux Local Privilege Escalation exploit using AFALG + authencesn + splice primitive. Overwrites the page cache of /usr/bin/su with a tiny setuid shellcode to gain root privileges. Educational proof-of-concep...

KillChain

KillChain ?? Disclaimer: This project is intended strictly for educational and security research purposes. The author is not responsible for any misuse, damage, or illegal activity caused by this tool. Use only in isolated lab environments with explicit permission. Overview KillChain is a user-mo...

CVE-2026-31431-Analysis-and-Fix

CVE-2026-31431 "Copy Fail" — Technical Deep Dive Severity: CVSS 7.8 High Class: Local Privilege Escalation Introduced: Linux 4.14 2017 Fixed: commit a664bf3d603d 1. Background CVE-2026-31431 is a local privilege escalation flaw in the Linux kernel's algifaead module — the AEAD socket interface of...

CVE-2026-31431

copy.fail — AFALG AEAD splice primitive CVE-2026-31431 Overview This project is a C port of the original Python prototype, by offsecguy. It leverages the Linux kernel crypto API AFALG using: authencesnhmacsha256,cbcaes AEAD mode MSGMORE flag splice system call The technique feeds data from a...

CVE-2026-31431

CVE-2026-31431: "Copy Fail" - Linux Kernel Local Privilege Escalation 📢 Disclaimer This repository is strictly for educational and cybersecurity research purposes. The exploit code is analyzed to understand the underlying vulnerability, facilitate patching, and develop defensive strategies. Do no...

CVE-2026-31431

Test, patch, fix: CVE-2026-31431 Test:Check vuln python3 -c 'import socket;exec"try:s=socket.socketsocket.AFALG,socket.SOCKSEQPACKET,0;s.bind"aead","authencesnhmacsha256,cbcaes";print"vulnerable"\nexcept:print"not vulnerable""' check if module Check if module is loaded in kernel lsmod |...

wg.copyfail.patch

CVE-2026-31431 aka Copy.Fail eBPF workaround Why it matters This CVE allows authorized user change cache copy of any readable file, which leads to Local Privilege Escalation aka local root exploit, sandbox/container escape and other issues. It works by creating AFALG socket that is provided by...

CVE-2023-0386

README gcc -Wall exp.c pkg-config fuse --cflags --libs -o exp ./exp /tmp Vulnerability Analysis The theoretical knowledge in this article namespaces, overlay filesystem, fuse filesystem, etc. comes from ChatGPT. Vulnerability Overview Vulnerability ID: CVE-2023-0386 Vulnerable Product: Linux kern...

CVE-2026-31431-RCE-Exploit

🔴 CVE-2026-31431 — "Copy Fail" A 9-Year-Old Linux Kernel Logic Bug That Grants Root in Seconds Overview Copy Fail is a high-severity local privilege escalation LPE vulnerability in the Linux kernel's cryptographic subsystem algifaead. Discovered and disclosed by Theori via their Xint Code...

Copy-fail-CVE-2026-31431-Exploit-in-C

Copy-fail-CVE-2026-31431-Exploit-in-C Discovery and original disclosure of CVE-2026-31431: Theori / Xint. Public writeup: https://copy.fail/. Overview This program targets the Linux kernel’s AFALG AEAD path and attempts to trigger the “Copy Fail” page-cache corruption behavior described in public...

CVE-2026-114135

Jupyter Server is the backend for Jupyter web applications. From 2.0.0 until 2.6.0, enabling GatewayClient.url replaced the normal KernelWebsocketHandler with WebSocketChannelsHandler, which authenticated the user but did not call authorizer.isauthorized... for the execute action on the kernels...