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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1127 USN-3933-1/2: Linux kernel vulnerabilities 3 April 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: linux kernel Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Privileged Data -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-9213 CVE-2019-7222 CVE-2019-6974 CVE-2019-3460 CVE-2019-3459 CVE-2018-19824 CVE-2017-1000410 CVE-2017-18360 Reference: ESB-2019.1126 ESB-2019.1125 ESB-2019.1124 ESB-2019.1105 ESB-2019.1097 ESB-2019.1081 Original Bulletin: https://usn.ubuntu.com/3933-1/ https://usn.ubuntu.com/3933-2/ Comment: This bulletin contains two (2) advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- USN-3933-1: Linux kernel vulnerabilities 2 April 2019 A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 14.04 LTS Summary Several security issues were fixed in the Linux kernel. Software Description o linux - Linux kernel Details It was discovered that an information leak vulnerability existed in the Bluetooth implementation of the Linux kernel. An attacker within Bluetooth range could possibly expose sensitive information (kernel memory). (CVE-2017-1000410) It was discovered that the USB serial device driver in the Linux kernel did not properly validate baud rate settings when debugging is enabled. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18360) Mathias Payer and Hui Peng discovered a use-after-free vulnerability in the Advanced Linux Sound Architecture (ALSA) subsystem. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2018-19824) Shlomi Oberman, Yuli Shapiro, and Ran Menscher discovered an information leak in the Bluetooth implementation of the Linux kernel. An attacker within Bluetooth range could use this to expose sensitive information (kernel memory). (CVE-2019-3459, CVE-2019-3460) Jann Horn discovered that the KVM implementation in the Linux kernel contained a use-after-free vulnerability. An attacker in a guest VM with access to /dev/ kvm could use this to cause a denial of service (guest VM crash). (CVE-2019-6974) Felix Wilhelm discovered that an information leak vulnerability existed in the KVM subsystem of the Linux kernel, when nested virtualization is used. A local attacker could use this to expose sensitive information (host system memory to a guest VM). (CVE-2019-7222) Jann Horn discovered that the mmap implementation in the Linux kernel did not properly check for the mmap minimum address in some situations. A local attacker could use this to assist exploiting a kernel NULL pointer dereference vulnerability. (CVE-2019-9213) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS linux-image-3.13.0-168-generic - 3.13.0-168.218 linux-image-3.13.0-168-generic-lpae - 3.13.0-168.218 linux-image-3.13.0-168-lowlatency - 3.13.0-168.218 linux-image-3.13.0-168-powerpc-e500 - 3.13.0-168.218 linux-image-3.13.0-168-powerpc-e500mc - 3.13.0-168.218 linux-image-3.13.0-168-powerpc-smp - 3.13.0-168.218 linux-image-3.13.0-168-powerpc64-emb - 3.13.0-168.218 linux-image-3.13.0-168-powerpc64-smp - 3.13.0-168.218 linux-image-generic - 3.13.0.168.179 linux-image-generic-lpae - 3.13.0.168.179 linux-image-lowlatency - 3.13.0.168.179 linux-image-powerpc-e500 - 3.13.0.168.179 linux-image-powerpc-e500mc - 3.13.0.168.179 linux-image-powerpc-smp - 3.13.0.168.179 linux-image-powerpc64-emb - 3.13.0.168.179 linux-image-powerpc64-smp - 3.13.0.168.179 linux-image-virtual - 3.13.0.168.179 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-2017-1000410 o CVE-2017-18360 o CVE-2018-19824 o CVE-2019-3459 o CVE-2019-3460 o CVE-2019-6974 