Ubuntu alert USN-2843-3 (linux-raspi2)
| From: | Steve Beattie <steve.beattie@canonical.com> | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-2843-3] Linux kernel (Raspberry Pi 2) vulnerabilities | |
| Date: | Thu, 17 Dec 2015 11:43:24 -0800 | |
| Message-ID: | <20151217194324.GM3023@nxnw.org> |
========================================================================== Ubuntu Security Notice USN-2843-3 December 17, 2015 linux-raspi2 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 15.10 Summary: Several security issues were fixed in the kernel. Software Description: - linux-raspi2: Linux kernel for Raspberry Pi 2 Details: 郭永刚 discovered that the ppp implementation in the Linux kernel did not ensure that certain slot numbers are valid. A local attacker with the privilege to call ioctl() on /dev/ppp could cause a denial of service (system crash). (CVE-2015-7799) Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash). (CVE-2015-7872) It was discovered that the virtual video osd test driver in the Linux kernel did not properly initialize data structures. A local attacker could use this to obtain sensitive information from the kernel. (CVE-2015-7884) It was discovered that the driver for Digi Neo and ClassicBoard devices did not properly initialize data structures. A local attacker could use this to obtain sensitive information from the kernel. (CVE-2015-7885) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 15.10: linux-image-4.2.0-1016-raspi2 4.2.0-1016.23 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. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well. References: http://www.ubuntu.com/usn/usn-2843-3 http://www.ubuntu.com/usn/usn-2843-1 CVE-2015-7799, CVE-2015-7872, CVE-2015-7884, CVE-2015-7885 Package Information: https://launchpad.net/ubuntu/+source/linux-raspi2/4.2.0-1... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security...