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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.4539 USN-4210-1: Linux kernel vulnerabilities 3 December 2019 =========================================================================== 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-2019-19075 CVE-2019-19065 CVE-2019-19060 CVE-2019-17133 CVE-2019-17075 CVE-2019-16746 Reference: ESB-2019.4537 ESB-2019.4040 Original Bulletin: https://usn.ubuntu.com/4210-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4210-1: Linux kernel vulnerabilities 3 December 2019 linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS Summary Several security issues were fixed in the Linux kernel. Software Description o linux - Linux kernel o linux-aws - Linux kernel for Amazon Web Services (AWS) systems o linux-gke-4.15 - Linux kernel for Google Container Engine (GKE) systems o linux-kvm - Linux kernel for cloud environments o linux-oem - Linux kernel for OEM processors o linux-oracle - Linux kernel for Oracle Cloud systems o linux-raspi2 - Linux kernel for Raspberry Pi 2 o linux-snapdragon - Linux kernel for Snapdragon processors o linux-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems o linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems o linux-hwe - Linux hardware enablement (HWE) kernel Details It was discovered that a buffer overflow existed in the 802.11 Wi-Fi configuration interface for the Linux kernel when handling beacon settings. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-16746) Nicolas Waisman discovered that the WiFi driver stack in the Linux kernel did not properly validate SSID lengths. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2019-17133) It was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19060) It was discovered that the Intel OPA Gen1 Infiniband Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19065) It was discovered that the Cascoda CA8210 SPI 802.15.4 wireless controller driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19075) Nicolas Waisman discovered that the Chelsio T4/T5 RDMA Driver for the Linux kernel performed DMA from a kernel stack. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-17075) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS linux-image-4.15.0-1030-oracle - 4.15.0-1030.33 linux-image-4.15.0-1049-gke - 4.15.0-1049.52 linux-image-4.15.0-1051-kvm - 4.15.0-1051.51 linux-image-4.15.0-1052-raspi2 - 4.15.0-1052.56 linux-image-4.15.0-1056-aws - 4.15.0-1056.58 linux-image-4.15.0-1065-oem - 4.15.0-1065.75 linux-image-4.15.0-1069-snapdragon - 4.15.0-1069.76 linux-image-4.15.0-72-generic - 4.15.0-72.81 linux-image-4.15.0-72-generic-lpae - 4.15.0-72.81 linux-image-4.15.0-72-lowlatency - 4.15.0-72.81 linux-image-aws - 4.15.0.1056.57 linux-image-aws-lts-18.04 - 4.15.0.1056.57 linux-image-generic - 4.15.0.72.74 linux-image-generic-lpae - 4.15.0.72.74 linux-image-gke - 4.15.0.1049.52 linux-image-gke-4.15 - 4.15.0.1049.52 linux-image-kvm - 4.15.0.1051.51 linux-image-lowlatency - 4.15.0.72.74 linux-image-oem - 4.15.0.1065.69 linux-image-oracle - 4.15.0.1030.35 linux-image-oracle-lts-18.04 - 4.15.0.1030.35 linux-image-powerpc-e500mc - 4.15.0.72.74 linux-image-powerpc-smp - 4.15.0.72.74 linux-image-powerpc64-emb - 4.15.0.72.74 linux-image-powerpc64-smp - 4.15.0.72.74 linux-image-raspi2 - 4.15.0.1052.50 linux-image-snapdragon - 4.15.0.1069.72 linux-image-virtual - 4.15.0.72.74 Ubuntu 16.04 LTS linux-image-4.15.0-1030-oracle - 4.15.0-1030.33~16.04.1 linux-image-4.15.0-1050-gcp - 4.15.0-1050.53 linux-image-4.15.0-1056-aws - 4.15.0-1056.58~16.04.1 linux-image-4.15.0-72-generic - 4.15.0-72.81~16.04.1 linux-image-4.15.0-72-generic-lpae - 4.15.0-72.81~16.04.1 linux-image-4.15.0-72-lowlatency - 4.15.0-72.81~16.04.1 linux-image-aws-hwe - 4.15.0.1056.56 linux-image-gcp - 4.15.0.1050.64 linux-image-generic-hwe-16.04 - 4.15.0.72.92 linux-image-generic-lpae-hwe-16.04 - 4.15.0.72.92 linux-image-gke - 4.15.0.1050.64 linux-image-lowlatency-hwe-16.04 - 4.15.0.72.92 linux-image-oem - 4.15.0.72.92 linux-image-oracle - 4.15.0.1030.23 linux-image-virtual-hwe-16.04 - 4.15.0.72.92 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades . 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 o CVE-2019-16746 o CVE-2019-17075 o CVE-2019-17133 o CVE-2019-19060 o CVE-2019-19065 o CVE-2019-19075 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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