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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.3059 Linux kernel vulnerabilities 22 December 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Console/Physical Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2016-9555 CVE-2016-9313 CVE-2016-8645 CVE-2016-8633 CVE-2016-8630 CVE-2016-6213 Reference: ESB-2016.3019 ESB-2016.3005 ESB-2016.2941 ESB-2016.2918 Original Bulletin: http://www.ubuntu.com/usn/usn-3162-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3162-1 December 20, 2016 linux vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 16.10 Summary: Several security issues were fixed in the kernel. Software Description: - - linux: Linux kernel Details: 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) 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) It was discovered that the keyring implementation in the Linux kernel improperly handled crypto registration in conjunction with successful key- type registration. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-9313) 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) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.10: linux-image-4.8.0-32-generic 4.8.0-32.34 linux-image-4.8.0-32-generic-lpae 4.8.0-32.34 linux-image-4.8.0-32-lowlatency 4.8.0-32.34 linux-image-4.8.0-32-powerpc-e500mc 4.8.0-32.34 linux-image-4.8.0-32-powerpc-smp 4.8.0-32.34 linux-image-4.8.0-32-powerpc64-emb 4.8.0-32.34 linux-image-generic 4.8.0.32.41 linux-image-generic-lpae 4.8.0.32.41 linux-image-lowlatency 4.8.0.32.41 linux-image-powerpc-e500mc 4.8.0.32.41 linux-image-powerpc-smp 4.8.0.32.41 linux-image-powerpc64-emb 4.8.0.32.41 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-3162-1 CVE-2016-6213, CVE-2016-8630, CVE-2016-8633, CVE-2016-8645, CVE-2016-9313, CVE-2016-9555 Package Information: https://launchpad.net/ubuntu/+source/linux/4.8.0-32.34 - --------------------------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. 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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 iQIVAwUBWFsqBIx+lLeg9Ub1AQgF1Q//TPggOU7PIhJy+M9GIZ+a1RXEj1gYBHgI mH8ThYfRQGOFW0Awj9OMbqecQtK19GhEzJQjM5SCGxz9iT5KG+HhGvS0RULJq/ap wMgitDQs0PnU6n/c73PsOJkjQnYl7h1T6xPsoUzsc1FmYq46osYLverJkj3u3XJa uD5zPTIXy5uj5Vmzp5wRlWii/HOxlUSypvZvgpBxQ8dmhGXogXgSbVB1oFvuRlxV MFtTPHSlvNd3RXsYUVwZwA065hl3YBGca8zfNfG0OYVp2tvlZF5rh7WhyBt7G9eF nZyquSdF9IJRq1WATBh5YgdXGLkEFQ6eV7qW/Pu/TEYjw/0o1pu3fEbSqkAldFAX aPGTECy6Slwoh7kBkZ6GOHs4kYO6pnAhQORQafab6rBxn3RZ7j/kR8KPvNMtOr3D SOBNtwZzgGfVrBnOI6yZABs8syJYphdabGXtmALrrtBgDJfzSwTcb5uZ4rw0eHep z2mJLi3aNxy4d0B/mMkuwF6p4lNeVmHMMhLW5JPB6CzzNGKYdTRukE3FzpN0WHYa 5rbQoD6ZdyXVBz7h/Hoycmo/bYGpZayUDsWNIR3+tWp5jNbV+Wfekk3mrqC8ExIn e+hHHL1OKHCQ3ygtoa5ZSfCrVjOtf6HFY0cQldvx3x2KcFKU/m/xvSk0/yL4HgFV mrNs9RLAa0Y= =P7hQ -----END PGP SIGNATURE-----