CVE-2021-3493

CVE-2021-3493 — Ubuntu OverlayFS Escalatione dei Privilegi Locali Una proof-of-concept funzionante per CVE-2021-3493 , una vulnerabilità di escalation dei privilegi locali nell'implementazione OverlayFS del kernel Ubuntu. Un utente non privilegiato può montare un filesystem overlay all'interno di...

CVE-2023-0386_POC

Squadra CVE-MD Questo repository fornisce una prova di concetto per CVE-2023-0386: https://nvd.nist.gov/vuln/detail/CVE-2023-0386 Membri del team: Bǎnicǎ Dragoș-Marius e Borsos Matheas-Roland Ecco il video: https://www.youtube.com/watch?v=Ikux1rjIYP0 CVE-2023-0386 — Escalation dei privilegi local...

OverlayFS---CVE-2021-3493

TL;DR Find out how a vulnerability in OverlayFS allows local users under Ubuntu to gain root privileges. Vulnerability Summary An Ubuntu specific issue in the overlayfs file system in the Linux kernel where it did not properly validate the application of file system capabilities with respect to...

Astra Linux – Vulnerability in Linux

The overlayfs implementation in the Linux kernel failed to properly validate, regarding user namespaces, the setting of file capabilities on files in the underlying file system. Due to the combination of unprivileged user namespaces and a patch carried in the Ubuntu kernel that allows unprivilege...

USN-8193-2 libcap2 vulnerability

USN-8193-1 fixed a vulnerability in libcap. This update provides the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: Ali Raza discovered that libcap incorrectly handled file capability updates. A local attacker could...

uutils coreutils has a Time-of-Check to Time-of-Use (TOCTOU) race condition

A Time-of-Check to Time-of-Use TOCTOU vulnerability exists in the mv utility of uutils coreutils during cross-device moves. The extended attribute xattr preservation logic uses multiple path-based system calls that perform fresh path-to-inode lookups for each operation. A local attacker with writ...

EUVD-2026-24990

A Time-of-Check to Time-of-Use TOCTOU vulnerability exists in the mv utility of uutils coreutils during cross-device moves. The extended attribute xattr preservation logic uses multiple path-based system calls that perform fresh path-to-inode lookups for each operation. A local attacker with writ...

GHSA-X4MC-MQM7-GG39 uutils coreutils has a Time-of-Check to Time-of-Use (TOCTOU) race condition

A Time-of-Check to Time-of-Use TOCTOU vulnerability exists in the mv utility of uutils coreutils during cross-device moves. The extended attribute xattr preservation logic uses multiple path-based system calls that perform fresh path-to-inode lookups for each operation. A local attacker with writ...

CVE-2026-35354 uutils coreutils mv Security Xattr TOCTOU Race in Cross-Device

A Time-of-Check to Time-of-Use TOCTOU vulnerability exists in the mv utility of uutils coreutils during cross-device moves. The extended attribute xattr preservation logic uses multiple path-based system calls that perform fresh path-to-inode lookups for each operation. A local attacker with writ...

PT-2026-34490

Name of the Vulnerable Software and Affected Versions uutils coreutils affected versions not specified Description A Time-of-Check to Time-of-Use TOCTOU issue exists in the mv utility during cross-device moves. The logic for preserving extended attributes xattr relies on multiple path-based syste...

Linux Distros Unpatched Vulnerability : CVE-2021-3493

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an...

DEBIAN-CVE-2022-49296

In the Linux kernel, the following vulnerability has been resolved: ceph: fix possible deadlock when holding Fwb to get inlinedata 1, mount with wsync. 2, create a file with ORDWR, and the request was sent to mds.0: cephatomicopen-- cephmdscdorequestopenc finishopenfile, dentry, cephopen--...

GHSA-C9CP-9C75-9V8C containerd started with non-empty inheritable Linux process capabilities

Impact A bug was found in containerd where containers were incorrectly started with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve2...

CVE-2022-3466 Cri-o: security regression of cve-2022-27652

The version of cri-o as released for Red Hat OpenShift Container Platform 4.9.48, 4.10.31, and 4.11.6 via RHBA-2022:6316, RHBA-2022:6257, and RHBA-2022:6658, respectively, included an incorrect version of cri-o missing the fix for CVE-2022-27652, which was previously fixed in OCP 4.9.41 and 4.10....

GameOver(lay): Two Severe Linux Vulnerabilities Impact 40% of Ubuntu Users

Cybersecurity researchers have disclosed two high-severity security flaws in the Ubuntu kernel that could pave the way for local privilege escalation attacks. Cloud security firm Wiz, in a report shared with The Hacker News, said the easy-to-exploit shortcomings have the potential to impact 40% o...

MGASA-2023-0213 Updated skopeo/buildah/podman packages fix security vulnerability

Information disclosure flaw was found in Buildah CVE-2021-3602 podman allows forwarding hosts ports to vm from within vm CVE-2021-4024 Allows use "../" separators in containernetworking/cni to reference binaries such as 'reboot' in network configuration CVE-2021-20206 github.com/containers/storag...

kernel: FUSE filesystem low-privileged user privileges escalation

A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalat...

K54635192: Linux kernel overlayfs vulnerability CVE-2021-3493

Security Advisory Description The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the...

SUSE CVE-2010-2198

lib/fsm.c in RPM 4.8.0 and earlier does not properly reset the metadata of an executable file during replacement of the file in an RPM package upgrade or deletion of the file in an RPM package removal, which might allow local users to gain privileges or bypass intended access restrictions by...

USN-5776-1: containerd vulnerabilities

It was discovered that containerd incorrectly handled memory when receiving certain faulty Exec or ExecSync commands. A remote attacker could possibly use this issue to cause a denial of service or crash containerd. CVE-2022-23471, CVE-2022-31030 It was discovered that containerd incorrectly set ...