SECURITY

Ubuntu Security Notice USN-2841-2 17th December, 2015 linux-lts-trusty vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.04 LTS Summary Several security issues were fixed in the kernel. Software description linux-lts-trusty – Linux hardware enablement kernel from Trusty Details Jan Beulich discovered that the KVM svm hypervisor implementation in theLinux kernel did not properly catch Debug exceptions on AMD processors. Anattacker in a guest virtual machine could use this to cause a denial ofservice (system crash) in the host OS. (CVE-2015-8104) 郭永刚 discovered that the ppp implementation in the Linux kernel didnot ensure that certain slot numbers are valid. A local attacker with theprivilege to call ioctl() on /dev/ppp could cause a denial of service(system crash). (CVE-2015-7799) It was discovered that the driver for Digi Neo and ClassicBoard devices didnot properly initialize data structures. A local [ more… ]

Ubuntu Security Notice USN-2841-1 17th December, 2015 linux vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 14.04 LTS Summary Several security issues were fixed in the kernel. Software description linux – Linux kernel Details Jan Beulich discovered that the KVM svm hypervisor implementation in theLinux kernel did not properly catch Debug exceptions on AMD processors. Anattacker in a guest virtual machine could use this to cause a denial ofservice (system crash) in the host OS. (CVE-2015-8104) 郭永刚 discovered that the ppp implementation in the Linux kernel didnot ensure that certain slot numbers are valid. A local attacker with theprivilege to call ioctl() on /dev/ppp could cause a denial of service(system crash). (CVE-2015-7799) It was discovered that the driver for Digi Neo and ClassicBoard devices didnot properly initialize data structures. A local attacker could use this [ more… ]

Ubuntu Security Notice USN-2840-1 17th December, 2015 linux vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.04 LTS Summary Several security issues were fixed in the kernel. Software description linux – Linux kernel Details Dmitry Vyukov discovered that the Linux kernel's keyring handler attemptedto garbage collect incompletely instantiated keys. A local unprivilegedattacker could use this to cause a denial of service (system crash).(CVE-2015-7872) Jan Beulich discovered that the KVM svm hypervisor implementation in theLinux kernel did not properly catch Debug exceptions on AMD processors. Anattacker in a guest virtual machine could use this to cause a denial ofservice (system crash) in the host OS. (CVE-2015-8104) Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 12.04 LTS: linux-image-3.2.0-96-generic 3.2.0-96.136 linux-image-3.2.0-96-powerpc-smp 3.2.0-96.136 linux-image-3.2.0-96-virtual 3.2.0-96.136 linux-image-3.2.0-96-highbank 3.2.0-96.136 linux-image-3.2.0-96-omap 3.2.0-96.136 linux-image-3.2.0-96-generic-pae [ more… ]