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Ubuntu Security Notice USN-1363-1

Posted Feb 13, 2012

Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1363-1 - A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtual interrupt control is not available a local user could use this to cause a denial of service by starting a timer. A flaw was discovered in the XFS filesystem. If a local user mounts a specially crafted XFS image it could potential execute arbitrary code on the system. Andy Whitcroft discovered a that the Overlayfs filesystem was not doing the extended permission checks needed by cgroups and Linux Security Modules (LSMs). A local user could exploit this to by-pass security policy and access files that should not be accessible. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local

systems | linux, ubuntu

advisories | CVE-2011-4622, CVE-2012-0038, CVE-2012-0055, CVE-2012-0207, CVE-2011-4622, CVE-2012-0038, CVE-2012-0055, CVE-2012-0207

SHA-256 | 00db81ad81883140a2fb9f8a3cf95426da7934bf25c0269359abe6ac6c16194c

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