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=========================================================================Ubuntu Security Notice USN-2829-2
December 04, 2015

linux-lts-vivid vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-lts-vivid: Linux hardware enablement kernel from Vivid

Details:

It was discovered that the SCTP protocol implementation in the Linux kernel
performed an incorrect sequence of protocol-initialization steps. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2015-5283)

Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted
to garbage collect incompletely instantiated keys. A local unprivileged
attacker could use this to cause a denial of service (system crash).
(CVE-2015-7872)

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-3.19.0-39-generic   3.19.0-39.44~14.04.1
  linux-image-3.19.0-39-generic-lpae  3.19.0-39.44~14.04.1
  linux-image-3.19.0-39-lowlatency  3.19.0-39.44~14.04.1
  linux-image-3.19.0-39-powerpc-e500mc  3.19.0-39.44~14.04.1
  linux-image-3.19.0-39-powerpc-smp  3.19.0-39.44~14.04.1
  linux-image-3.19.0-39-powerpc64-emb  3.19.0-39.44~14.04.1
  linux-image-3.19.0-39-powerpc64-smp  3.19.0-39.44~14.04.1

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-2829-2
  https://ubuntu.com/security/notices/USN-2829-1
  CVE-2015-5283, CVE-2015-7872

Package Information:
  https://launchpad.net/ubuntu/+source/linux-lts-vivid/3.19.0-39.44~14.04.1

Ubuntu 2829-2: Linux kernel (Vivid HWE) vulnerabilities

December 4, 2015
Several security issues were fixed in the kernel.

Summary

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-3.19.0-39-generic 3.19.0-39.44~14.04.1 linux-image-3.19.0-39-generic-lpae 3.19.0-39.44~14.04.1 linux-image-3.19.0-39-lowlatency 3.19.0-39.44~14.04.1 linux-image-3.19.0-39-powerpc-e500mc 3.19.0-39.44~14.04.1 linux-image-3.19.0-39-powerpc-smp 3.19.0-39.44~14.04.1 linux-image-3.19.0-39-powerpc64-emb 3.19.0-39.44~14.04.1 linux-image-3.19.0-39-powerpc64-smp 3.19.0-39.44~14.04.1 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-2829-2

https://ubuntu.com/security/notices/USN-2829-1

CVE-2015-5283, CVE-2015-7872

Severity
December 04, 2015

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-vivid/3.19.0-39.44~14.04.1

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