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CVE-2017-11176

Status Candidate

Overview

The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.

Related Files

Ubuntu Security Notice USN-3405-2
Posted Aug 28, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3405-2 - USN-3405-1 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 a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel. 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, vulnerability
systems | linux, osx, ubuntu
advisories | CVE-2015-7837, CVE-2017-11176, CVE-2017-7495, CVE-2017-7541
MD5 | be8ba4251d1774d576a5d0cbdadc62c4
Ubuntu Security Notice USN-3405-1
Posted Aug 28, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3405-1 - It was discovered that a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Huang Weller discovered that the ext4 filesystem implementation in the Linux kernel mishandled a needs-flushing-before-commit list. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, osx, ubuntu
advisories | CVE-2015-7837, CVE-2017-11176, CVE-2017-7495, CVE-2017-7541
MD5 | 179b8f597770848ddee280743b07f0a7
Debian Security Advisory 3927-1
Posted Aug 7, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3927-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2017-1000365, CVE-2017-10810, CVE-2017-10911, CVE-2017-11176, CVE-2017-7346, CVE-2017-7482, CVE-2017-7533, CVE-2017-7541, CVE-2017-7542, CVE-2017-9605
MD5 | 5e3f1d4849e961f4980564d78956a77b
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