Advisory Published

USN-1431-1: Linux kernel vulnerabilities

First published: Tue May 01 2012(Updated: )

A flaw was found in the Linux's kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service. (CVE-2011-4086) Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. (CVE-2011-4347) Stephan Bärwolf discovered a flaw in the KVM (kernel-based virtual machine) subsystem of the Linux kernel. A local unprivileged user can crash use this flaw to crash VMs causing a deny of service. (CVE-2012-0045) A flaw was discovered in the Linux kernel's cifs file system. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. (CVE-2012-1090) H. Peter Anvin reported a flaw in the Linux kernel that could crash the system. A local user could exploit this flaw to crash the system. (CVE-2012-1097) A flaw was discovered in the Linux kernel's cgroups subset. A local attacker could use this flaw to crash the system. (CVE-2012-1146) A flaw was found in the Linux kernel's handling of paged memory. A local unprivileged user, or a privileged user within a KVM guest, could exploit this flaw to crash the system. (CVE-2012-1179) Tetsuo Handa reported a flaw in the OOM (out of memory) killer of the Linux kernel. A local unprivileged user can exploit this flaw to cause system unstability and denial of services. (CVE-2012-4398)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-3.0.0-19-generic-pae<3.0.0-19.33
3.0.0-19.33
=11.10
All of
ubuntu/linux-image-3.0.0-19-powerpc<3.0.0-19.33
3.0.0-19.33
=11.10
All of
ubuntu/linux-image-3.0.0-19-server<3.0.0-19.33
3.0.0-19.33
=11.10
All of
ubuntu/linux-image-3.0.0-19-omap<3.0.0-19.33
3.0.0-19.33
=11.10
All of
ubuntu/linux-image-3.0.0-19-generic<3.0.0-19.33
3.0.0-19.33
=11.10
All of
ubuntu/linux-image-3.0.0-19-powerpc-smp<3.0.0-19.33
3.0.0-19.33
=11.10
All of
ubuntu/linux-image-3.0.0-19-powerpc64-smp<3.0.0-19.33
3.0.0-19.33
=11.10
All of
ubuntu/linux-image-3.0.0-19-virtual<3.0.0-19.33
3.0.0-19.33
=11.10

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