o CVE-2019-7222 o CVE-2019-9213 - -------------------------------------------------------------------------------- USN-3933-2: Linux kernel (Trusty HWE) vulnerabilities 2 April 2019 A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 12.04 ESM Summary Several security issues were fixed in the Linux kernel. Software Description o linux-lts-trusty - Linux hardware enablement kernel from Trusty for Precise ESM Details USN-3933-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 ESM. It was discovered that an information leak vulnerability existed in the Bluetooth implementation of the Linux kernel. An attacker within Bluetooth range could possibly expose sensitive information (kernel memory). (CVE-2017-1000410) It was discovered that the USB serial device driver in the Linux kernel did not properly validate baud rate settings when debugging is enabled. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18360) Mathias Payer and Hui Peng discovered a use-after-free vulnerability in the Advanced Linux Sound Architecture (ALSA) subsystem. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2018-19824) Shlomi Oberman, Yuli Shapiro, and Ran Menscher discovered an information leak in the Bluetooth implementation of the Linux kernel. An attacker within Bluetooth range could use this to expose sensitive information (kernel memory). (CVE-2019-3459, CVE-2019-3460) Jann Horn discovered that the KVM implementation in the Linux kernel contained a use-after-free vulnerability. An attacker in a guest VM with access to /dev/ kvm could use this to cause a denial of service (guest VM crash). (CVE-2019-6974) Felix Wilhelm discovered that an information leak vulnerability existed in the KVM subsystem of the Linux kernel, when nested virtualization is used. A local attacker could use this to expose sensitive information (host system memory to a guest VM). (CVE-2019-7222) Jann Horn discovered that the mmap implementation in the Linux kernel did not properly check for the mmap minimum address in some situations. A local attacker could use this to assist exploiting a kernel NULL pointer dereference vulnerability. (CVE-2019-9213) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM linux-image-3.13.0-168-generic - 3.13.0-168.218~precise1 linux-image-3.13.0-168-generic-lpae - 3.13.0-168.218~precise1 linux-image-3.13.0-168-lowlatency - 3.13.0-168.218~precise1 linux-image-generic-lpae-lts-trusty - 3.13.0.168.157 linux-image-generic-lts-trusty - 3.13.0.168.157 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 USN-3933-1 o CVE-2017-1000410 o CVE-2017-18360 o CVE-2018-19824 o CVE-2019-3459 o CVE-2019-3460 o CVE-2019-6974 o CVE-2019-7222 o CVE-2019-9213 - --------------------------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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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXKQt3maOgq3Tt24GAQgSfA/+PMqdjg+ZF6SDtoHFWMhNDfEJNNHpCIIG TxU+FGb45/gh98CzfjNl4MnDEqRln6Nk0ZnlN6sUvRb4e18KbcVz7ZzN/yEZe2/h PAvpj4MjRigwJ9RTSxj7RyYM3G9atfPTzJsuT1ae7uWFKsCCt+nK8fNT4t4TsxMB C+G6YCv/ozn4SV4JFJXtuHEH98MZs3Z+6BQAXEOSRPiHxUiUwFQB+gqTR9pRnLI2 3W2djNML2x4DNcpkK7jwBmwqsFYsRGPuWzZiwvvRF1W6sBf6FjAtE8o7kho4QdIP wYGI6ur62mVfLsxKx+ZQ+wtSZKyvgAdJpH1WnoZlBMxRKzfpiXYhrbHY4O/zjF5j 7yHFbQW32/u1ou1oK0KvGYqVkT37yzzNJ7a27D0Pmxqok9rE10yAU7lub1LCDd/X OShDX9eEbenLWBWg3hHWY3Mi0jzkEb/TsGWTvj/NYkoig7WUZUwQY63DCA/TKBuo n30ne5PodKff2eLncvSOswHVzi2NXdi4JS87fU878YHJoO+yIf2vdBP34GrZISDL t+QkHBUyrS7jH8XSHGBi40WSUxQ38G4eSPapNY6gqg0mhESjuCd4xJrZUxfdBTSg +Ico4kHrS9tRbQvyzrdZXnVGFyB919eVN8G2X//SeZbw08KveoubsDKWHq/sKNJ9 9FhN6QbpJDQ= =Aj3o -----END PGP SIGNATURE-----