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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.3153 Linux kernel vulnerabilities 8 December 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Root Compromise -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-1000405 CVE-2017-16939 CVE-2017-15951 CVE-2017-15306 CVE-2017-15299 CVE-2017-15265 CVE-2017-12193 CVE-2017-12146 Reference: ESB-2017.3143 ESB-2017.3129 ESB-2017.3104 Original Bulletin: https://lists.ubuntu.com/archives/ubuntu-security-announce/ http://www.ubuntu.com/usn/usn-3511-1 http://www.ubuntu.com/usn/usn-3507-2 http://www.ubuntu.com/usn/usn-3508-2 Comment: This bulletin contains four (4) Ubuntu security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Kernel Live Patch Security Notice LSN-0033-1 December 07, 2017 linux vulnerability ========================================================================== A security issue affects these releases of Ubuntu: | Series | Base kernel | Arch | flavors | |------------------+--------------+----------+------------------| | Ubuntu 16.04 LTS | 4.4.0 | amd64 | generic | | Ubuntu 16.04 LTS | 4.4.0 | amd64 | lowlatency | | Ubuntu 14.04 LTS | 4.4.0 | amd64 | generic | | Ubuntu 14.04 LTS | 4.4.0 | amd64 | lowlatency | Summary: Several security issues were fixed in the kernel. Software Description: - - linux: Linux kernel Details: Mohamed Ghannam discovered that a use-after-free vulnerability existed in the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16939) It was discovered that the Linux kernel did not properly handle copy-on- write of transparent huge pages. A local attacker could use this to cause a denial of service (application crashes) or possibly gain administrative privileges. (CVE-2017-1000405) It was discovered that a race condition existed in the ALSA subsystem of the Linux kernel when creating and deleting a port via ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15265) Update instructions: The problem can be corrected by updating your livepatches to the following versions: | Kernel | Version | flavors | |-----------------+----------+--------------------------| | 4.4.0-101.124 | 33.2 | generic, lowlatency | | 4.4.0-21.37 | 33.2 | generic, lowlatency | | 4.4.0-22.39 | 33.2 | generic, lowlatency | | 4.4.0-22.40 | 33.2 | generic, lowlatency | | 4.4.0-24.43 | 33.2 | generic, lowlatency | | 4.4.0-28.47 | 33.2 | generic, lowlatency | | 4.4.0-31.50 | 33.2 | generic, lowlatency | | 4.4.0-34.53 | 33.2 | generic, lowlatency | | 4.4.0-36.55 | 33.2 | generic, lowlatency | | 4.4.0-38.57 | 33.2 | generic, lowlatency | | 4.4.0-42.62 | 33.2 | generic, lowlatency | | 4.4.0-43.63 | 33.2 | generic, lowlatency | | 4.4.0-45.66 | 33.2 | generic, lowlatency | | 4.4.0-47.68 | 33.2 | generic, lowlatency | | 4.4.0-51.72 | 33.2 | generic, lowlatency | | 4.4.0-53.74 | 33.2 | generic, lowlatency | | 4.4.0-57.78 | 33.2 | generic, lowlatency | | 4.4.0-59.80 | 33.2 | generic, lowlatency | | 4.4.0-62.83 | 33.2 | generic, lowlatency | | 4.4.0-63.84 | 33.2 | generic, lowlatency | | 4.4.0-64.85 | 33.2 | generic, lowlatency | | 4.4.0-66.87 | 33.2 | generic, lowlatency | | 4.4.0-67.88 | 33.2 | generic, lowlatency | | 4.4.0-70.91 | 33.2 | generic, lowlatency | | 4.4.0-71.92 | 33.2 | generic, lowlatency | | 4.4.0-72.93 | 33.2 | generic, lowlatency | | 4.4.0-75.96 | 33.2 | generic, lowlatency | | 4.4.0-77.98 | 33.2 | generic, lowlatency | | 4.4.0-78.99 | 33.2 | generic, lowlatency | | 4.4.0-79.100 | 33.2 | generic, lowlatency | | 4.4.0-81.104 | 33.2 | generic, lowlatency | | 4.4.0-83.106 | 33.2 | generic, lowlatency | | 4.4.0-87.110 | 33.2 | generic, lowlatency | | 4.4.0-89.112 | 33.2 | generic, lowlatency | | 4.4.0-91.114 | 33.2 | generic, lowlatency | | 4.4.0-92.115 | 33.2 | generic, lowlatency | | 4.4.0-93.116 | 33.2 | generic, lowlatency | | 4.4.0-96.119 | 33.2 | generic, lowlatency | | 4.4.0-97.120 | 32.2 | generic, lowlatency | | 4.4.0-97.120 | 33.2 | generic, lowlatency | | 4.4.0-98.121 | 33.2 | generic, lowlatency | | lts-4.4.0-101.124_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-21.37_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-22.39_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-22.40_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-24.43_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-28.47_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-31.50_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-34.53_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-36.55_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-38.57_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-42.62_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-45.66_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-47.68_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-51.72_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-53.74_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-57.78_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-59.80_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-62.83_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-63.84_14.04.2-lts-xenial | 14.04.2 | generic, lowlatency | | lts-4.4.0-64.85_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-66.87_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-67.88_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-70.91_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-71.92_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-72.93_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-75.96_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-78.99_14.04.2-lts-xenial | 14.04.2 | generic, lowlatency | | lts-4.4.0-79.100_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-81.104_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-83.106_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-87.110_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-89.112_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-91.114_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-92.115_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-93.116_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-96.119_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-97.120_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | | lts-4.4.0-98.121_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency | Additionally, you should install an updated kernel with these fixes and reboot at your convienience. References: CVE-2017-1000405, CVE-2017-15265, CVE-2017-16939 - ----------------------------------------------------------------------------- ========================================================================== Ubuntu Security Notice USN-3511-1 December 08, 2017 linux-azure vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 16.