Advisory Published

USN-1457-1: Linux kernel vulnerabilities

First published: Thu May 31 2012(Updated: )

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. (CVE-2011-4131) A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. (CVE-2012-1601) A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. (CVE-2012-2121) Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier. (CVE-2012-2123) Schacher Raindel discovered a flaw in the Linux kernel's memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. (CVE-2012-2133)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-2.6.38-15-powerpc<2.6.38-15.60
2.6.38-15.60
=11.04
All of
ubuntu/linux-image-2.6.38-15-omap<2.6.38-15.60
2.6.38-15.60
=11.04
All of
ubuntu/linux-image-2.6.38-15-generic-pae<2.6.38-15.60
2.6.38-15.60
=11.04
All of
ubuntu/linux-image-2.6.38-15-server<2.6.38-15.60
2.6.38-15.60
=11.04
All of
ubuntu/linux-image-2.6.38-15-powerpc64-smp<2.6.38-15.60
2.6.38-15.60
=11.04
All of
ubuntu/linux-image-2.6.38-15-virtual<2.6.38-15.60
2.6.38-15.60
=11.04
All of
ubuntu/linux-image-2.6.38-15-versatile<2.6.38-15.60
2.6.38-15.60
=11.04
All of
ubuntu/linux-image-2.6.38-15-generic<2.6.38-15.60
2.6.38-15.60
=11.04
All of
ubuntu/linux-image-2.6.38-15-powerpc-smp<2.6.38-15.60
2.6.38-15.60
=11.04

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