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CVE-2016-9178

Status Candidate

Overview

The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel before 4.7.5 does not initialize a certain integer variable, which allows local users to obtain sensitive information from kernel stack memory by triggering failure of a get_user_ex call.

Related Files

Ubuntu Security Notice USN-3422-2
Posted Sep 19, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3422-2 - USN-3422-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 LTS. It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-10044, CVE-2016-10200, CVE-2016-7097, CVE-2016-8650, CVE-2016-9083, CVE-2016-9084, CVE-2016-9178, CVE-2016-9191, CVE-2016-9604, CVE-2016-9754, CVE-2017-1000251, CVE-2017-5970, CVE-2017-6214, CVE-2017-6346, CVE-2017-6951, CVE-2017-7187, CVE-2017-7472, CVE-2017-7541
MD5 | aa0d1979692666d02459e80975dec493
Ubuntu Security Notice USN-3422-1
Posted Sep 19, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3422-1 - It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service. It was discovered that the asynchronous I/O subsystem of the Linux kernel did not properly set permissions on aio memory mappings in some situations. An attacker could use this to more easily exploit other vulnerabilities. Various other issues were also addressed.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-10044, CVE-2016-10200, CVE-2016-7097, CVE-2016-8650, CVE-2016-9083, CVE-2016-9084, CVE-2016-9178, CVE-2016-9191, CVE-2016-9604, CVE-2016-9754, CVE-2017-1000251, CVE-2017-5970, CVE-2017-6214, CVE-2017-6346, CVE-2017-6951, CVE-2017-7187, CVE-2017-7472, CVE-2017-7541
MD5 | aa932dae73e3a34aa75e9674d33572f6
Ubuntu Security Notice USN-3161-3
Posted Dec 20, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3161-3 - Tilman Schmidt and Sasha Levin discovered a use-after-free condition in the TTY implementation in the Linux kernel. A local attacker could use this to expose sensitive information. It was discovered that the Video For Linux Two implementation in the Linux kernel did not properly handle multiple planes when processing a VIDIOC_DQBUF ioctl. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2015-8964, CVE-2016-4568, CVE-2016-6213, CVE-2016-7042, CVE-2016-7097, CVE-2016-7425, CVE-2016-8630, CVE-2016-8633, CVE-2016-8645, CVE-2016-8658, CVE-2016-9178, CVE-2016-9555
MD5 | 92c03c76e3e3979d62d79b96ba3d7866
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