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Ubuntu 14.04 LTS USN-2734-1 Critical: Kernel Crash Threat

ubuntu
Calendar Grey September 3, 2015
Scroller Ubuntu
A security flaw in the Linux kernel might enable system crashes or unauthorized admin entry. Users of Ubuntu 14.04 LTS must apply updates.
The system could be made to crash or run programs as an administrator.

Summary

The system could be made to crash or run programs as an administrator.

Software Description:

- linux: Linux kernel

Details:

It was discovered that an integer overflow error existed in the SCSI

generic (sg) driver in the Linux kernel. A local attacker with write

permission to a SCSI generic device could use this to cause a denial of

service (system crash) or potentially escalate their privileges.

Topics%20covered

Topics Covered

security advisory denial of service kernel ubuntu system crash

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-63-generic   3.13.0-63.103
  linux-image-3.13.0-63-generic-lpae  3.13.0-63.103
  linux-image-3.13.0-63-lowlatency  3.13.0-63.103
  linux-image-3.13.0-63-powerpc-e500  3.13.0-63.103
  linux-image-3.13.0-63-powerpc-e500mc  3.13.0-63.103
  linux-image-3.13.0-63-powerpc-smp  3.13.0-63.103
  linux-image-3.13.0-63-powerpc64-emb  3.13.0-63.103
  linux-image-3.13.0-63-powerpc64-smp  3.13.0-63.103

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-2734-1

CVE-2015-5707

Severity
critical
Lowest
Low
Medium
High
Critical

September 03, 2015

Topics%20covered

Topics Covered

security advisory denial of service kernel ubuntu system crash

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-63.103

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