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CVE-2018-16884

Status Candidate

Overview

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.

Related Files

Ubuntu Security Notice USN-3981-2
Posted May 15, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3981-2 - USN-3981-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS and for the Linux Azure kernel for Ubuntu 14.04 LTS.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2018-16884, CVE-2019-11091, CVE-2019-3874, CVE-2019-3882, CVE-2019-9500, CVE-2019-9503
MD5 | e3d575c2a8e4c8f53addab94c8ad02a8
Ubuntu Security Notice USN-3980-2
Posted May 15, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3980-2 - USN-3980-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.10. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 18.10 for Ubuntu 18.04 LTS.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2018-16884, CVE-2019-11091, CVE-2019-3874, CVE-2019-3882, CVE-2019-3887, CVE-2019-9500, CVE-2019-9503
MD5 | 7cfee810146fd450b6342d5119f6ae1d
Ubuntu Security Notice USN-3981-1
Posted May 15, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3981-1 - Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Giorgi Maisuradze, Dan Horea Lutas, Andrei Lutas, Volodymyr Pikhur, Stephan van Schaik, Alyssa Milburn, Sebastian Ă–sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Moritz Lipp, Michael Schwarz, and Daniel Gruss discovered that memory previously stored in microarchitectural fill buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2018-16884, CVE-2019-11091, CVE-2019-3874, CVE-2019-3882, CVE-2019-9500, CVE-2019-9503
MD5 | f0906bb7f0f2086fbb32ea4d9c6cfb12
Ubuntu Security Notice USN-3980-1
Posted May 15, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3980-1 - Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Giorgi Maisuradze, Dan Horea Lutas, Andrei Lutas, Volodymyr Pikhur, Stephan van Schaik, Alyssa Milburn, Sebastian Ă–sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Moritz Lipp, Michael Schwarz, and Daniel Gruss discovered that memory previously stored in microarchitectural fill buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2018-16884, CVE-2019-11091, CVE-2019-3874, CVE-2019-3882, CVE-2019-3887, CVE-2019-9500, CVE-2019-9503
MD5 | 272b24f140a71c5e49da0eb1880e5f5d
Ubuntu Security Notice USN-3932-2
Posted Apr 3, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3932-2 - USN-3932-1 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 race condition existed in the f2fs file system implementation in the Linux kernel. 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-2017-18249, CVE-2018-14610, CVE-2018-14612, CVE-2018-14613, CVE-2018-14614, CVE-2018-14616, CVE-2018-16884, CVE-2018-9517, CVE-2019-3459, CVE-2019-3701, CVE-2019-3819, CVE-2019-6974, CVE-2019-7221, CVE-2019-7222, CVE-2019-9213
MD5 | c8aeb128181b7d8ea050f623d95a395e
Ubuntu Security Notice USN-3932-1
Posted Apr 3, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3932-1 - It was discovered that a race condition existed in the f2fs file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service. Wen Xu discovered that the f2fs file system implementation in the Linux kernel did not properly validate metadata. An attacker could use this to construct a malicious f2fs image that, when mounted, could cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-18249, CVE-2018-14610, CVE-2018-14612, CVE-2018-14613, CVE-2018-14614, CVE-2018-14616, CVE-2018-16884, CVE-2018-9517, CVE-2019-3459, CVE-2019-3701, CVE-2019-3819, CVE-2019-6974, CVE-2019-7221, CVE-2019-7222, CVE-2019-9213
MD5 | 8a7e323053a3b6c044afbb4d8c0594bb
Slackware Security Advisory - Slackware 14.2 kernel Updates
Posted Jan 31, 2019
Authored by Slackware Security Team | Site slackware.com

Slackware Security Advisory - New kernel packages are available for Slackware 14.2 to fix security issues.

tags | advisory, kernel
systems | linux, slackware
advisories | CVE-2017-18241, CVE-2017-18249, CVE-2018-10880, CVE-2018-1120, CVE-2018-12896, CVE-2018-13053, CVE-2018-13096, CVE-2018-13097, CVE-2018-13099, CVE-2018-13100, CVE-2018-14610, CVE-2018-14611, CVE-2018-14612, CVE-2018-14613, CVE-2018-14614, CVE-2018-14616, CVE-2018-14633, CVE-2018-16862, CVE-2018-16884, CVE-2018-17972, CVE-2018-18021, CVE-2018-18281, CVE-2018-18690, CVE-2018-18710, CVE-2018-19824, CVE-2018-19985
MD5 | 8236617ae0607e51011029f4f742813e
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