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Ubuntu 10.04 LTS: USN-2415-1 High Risk: Kernel Denial Of Service

ubuntu
Calendar Grey November 25, 2014
Dist Ubuntu Esm H88
Ubuntu Security Announcement USN-2416-1 highlights a kernel flaw impacting file read permissions in Ubuntu 12.04 LTS.
The system could be made to deny write access to files.

Summary

The system could be made to deny write access to files.

Software Description:

- linux: Linux kernel

Details:

Andy Lutomirski discovered that the Linux kernel was not checking the

CAP_SYS_ADMIN when remounting filesystems to read-only. A local user could

exploit this flaw to cause a denial of service (loss of writability).

Topics%20covered

Topics Covered

security advisory denial of service high severity access issue Ubuntu kernel

Update Instructions

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

Ubuntu 10.04 LTS:
  linux-image-2.6.32-68-386       2.6.32-68.135
  linux-image-2.6.32-68-generic   2.6.32-68.135
  linux-image-2.6.32-68-generic-pae  2.6.32-68.135
  linux-image-2.6.32-68-ia64      2.6.32-68.135
  linux-image-2.6.32-68-lpia      2.6.32-68.135
  linux-image-2.6.32-68-powerpc   2.6.32-68.135
  linux-image-2.6.32-68-powerpc-smp  2.6.32-68.135
  linux-image-2.6.32-68-powerpc64-smp  2.6.32-68.135
  linux-image-2.6.32-68-preempt   2.6.32-68.135
  linux-image-2.6.32-68-server    2.6.32-68.135
  linux-image-2.6.32-68-sparc64   2.6.32-68.135
  linux-image-2.6.32-68-sparc64-smp  2.6.32-68.135
  linux-image-2.6.32-68-versatile  2.6.32-68.135
  linux-image-2.6.32-68-virtual   2.6.32-68.135

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-2415-1

CVE-2014-7975

November 25, 2014

Topics%20covered

Topics Covered

security advisory denial of service high severity access issue Ubuntu kernel

Package Information

https://launchpad.net/ubuntu/+source/linux/2.6.32-68.135

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