CVE-2014-9717

fs/namespace.c in the Linux kernel before 4.0.2 processes MNTDETACH umount2 system calls without verifying that the MNTLOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user...

Arbitrary file deletion

fs/namespace.c in the Linux kernel before 4.0.2 does not properly support mount connectivity, which allows local users to read arbitrary files by leveraging user-namespace root access for deletion of a file or directory...

UBUNTU-CVE-2015-4177

The collectmounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service system crash by leveraging user-namespace root access for an MNTDETACH umount2 system...

Design/Logic Flaw

fs/namespace.c in the Linux kernel before 4.0.2 processes MNTDETACH umount2 system calls without verifying that the MNTLOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user...

Design/Logic Flaw

The collectmounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service system crash by leveraging user-namespace root access for an MNTDETACH umount2 system...

UBUNTU-CVE-2014-9717

fs/namespace.c in the Linux kernel before 4.0.2 processes MNTDETACH umount2 system calls without verifying that the MNTLOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user...

UBUNTU-CVE-2015-4178

The fspin implementation in the Linux kernel before 4.0.5 does not ensure the internal consistency of a certain list data structure, which allows local users to cause a denial of service system crash by leveraging user-namespace root access for an MNTDETACH umount2 system call, related to...

CVE-2015-4178

The fspin implementation in the Linux kernel before 4.0.5 does not ensure the internal consistency of a certain list data structure, which allows local users to cause a denial of service system crash by leveraging user-namespace root access for an MNTDETACH umount2 system call, related to...

CVE-2015-4178

Technical details about CVE-2015-4178 are not publicly provided in the connected documents. The materials reference the vulnerability generally; monitor for updates from official advisories.

CVE-2015-4177

The collectmounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service system crash by leveraging user-namespace root access for an MNTDETACH umount2 system...

CVE-2014-9717

fs/namespace.c in the Linux kernel before 4.0.2 processes MNTDETACH umount2 system calls without verifying that the MNTLOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user...

CVE-2015-4176

fs/namespace.c in the Linux kernel before 4.0.2 does not properly support mount connectivity, which allows local users to read arbitrary files by leveraging user-namespace root access for deletion of a file or directory...

CVE-2015-4176

fs/namespace.c in the Linux kernel before 4.0.2 does not properly support mount connectivity, which allows local users to read arbitrary files by leveraging user-namespace root access for deletion of a file or directory...

CVE-2015-4178

The fspin implementation in the Linux kernel before 4.0.5 does not ensure the internal consistency of a certain list data structure, which allows local users to cause a denial of service system crash by leveraging user-namespace root access for an MNTDETACH umount2 system call, related to...

CVE-2014-9717

fs/namespace.c in the Linux kernel before 4.0.2 processes MNTDETACH umount2 system calls without verifying that the MNTLOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user...

Ubuntu 15.10 - PT Chown Arbitrary PTs Access Via User Namespace Privilege Escalation

Ubuntu 15.10 - PT Chown Arbitrary PTs Access Via User Namespace Privilege Escalation Source: http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/ Introduction Problem description: With Ubuntu Wily and earlier, /usr/lib/ptchown was used to change ownership of slave pts...

Ubuntu < 15.10 - PT Chown Arbitrary PTs Access Via User Namespace Privilege Escalation

Source: http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/ Introduction Problem description: With Ubuntu Wily and earlier, /usr/lib/ptchown was used to change ownership of slave pts devices in /dev/pts to the same uid holding the master file descriptor for the slave...

Amazon Linux: Security Advisory (ALAS-2016-648)

The remote host is missing an update for the SPDX-FileCopyrightText: 2016 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Linux kernel elevation of privilege vulnerability (CNVD-2016-01042)

The Linux kernel is an open source, free operating system kernel originally done by Linus Torvalds. A security vulnerability exists in the kernel/ptrace.c file in Linux kernel 4.4.1 and earlier versions, which stems from the program's failure to properly handle uid and gid mappings. A local...

Medium: kernel

Issue Overview: The Linux kernel before 4.4.1 allows local users to bypass file-descriptor limits and cause a denial of service memory consumption by sending each descriptor over a UNIX socket before closing it, related to net/unix/afunix.c and net/unix/garbage.c. CVE-2013-4312 A race condition i...