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USN-2949-1 Linux kernel (Vivid HWE) vulnerabilities | Cloud Foundry

Description

USN-2949-1 Linux kernel (Vivid HWE) vulnerabilities # Low/Medium # Vendor Canonical Ubuntu # Versions Affected * Canonical Ubuntu 14.04 LTS # Description Venkatesh Pottem discovered a use-after-free vulnerability in the Linux kernel’s CXGB3 driver. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. ([CVE-2015-8812](<http://people.ubuntu.com/~ubuntu-security/cve/CVE-2015-8812>)) Xiaofei Rex Guo discovered a timing side channel vulnerability in the Linux Extended Verification Module (EVM). An attacker could use this to affect system integrity. ([CVE-2016-2085](<http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-2085>)) David Herrmann discovered that the Linux kernel incorrectly accounted file descriptors to the original opener for in-flight file descriptors sent over a unix domain socket. A local attacker could use this to cause a denial of service (resource exhaustion). ([CVE-2016-2550](<http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-2550>)) It was discovered that the Linux kernel did not enforce limits on the amount of data allocated to buffer pipes. A local attacker could use this to cause a denial of service (resource exhaustion). ([CVE-2016-2847](<http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-2847>)) # Affected Products and Versions _Severity is low/medium unless otherwise noted. _ * Cloud Foundry BOSH stemcells 3146.x versions prior to 3146.11 AND other versions prior to 3215.4 are vulnerable # Mitigation Users of affected versions should apply the following mitigation: * The Cloud Foundry project recommends that Cloud Foundry upgrade BOSH stemcell 3146.x versions to 3146.11 OR other versions to 3232.2 # Credit Venkatesh Pottem, Xiaofei Rex Guo, David Herrmann # References * <http://www.ubuntu.com/usn/usn-2949-1/> * <http://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-8812.html> * <http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2085.html> * <http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2550.html> * <http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2847.html>


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