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux-azure: Linux kernel for Microsoft Azure Cloud systems Details: Mohamed Ghannam discovered that a use-after-free vulnerability existed in the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16939) It was discovered that the Linux kernel did not properly handle copy-on- write of transparent huge pages. A local attacker could use this to cause a denial of service (application crashes) or possibly gain administrative privileges. (CVE-2017-1000405) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.11.0-1016-azure 4.11.0-1016.16 linux-image-azure 4.11.0.1016.16 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://www.ubuntu.com/usn/usn-3511-1 CVE-2017-1000405, CVE-2017-16939 Package Information: https://launchpad.net/ubuntu/+source/linux-azure/4.11.0-1016.16 - ------------------------------------------------------------------------------- ========================================================================== Ubuntu Security Notice USN-3508-2 December 07, 2017 linux-hwe vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 16.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux-hwe: Linux hardware enablement (HWE) kernel Details: USN-3508-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. Mohamed Ghannam discovered that a use-after-free vulnerability existed in the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16939) It was discovered that the Linux kernel did not properly handle copy-on- write of transparent huge pages. A local attacker could use this to cause a denial of service (application crashes) or possibly gain administrative privileges. (CVE-2017-1000405) Yonggang Guo discovered that a race condition existed in the driver subsystem in the Linux kernel. A local attacker could use this to possibly gain administrative privileges. (CVE-2017-12146) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.10.0-42-generic 4.10.0-42.46~16.04.1 linux-image-4.10.0-42-generic-lpae 4.10.0-42.46~16.04.1 linux-image-4.10.0-42-lowlatency 4.10.0-42.46~16.04.1 linux-image-generic-hwe-16.04 4.10.0.42.44 linux-image-generic-lpae-hwe-16.04 4.10.0.42.44 linux-image-lowlatency-hwe-16.04 4.10.0.42.44 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://www.ubuntu.com/usn/usn-3508-2 https://www.ubuntu.com/usn/usn-3508-1 CVE-2017-1000405, CVE-2017-12146, CVE-2017-16939 Package Information: https://launchpad.net/ubuntu/+source/linux-hwe/4.10.0-42.46~16.04.1 - ----------------------------------------------------------------------------- ========================================================================== Ubuntu Security Notice USN-3507-2 December 08, 2017 linux-gcp vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 16.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems Details: Mohamed Ghannam discovered that a use-after-free vulnerability existed in the Netlink subsystem (XFRM) in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16939) It was discovered that the Linux kernel did not properly handle copy-on- write of transparent huge pages. A local attacker could use this to cause a denial of service (application crashes) or possibly gain administrative privileges. (CVE-2017-1000405) Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array implementation in the Linux kernel sometimes did not properly handle adding a new entry. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-12193) Eric Biggers discovered that the key management subsystem in the Linux kernel did not properly restrict adding a key that already exists but is uninstantiated. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15299) It was discovered that a null pointer dereference error existed in the PowerPC KVM implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-15306) Eric Biggers discovered a race condition in the key management subsystem of the Linux kernel around keys in a negative state. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15951) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.13.0-1002-gcp 4.13.0-1002.5 linux-image-gcp 4.13.0.1002.4 linux-image-gke 4.13.0.1002.4 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://www.ubuntu.com/usn/usn-3507-2 https://www.ubuntu.com/usn/usn-3507-1 CVE-2017-1000405, CVE-2017-12193, CVE-2017-15299, CVE-2017-15306, CVE-2017-15951, CVE-2017-16939 Package Information: https://launchpad.net/ubuntu/+source/linux-gcp/4.13.0-1002.5 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWionbIx+lLeg9Ub1AQjYYA/8CQuJ+bW67AXCbAjdcVsFxZs3ksa+YrKY JQP459juLFrOpte/BdlQd2P2YDRgJx5CyYg/ZuiI0gZutnlIq7hFmFFTHknsawjk D5pST55cT+vTabbLzQ3BWgfOd+DUd3NoqtGKTI0j8qCv6S6eK7EmVwBWypSxWfyc j4EyL9fFd6QAXK8C1wUR4OMqwTny/4blhf6ciDcGbPAra2ThO079X3HHmLij0tZE AdQPBIiBF9JgwpAI78RjgYITh11xnrpa7fyCl5AoarDACJlNmuz0cuL5yrNSQBJz OBvPbB4LaAvTSqH9dO5MTmJFK4Vk80HA5tWS2+VoSBhUp+Kj1m6c0OeUlQnHkdBp k8zeE3xt2VYwHsZ0Foynj3Xxe5BZzPmO1/i4EVNk+lPC2JtwbVfk1EONtZ06jc0T eK/0zGiiGq7hxhleEjkTYwuLach54Z9lOrfHWinARDtJUhpuaCH+VJS7Q2q0kVl0 c0pUHoViJwRcMaQvSLUFSyXW7Y68RH2cWFEYF3sVl71t+9gn5+ctkSlf5jvBJDyb C7kFYDj5WMzIN5xhAnSVr8vfrotjbXGyLsC9hxnILpMFTgjw6lzwntoJG7PJ2izU F5qTZbgEl5GmzvTaO1JvSLq4fJCl99YelnXqWqfXaMKNM/AJqIR6okZCX80vYlNb 8mWUj8jebyc= =jrbL -----END PGP SIGNATURE-----