Merge ~bromer/usn.ubuntu.com/+git/lsn:lsn into usn.ubuntu.com:master

[Ben Romer]

New livepatch, released yesterday.

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+---
+title: "LSN-0072-1: Kernel Live Patch Security Notice"
+permalink: /lsn/0072-1/index.html
+releases: [ubuntu-14.04-esm,ubuntu-16.04-lts,ubuntu-20.04-lts,ubuntu-18.04-lts]
+date: 2020-10-14 12:08:21
+description: "Several security issues were fixed in the kernel."
+---
+
+## Linux kernel vulnerabilities
+
+A security issue affects these releases of Ubuntu and its derivatives:
+
+* Ubuntu 18.04 LTS
+* Ubuntu 20.04 LTS
+* Ubuntu 16.04 LTS
+* Ubuntu 14.04 ESM
+
+### Summary
+
+Several security issues were fixed in the kernel.
+
+### Software Description
+
+* linux -  Linux kernel 
+* linux-aws -  Linux kernel for Amazon Web Services (AWS) systems 
+* linux-azure -  Linux kernel for Microsoft Azure Cloud systems 
+* linux-gcp -  Linux kernel for Google Cloud Platform (GCP) systems 
+* linux-oem -  Linux kernel for OEM systems 
+
+### Details
+
+It was discovered that the F2FS file system implementation in the Linux
+kernel did not properly perform bounds checking on xattrs in some
+situations. A local attacker could possibly use this to expose sensitive
+information (kernel memory). (CVE-2020-0067)
+
+It was discovered that the Serial CAN interface driver in the Linux kernel
+did not properly initialize data. A local attacker could use this to expose
+sensitive information (kernel memory). (CVE-2020-11494)
+
+Mauricio Faria de Oliveira discovered that the aufs implementation in the
+Linux kernel improperly managed inode reference counts in the
+vfsub_dentry_open() method. A local attacker could use this vulnerability
+to cause a denial of service. (CVE-2020-11935)
+
+Piotr Krysiuk discovered that race conditions existed in the file system
+implementation in the Linux kernel. A local attacker could use this to
+cause a denial of service (system crash). (CVE-2020-12114)
+
+Or Cohen discovered that the AF_PACKET implementation in the Linux kernel
+did not properly perform bounds checking in some situations. A local
+attacker could use this to cause a denial of service (system crash) or
+possibly execute arbitrary code. (CVE-2020-14386)
+
+Hador Manor discovered that the DCCP protocol implementation in the Linux
+kernel improperly handled socket reuse, leading to a use-after-free
+vulnerability. A local attacker could use this to cause a denial of service
+(system crash) or possibly execute arbitrary code. (CVE-2020-16119)
+
+Giuseppe Scrivano discovered that the overlay file system in the Linux
+kernel did not properly perform permission checks in some situations. A
+local attacker could possibly use this to bypass intended restrictions and
+gain read access to restricted files. (CVE-2020-16120)
+
+## Update instructions
+
+The problem can be corrected by updating your kernel livepatch to the following
+versions:
+
+Ubuntu 18.04 LTS
+: aws - 72.1
+: generic - 72.1
+: lowlatency - 72.1
+: oem - 72.1
+
+Ubuntu 20.04 LTS
+: aws - 72.1
+: aws - 72.2
+: azure - 72.1
+: azure - 72.2
+: gcp - 72.1
+: gcp - 72.2
+: generic - 72.1
+: generic - 72.2
+: lowlatency - 72.1
+: lowlatency - 72.2
+
+Ubuntu 16.04 LTS
+: aws - 72.1
+: generic - 72.1
+: lowlatency - 72.1
+
+Ubuntu 14.04 ESM
+: generic - 72.1
+: lowlatency - 72.1
+
+## Support Information
+
+Kernels older than the levels listed below do not receive livepatch 
+updates. If you are running a kernel version earlier than the one listed
+below, please upgrade your kernel as soon as possible.
+
+Ubuntu 18.04 LTS
+: linux-aws - 4.15.0-1054
+: linux-azure - 5.0.0-1025
+: linux-gcp - 5.0.0-1025
+: linux-oem - 4.15.0-1063
+: linux-oracle - 5.0.0-1000
+: linux - 4.15.0-69
+
+Ubuntu 20.04 LTS
+: linux-aws - 5.4.0-1009
+: linux-azure - 5.4.0-1010
+: linux-gcp - 5.4.0-1009
+: linux-oem - 5.4.0-26
+: linux - 5.4.0-26
+
+Ubuntu 16.04 LTS
+: linux-aws - 4.4.0-1098
+: linux-azure - 4.15.0-1063
+: linux-hwe - 4.15.0-69
+: linux - 4.4.0-168
+
+Ubuntu 14.04 ESM
+: linux-lts-xenial - 4.4.0-168
+
+## References
+
+* [CVE-2020-0067](https://people.canonical.com/~ubuntu-security/cve/CVE-2020-0067)
+* [CVE-2020-11494](https://people.canonical.com/~ubuntu-security/cve/CVE-2020-11494)
+* [CVE-2020-11935](https://people.canonical.com/~ubuntu-security/cve/CVE-2020-11935)
+* [CVE-2020-12114](https://people.canonical.com/~ubuntu-security/cve/CVE-2020-12114)
+* [CVE-2020-14386](https://people.canonical.com/~ubuntu-security/cve/CVE-2020-14386)
+* [CVE-2020-16119](https://people.canonical.com/~ubuntu-security/cve/CVE-2020-16119)
+* [CVE-2020-16120](https://people.canonical.com/~ubuntu-security/cve/CVE-2020-16120)