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CVE-2017-2584

Status Candidate

Overview

arch/x86/kvm/emulate.c in the Linux kernel through 4.9.3 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free) via a crafted application that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt.

Related Files

Ubuntu Security Notice USN-3361-1
Posted Jul 21, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3361-1 - USN-3358-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. Please note that this update changes the Linux HWE kernel to the 4.10 based kernel from Ubuntu 17.04, superseding the 4.8 based HWE kernel from Ubuntu 16.10. Ben Harris discovered that the Linux kernel would strip extended privilege attributes of files when performing a failed unprivileged system call. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2015-1350, CVE-2016-10208, CVE-2016-8405, CVE-2016-8636, CVE-2016-9083, CVE-2016-9084, CVE-2016-9191, CVE-2016-9604, CVE-2016-9755, CVE-2017-2583, CVE-2017-2584, CVE-2017-2596, CVE-2017-2618, CVE-2017-2671, CVE-2017-5546, CVE-2017-5549, CVE-2017-5550, CVE-2017-5551, CVE-2017-5576, CVE-2017-5669, CVE-2017-5897, CVE-2017-5970, CVE-2017-6001, CVE-2017-6214, CVE-2017-6345, CVE-2017-6346, CVE-2017-6347, CVE-2017-6348
SHA-256 | a02dd5836ffae854b87f99a0c65d15d6c8e6dd7ae37fde2f48b13dc8494472d6
Kernel Live Patch Security Notice LSN-0025-1
Posted Jul 16, 2017
Authored by Benjamin M. Romer

Andrey Konovalov discovered a use-after-free vulnerability in the DCCP implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges. It was discovered that the stack guard page for processes in the Linux kernel was not sufficiently large enough to prevent overlapping with the heap. An attacker could leverage this with another vulnerability to execute arbitrary code and gain administrative privileges. Various other vulnerabilities were addressed.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability
systems | linux
advisories | CVE-2016-8632, CVE-2016-9604, CVE-2017-1000364, CVE-2017-2584, CVE-2017-6074, CVE-2017-7346, CVE-2017-7472, CVE-2017-8890, CVE-2017-9074, CVE-2017-9075, CVE-2017-9242
SHA-256 | 91cb2bc988d62a783323447ecb77bf0d50a13e5d484b3ad48a99a46f99980cdf
Debian Security Advisory 3791-1
Posted Feb 23, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3791-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or have other impacts.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2016-6786, CVE-2016-6787, CVE-2016-8405, CVE-2016-9191, CVE-2017-2583, CVE-2017-2584, CVE-2017-2596, CVE-2017-2618, CVE-2017-5549, CVE-2017-5551, CVE-2017-5897, CVE-2017-5970, CVE-2017-6001, CVE-2017-6074
SHA-256 | d4c6af8f0e3dd4d9e278a3515440e0936dca73862bdc065cf6bd5e2d14200203
Ubuntu Security Notice USN-3208-1
Posted Feb 23, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3208-1 - It was discovered that the generic SCSI block layer in the Linux kernel did not properly restrict write operations in certain situations. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. CAI Qian discovered that the sysctl implementation in the Linux kernel did not properly perform reference counting in some situations. An unprivileged attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2016-10088, CVE-2016-9191, CVE-2016-9588, CVE-2017-2583, CVE-2017-2584, CVE-2017-5549, CVE-2017-6074
SHA-256 | 06bc59f5224049671a0fcd3f4d851d69bdc6602bedb41005a8a51bcf1c98fa56
Ubuntu Security Notice USN-3208-2
Posted Feb 23, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3208-2 - USN-3208-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that the generic SCSI block layer in the Linux kernel did not properly restrict write operations in certain situations. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-10088, CVE-2016-9191, CVE-2016-9588, CVE-2017-2583, CVE-2017-2584, CVE-2017-5549, CVE-2017-6074
SHA-256 | 1d3dac77e17589a335d73b1696ce93581c43caf1d8c627cd121b232338ea070c
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