SECURITY

USN-2930-2: Linux kernel (Wily HWE) vulnerabilities Ubuntu Security Notice USN-2930-2 14th March, 2016 linux-lts-wily 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-lts-wily – Linux hardware enablement kernel from Wily for Trusty Details Ben Hawkes discovered that the Linux netfilter implementation did notcorrectly perform validation when handling IPT_SO_SET_REPLACE events. Alocal unprivileged attacker could use this to cause a denial of service(system crash) or possibly execute arbitrary code with administrativeprivileges. (CVE-2016-3134) Ben Hawkes discovered an integer overflow in the Linux netfilterimplementation. On systems running 32 bit kernels, a local unprivilegedattacker could use this to cause a denial of service (system crash) orpossibly execute arbitrary code with administrative privileges.(CVE-2016-3135) Ralf Spenneberg discovered that the USB driver for Clie devices in theLinux kernel did not [ more… ]

USN-2928-1: Linux kernel vulnerability Ubuntu Security Notice USN-2928-1 14th March, 2016 linux vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.04 LTS Summary The system could be made to crash or run programs as an administrator by someone with physical access. Software description linux – Linux kernel Details Andrey Konovalov discovered that the ALSA USB MIDI driver incorrectlyperformed a double-free. A local attacker with physical access could usethis to cause a denial of service (system crash) or possibly executearbitrary code with administrative privileges. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 12.04 LTS: linux-image-3.2.0-101-omap 3.2.0-101.141 linux-image-3.2.0-101-powerpc64-smp 3.2.0-101.141 linux-image-3.2.0-101-highbank 3.2.0-101.141 linux-image-3.2.0-101-powerpc-smp 3.2.0-101.141 linux-image-3.2.0-101-generic 3.2.0-101.141 linux-image-3.2.0-101-virtual 3.2.0-101.141 linux-image-3.2.0-101-generic-pae 3.2.0-101.141 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to reboot your [ more… ]

USN-2929-1: Linux kernel vulnerabilities Ubuntu Security Notice USN-2929-1 14th March, 2016 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 Ben Hawkes discovered that the Linux netfilter implementation did notcorrectly perform validation when handling IPT_SO_SET_REPLACE events. Alocal unprivileged attacker could use this to cause a denial of service(system crash) or possibly execute arbitrary code with administrativeprivileges. (CVE-2016-3134) It was discovered that the Linux kernel did not properly enforce rlimitsfor file descriptors sent over UNIX domain sockets. A local attacker coulduse this to cause a denial of service. (CVE-2013-4312) Ralf Spenneberg discovered that the USB driver for Clie devices in theLinux kernel did not properly sanity check the endpoints reported by thedevice. An attacker with physical access could [ more… ]

USN-2928-2: Linux kernel (OMAP4) vulnerability Ubuntu Security Notice USN-2928-2 14th March, 2016 linux-ti-omap4 vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.04 LTS Summary The system could be made to crash or run programs as an administrator by someone with physical access. Software description linux-ti-omap4 – Linux kernel for OMAP4 Details Andrey Konovalov discovered that the ALSA USB MIDI driver incorrectlyperformed a double-free. A local attacker with physical access could usethis to cause a denial of service (system crash) or possibly executearbitrary code with administrative privileges. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 12.04 LTS: linux-image-3.2.0-1479-omap4 3.2.0-1479.105 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 makeall the necessary changes. ATTENTION: Due to [ more… ]

USN-2927-1: graphite2 vulnerabilities Ubuntu Security Notice USN-2927-1 14th March, 2016 graphite2 vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 15.10 Ubuntu 14.04 LTS Summary graphite2 could be made to crash or run programs as your login if it opened a specially crafted font. Software description graphite2 – Font rendering engine for Complex Scripts Details It was discovered that graphite2 incorrectly handled certain malformedfonts. If a user or automated system were tricked into opening a specially-crafted font file, a remote attacker could use this issue to causegraphite2 to crash, resulting in a denial of service, or possibly executearbitrary code. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 15.10: libgraphite2-3 1.3.6-1ubuntu0.15.10.1 Ubuntu 14.04 LTS: libgraphite2-3 1.3.6-1ubuntu0.14.04.1 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. This update uses [ more… ]