util-linux: util-linux: X-mount.subdir detached-tree resolution can escape via intermediate symlinks

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

CVE-2025-40271

🔴 CVE-2025-40271: Critical Use-After-Free Vulnerability in the Linux Kernel 🛡️ Vulnerability Details CVE-2025-40271 is a critical Use-After-Free UAF vulnerability affecting the /proc filesystem of the Linux kernel. The flaw resides in the procreaddirde function, responsible for listing the content...

CVE-2026-31431-Copy-Fail-R-pertoire-de-Pr-vention

🔴 CVE-2026-31431 — Copy Fail Linux内核本地权限提升（LPE）——防御性研究仓库 📖 介绍 Copy Fail CVE-2026-31431 是一种影响Linux内核的本地权限提升（LPE）漏洞，通过AFALG、splice和authencesn机制实现对页缓存的受控破坏。 本仓库的目标是： 记录漏洞的内部机制， 解释完整的利用逻辑链， 介绍防御性影响， 提供检测策略， 给出缓解措施， 提升对Linux内核安全的认知。 ⚠️ 本项目严格用于教育、防御和安全研究目的。 📑 目录 概述 漏洞机制 攻击面 实验室演示 检测与入侵指标 缓解措施 时间线 参考 法律声...

Fragnesia-CVE-2026-46300

🔴 Fragnesia — CVE-2026-46300 Elevación de privilegios en el kernel de Linux · CVSS 7.8 · Divulgado el 14 de mayo de 2026 Repositorio de sensibilización únicamente. Este repositorio no contiene código de explotación. Su objetivo es informar a los administradores de sistemas, ingenieros y equipos d...

OverlayFS-PrivEsc-CVE-2022-0944

CVE-2022-0944: OverlayFS में विशेषाधिकार उन्नयन भेद्यता 🛡️ OverlayFS में Linux कर्नेल की विशेषाधिकार उन्नयन भेद्यता के लिए सुरक्षा सलाह और शमन मार्गदर्शिका। अवलोकन CVE-2022-0944 Linux कर्नेल के OverlayFS सबसिस्टम में एक सुरक्षा भेद्यता है जो स्थानीय हमलावरों को विशिष्ट कॉन्फ़िगरेशन में फ़ाइल...

OCI-Ansible-Fix-CVE-2026-31431

CVE-2026-31431 Corrección con Ansible Este playbook corrige CVE-2026-31431, también conocido como Copy Fail, en instancias Linux en OCI. CVE-2026-31431 es un problema de escalada de privilegios local en la implementación algifaead del kernel de Linux utilizada por la API de criptografía en espaci...

go-fdo-server security update

An update is available for go-fdo-server. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list This package provides a server-side implementation of the FIDO Device...

RingReaper

RingReaper RingReaper is a simple post-exploitation agent for Linux designed for those who need to operate stealthily, minimizing the chances of being detected by EDR solutions. The idea behind this project was to leverage iouring , the new asynchronous I/O interface in the Linux kernel,...

CVE-2026-76642

util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owner hooks to clone filesystems with...

CVE-2026-76642

util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owner hooks to clone filesystems with...

EUVD-2026-70382

util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owner hooks to clone filesystems with...

CVE-2026-76642 util-linux libmount Privilege Escalation via Failed Mount Helper

util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owner hooks to clone filesystems with...

CVE-2026-76642

util-linux (libmount component) versions through 2.41.5 and 2.42.2 fail to check the exit status of an external mount helper before executing privileged post-mount hooks. A local unprivileged user with an /etc/fstab entry using the user option combined with X-mount.idmap or X-mount.owner/group/mo...

CVE-2026-76642 util-linux libmount Privilege Escalation via Failed Mount Helper

util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owner hooks to clone filesystems with...

Exploit for Improper Validation of Consistency within Input in Linux Linux_Kernel

CVE-2026-31431 "Copy Fail" Toolkit Author: byt3l0rd De...

exploit

Exploit Оффенсивный хакерский инструмент Начало работы Это хакерский инструмент или программа, закодированная и созданная для помощи хакеру во взломе и выполнении эксплойтов. По вопросам Telegram: https://t.me/bitgodhack Email: [email protected] Требования к установке на любом дистрибутиве...

CVE-2023-3460_FIX

CVE-20233460 此实验室旨在用于学习和权限提升。为了练习权限提升技能，您可以阅读下面的链接。 https://viblo.asia/p/leo-thang-dac-quyen-trong-linux-linux-privilege-escalation-1-using-suid-bit-QpmlexgrZrd...

CVE-2026-80757 selinux: reject a class permission count below its inherited common

In the Linux kernel, the following vulnerability has been resolved: selinux: reject a class permission count below its inherited common securitygetpermissions maps an inherited common's permissions into an array sized by the class's own permissions.nprim, but classread takes that nprim verbatim...

CVE-2026-80757 selinux: reject a class permission count below its inherited common

In the Linux kernel, the following vulnerability has been resolved: selinux: reject a class permission count below its inherited common securitygetpermissions maps an inherited common's permissions into an array sized by the class's own permissions.nprim, but classread takes that nprim verbatim...

CVE-2026-80757

In the Linux kernel, the following vulnerability has been resolved: selinux: reject a class permission count below its inherited common securitygetpermissions maps an inherited common's permissions into an array sized by the class's own permissions.nprim, but classread takes that nprim verbatim...