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Ubuntu 10.04 LTS USN-1433-1 Critical: Linux Kernel Denial of Service

ubuntu
Calendar Grey May 1, 2012
Scroller Ubuntu
Ubuntu 20.04 LTS addresses significant issues within the Linux kernel; immediate updates and a restart of the system are essential for safety.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-backport-oneiric: Linux kernel backport from Oneiric

Details:

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 An...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service update critical Ubuntu Linux kernel flaw

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 10.04 LTS:
  linux-image-3.0.0-19-generic    3.0.0-19.33~lucid1
  linux-image-3.0.0-19-generic-pae  3.0.0-19.33~lucid1
  linux-image-3.0.0-19-server     3.0.0-19.33~lucid1
  linux-image-3.0.0-19-virtual    3.0.0-19.33~lucid1

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

https://ubuntu.com/security/notices/USN-1433-1

CVE-2011-4086, CVE-2011-4347, CVE-2012-0045, CVE-2012-1090,

CVE-2012-1097, CVE-2012-1146, CVE-2012-1179

Severity
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Critical

May 01, 2012

Topics%20covered

Topics Covered

security advisory denial of service update critical Ubuntu Linux kernel flaw

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-19.33~lucid1

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