kernel: mm: privilege escalation via MAP_PRIVATE COW breakage

A race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write COW breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on...

kernel: mm: privilege escalation via MAP_PRIVATE COW breakage

A race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write COW breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on...

[ASA-201610-14] linux: privilege escalation

Arch Linux Security Advisory ASA-201610-14 ========================================== Severity: High Date : 2016-10-22 CVE-ID : CVE-2016-5195 Package : linux Type : privilege escalation Remote : No Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package linux before version...

Serious Dirty Cow Linux Vulnerability Under Attack

A nine-year-old Linux vulnerability that affects most of the major distributions has been recently used in public attacks. The flaw, nicknamed Dirty Cow because it lives in the copy-on-write COW feature in Linux, is worrisome because it can give a local attacker root privileges. While the Linux...

Linux kernel memory subsystem copy on write mechanism contains a race condition vulnerability

Overview The Linux kernel since version 2.6.22 contains a race condition in the way the copy on write mechanism is handled by the memory subsystem, which may be leveraged locally to gain root privileges. Description CWE-362: Concurrent Execution using Shared Resource with Improper Synchonization...

Ubuntu: Security Advisory (USN-3105-1)

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...

USN-3106-4: Linux kernel (Qualcomm Snapdragon) vulnerability

It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mappings. A local attacker could use this to gain administrative privileges...

USN-3106-4 linux-snapdragon vulnerability

It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mappings. A local attacker could use this to gain administrative privileges...

USN-3106-3 linux-raspi2 vulnerability

It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mappings. A local attacker could use this to gain administrative privileges...

USN-3106-1 linux vulnerability

It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mappings. A local attacker could use this to gain administrative privileges...

USN-3105-1 linux vulnerability

It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mappings. A local attacker could use this to gain administrative privileges...

Ubuntu 16.04 LTS : Linux kernel vulnerability (USN-3106-1)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-3106-1 advisory. It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mapping...

CVE-2016-5195

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write COW feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."...

UBUNTU-CVE-2016-5195

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write COW feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."...

PT-2016-3096

Name of the Vulnerable Software and Affected Versions Linux kernel versions 2.x through 4.8.2 Description A race condition in the mm/gup.c component of the Linux kernel allows local users to gain elevated privileges. This occurs due to the incorrect handling of the copy-on-write COW feature—a...

dirtyc0w

A race condition in the Linux kernel's handling of copy-on-write COW operations means that users can gain write access to otherwise read-only areas of memory and gain permissions...

Fedora 24 : pbuilder (2016-bdb86fbc7d)

Update to version 0.225.2, see http://metadata.ftp-master.debian.org/changelogs//main/p/pbuilder/pbui lder0.225.2changelog for details. ---- This update fixes a potential security issue where copy-on-write does not work when used with eatmydata, resulting in persistent filesystem changes. Note th...

openstack-nova: Host data leak through resize/migration

An information-exposure flaw was found in the OpenStack Compute nova resize and migrate functionality. An authenticated user could write a malicious qcow header to an ephemeral or root disk, referencing a block device as a backing file. With a subsequent resize or migration, file system content o...

DEBIAN-CVE-2015-7548

OpenStack Compute Nova before 2015.1.3 kilo and 12.0.x before 12.0.1 liberty, when using libvirt to spawn instances and usecowimages is set to false, allow remote authenticated users to read arbitrary files by overwriting an instance disk with a crafted image and requesting a snapshot...

openstack-nova: Unprivileged API user can access host data using instance snapshot

A flaw was discovered in the OpenStack Compute nova snapshot feature when using the libvirt driver. A compute user could overwrite an attached instance disk with a malicious header specifying a backing file, and then request a snapshot, causing a file from the compute host to be leaked. This flaw...