Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.3058 Linux kernel (Qualcomm Snapdragon) vulnerabilities 22 December 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Increased Privileges -- Existing Account Execute Arbitrary Code/Commands -- Console/Physical Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2016-9644 CVE-2016-9555 CVE-2016-8658 CVE-2016-8645 CVE-2016-8633 CVE-2016-8630 CVE-2016-7425 CVE-2016-7097 CVE-2016-6213 CVE-2016-4568 CVE-2015-8964 Reference: ASB-2016.0103 ESB-2016.3019 ESB-2016.3005 ESB-2016.2941 ESB-2016.2918 Original Bulletin: http://www.ubuntu.com/usn/usn-3161-4 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3161-4 December 20, 2016 linux-snapdragon vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 16.04 LTS Summary: Several security issues were fixed in the kernel. Software Description: - - linux-snapdragon: Linux kernel for Snapdragon Processors Details: Tilman Schmidt and Sasha Levin discovered a use-after-free condition in the TTY implementation in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2015-8964) It was discovered that the Video For Linux Two (v4l2) implementation in the Linux kernel did not properly handle multiple planes when processing a VIDIOC_DQBUF ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2016-4568) CAI Qian discovered that shared bind mounts in a mount namespace exponentially added entries without restriction to the Linux kernel's mount table. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-6213) Andreas Gruenbacher and Jan Kara discovered that the filesystem implementation in the Linux kernel did not clear the setgid bit during a setxattr call. A local attacker could use this to possibly elevate group privileges. (CVE-2016-7097) Marco Grassi discovered that the driver for Areca RAID Controllers in the Linux kernel did not properly validate control messages. A local attacker could use this to cause a denial of service (system crash) or possibly gain privileges. (CVE-2016-7425) It was discovered that the KVM implementation for x86/x86_64 in the Linux kernel could dereference a null pointer. An attacker in a guest virtual machine could use this to cause a denial of service (system crash) in the KVM host. (CVE-2016-8630) Eyal Itkin discovered that the IP over IEEE 1394 (FireWire) implementation in the Linux kernel contained a buffer overflow when handling fragmented packets. A remote attacker could use this to possibly execute arbitrary code with administrative privileges. (CVE-2016-8633) Marco Grassi discovered that the TCP implementation in the Linux kernel mishandles socket buffer (skb) truncation. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-8645) Daxing Guo discovered a stack-based buffer overflow in the Broadcom IEEE802.11n FullMAC driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly gain privileges. (CVE-2016-8658) Andrey Konovalov discovered that the SCTP implementation in the Linux kernel improperly handled validation of incoming data. A remote attacker could use this to cause a denial of service (system crash). (CVE-2016-9555) It was discovered that the __get_user_asm_ex implementation in the Linux kernel for x86/x86_64 contained extended asm statements that were incompatible with the exception table. A local attacker could use this to gain administrative privileges. (CVE-2016-9644) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.4.0-1042-snapdragon 4.4.0-1042.46 linux-image-snapdragon 4.4.0.1042.34 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: http://www.ubuntu.com/usn/usn-3161-4 http://www.ubuntu.com/usn/usn-3161-1 CVE-2015-8964, CVE-2016-4568, CVE-2016-6213, CVE-2016-7097, CVE-2016-7425, CVE-2016-8630, CVE-2016-8633, CVE-2016-8645, CVE-2016-8658, CVE-2016-9555, CVE-2016-9644 Package Information: https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1042.46 - --------------------------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. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWFslVYx+lLeg9Ub1AQhmfw/+MY4yp2IC/hJ4s0dgSCIWHHJm5VJh6dNC GQCN7RINOKDdaovU1Ww+ep+Gu8ZuKRovQbls5wgu2glbLHA51K6UlZtNr3+anpDH OEsw7t5Ptorbx74riylWrreWRHLnCkzQrOYSCLj85nUZ4W+0oTmS8wu4tT0k0HBH IlVZlNlv4hvFvjjQjpTFDJAd3eGkPogW42MsirEVHLkkCPd1mgP/yvxFIB7rXSc/ F4Zjw5VlFtk4AXsrN2e+oKuGPJZXfPw3w5z6aPQdrszqvfu/HhoeOv2ErKNmFgw5 02pPoV4eS8ZTGe38bxRoHm63QskO8tESysUmxmSdWIs3yBefpXXMFON+7TBWMkpD 8p3zFOVJnI6oOnEjwqhgp2NhdbhgQdZy2+yfF7cZb7jQ50bFTgEznd2Ojv1Tt+1X hDQjr7g3kob9URqFfxv+qI7qvuG0hesm6JfV9A96j+umP05jDhc4wGniFI3S+sl9 FNFQMFmFDFvo2Q918wOfZ6iVIl1dR4TsjxNB84MKigka3ooIuoh9yZ3lmCjq99MA Zrug4zA+skTpErO+359JJzn7gpb1arxEpsLiMzIVoJcnC0qDNgjVu22bG6XM7AKO 6qTPeqRCLpsm+4y+mvI0R89wDsqnO+O3JC1rUT1MNicauRRunoDCxzY8nb8GeZpk StD5E1koWP8= =/W79 -----END PGP SIGNATURE-----