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CVE-2016-1576

Status Candidate

Overview

The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.

Related Files

Ubuntu Security Notice USN-2908-5
Posted Feb 27, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2908-5 - USN-2908-2 fixed vulnerabilities in the Ubuntu 15.10 Linux kernel backported to Ubuntu 14.04 LTS. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 14.04 LTS guests running the Ubuntu 15.10 backport kernel within VMWare virtual machines. This update fixes the problem. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2013-4312, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576, CVE-2016-2069
SHA-256 | 5e10ec647672807200c174c55a66cdcc9b1b8e1775c7a5dfb35815b6935f9d01
Ubuntu Security Notice USN-2909-2
Posted Feb 27, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2909-2 - USN-2909-1 fixed vulnerabilities in the Ubuntu 14.10 Linux kernel backported to Ubuntu 14.04 LTS. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 14.04 LTS guests running the Ubuntu 14.10 backport kernel within VMWare virtual machines. This update fixes the problem. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2015-8785, CVE-2016-1575, CVE-2016-1576
SHA-256 | 3c3d759a7baed04064d8e1a5aaf0a6c656497f00d2b9bbda49970b61d924499e
Ubuntu Security Notice USN-2910-2
Posted Feb 27, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2910-2 - USN-2910-1 fixed vulnerabilities in the Ubuntu 15.04 Linux kernel backported to Ubuntu 14.04 LTS. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 14.04 LTS guests running the Ubuntu 15.04 backport kernel within VMWare virtual machines. This update fixes the problem. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2015-7550, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576
SHA-256 | 1c5860f7d5e5f701a0618aa045b06de9bedc1bdeb2417d42f72a17ed4039636b
Ubuntu Security Notice USN-2908-4
Posted Feb 27, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2908-4 - USN-2908-1 fixed vulnerabilities in the Linux kernel for Ubuntu 15.10. An incorrect locking fix caused a regression that broke graphics displays for Ubuntu 15.10 guests running within VMWare virtual machines. This update fixes the problem. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2013-4312, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576, CVE-2016-2069
SHA-256 | 2ae3612b5f8c1f000a29250f123157f70e9d98b5ff013458912d9c9b43f07b03
Ubuntu Security Notice USN-2909-1
Posted Feb 23, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2909-1 - halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged attacker could use this to gain privileges. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, osx, ubuntu
advisories | CVE-2015-8785, CVE-2016-1575, CVE-2016-1576
SHA-256 | 47eca111b5e14e6a83d4d3e3e108c3c0f4bb558525426c43eb0ea1c7acf76544
Ubuntu Security Notice USN-2910-1
Posted Feb 23, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2910-1 - halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged attacker could use this to gain privileges. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, osx, ubuntu
advisories | CVE-2015-7550, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576
SHA-256 | d315767d6b74fc5875e1959ee3b8350c03d865880496c94d9e5829712fcd69a4
Ubuntu Security Notice USN-2908-2
Posted Feb 23, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2908-2 - halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged attacker could use this to gain privileges. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, osx, ubuntu
advisories | CVE-2013-4312, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576, CVE-2016-2069
SHA-256 | 3bd3447a7566b4ddafb9950b75297f97dfae5f898ad9d051beef16b3a2597662
Ubuntu Security Notice USN-2908-3
Posted Feb 23, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2908-3 - halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged attacker could use this to gain privileges. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, osx, ubuntu
advisories | CVE-2013-4312, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576, CVE-2016-2069
SHA-256 | 8716f9dfa5387ac6e3e6ff94510d7161d98367b8036548e12a2e1d81732e1f1c
Ubuntu Security Notice USN-2908-1
Posted Feb 23, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2908-1 - halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged attacker could use this to gain privileges. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, osx, ubuntu
advisories | CVE-2013-4312, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576, CVE-2016-2069
SHA-256 | 07596e6ec12eeb907c4ab0d2cdc1c2ab789da78a8039e9d891d2a3f13f37c5f4
Ubuntu Security Notice USN-2907-2
Posted Feb 23, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2907-2 - halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged attacker could use this to gain privileges. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, osx, ubuntu
advisories | CVE-2015-7550, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576
SHA-256 | 963e536d218f0e81e41ebb8a8147fbedb301ff6538499599412b9b5c1093f890
Ubuntu Security Notice USN-2907-1
Posted Feb 23, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2907-1 - halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges. halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs. A local unprivileged attacker could use this to gain privileges. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, osx, ubuntu
advisories | CVE-2015-7550, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575, CVE-2015-8785, CVE-2016-1575, CVE-2016-1576
SHA-256 | fdac4052fa0c407475c40375a8f0dfb58fed0c920779bbb4203e890183fb094e
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