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CVE-2017-2618

Status Candidate

Overview

A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty (null) write to this file can crash the system by causing the system to attempt to access unmapped kernel memory.

Related Files

Ubuntu Security Notice USN-3381-2
Posted Aug 7, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3381-2 - USN-3381-1 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 ESM. Peter Pi discovered that the colormap handling for frame buffer devices in the Linux kernel contained an integer overflow. A local attacker could use this to disclose sensitive information. Various other issues were also addressed.

tags | advisory, overflow, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-8405, CVE-2017-1000365, CVE-2017-2618, CVE-2017-7482
MD5 | 872f12a9aea55423ef4a6ad59dc44a44
Ubuntu Security Notice USN-3381-1
Posted Aug 7, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3381-1 - Peter Pi discovered that the colormap handling for frame buffer devices in the Linux kernel contained an integer overflow. A local attacker could use this to disclose sensitive information. It was discovered that the Linux kernel did not properly restrict RLIMIT_STACK size. A local attacker could use this in conjunction with another vulnerability to possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2016-8405, CVE-2017-1000365, CVE-2017-2618, CVE-2017-7482
MD5 | 23e15cb3b383412d96b020c0af37f828
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
MD5 | 2a81ab5a406b26495cf15b17d009be23
Red Hat Security Advisory 2017-0933-01
Posted Apr 12, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0933-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. These updated kernel packages include several security issues and numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2016-8650, CVE-2016-9793, CVE-2017-2618, CVE-2017-2636
MD5 | 92b6c1ead0c3ceb49666ec6193c36f53
Red Hat Security Advisory 2017-0932-01
Posted Apr 12, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0932-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: A race condition flaw was found in the N_HLDC Linux kernel driver when accessing n_hdlc.tbuf list that can lead to double free. A local, unprivileged user able to set the HDLC line discipline on the tty device could use this flaw to increase their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2016-8650, CVE-2016-9793, CVE-2017-2618, CVE-2017-2636, CVE-2017-6074
MD5 | 48accb75669589d0b6dfb8ef97c3255d
Red Hat Security Advisory 2017-0931-01
Posted Apr 12, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0931-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: A race condition flaw was found in the N_HLDC Linux kernel driver when accessing n_hdlc.tbuf list that can lead to double free. A local, unprivileged user able to set the HDLC line discipline on the tty device could use this flaw to increase their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2016-8650, CVE-2016-9793, CVE-2017-2618, CVE-2017-2636
MD5 | 4723f64515a3a4c68c702d9f55239041
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
MD5 | 68653b8767a22eadb7cf331b1f8daa59
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