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Ubuntu 14.10: USN-2565-1 Moderate Kernel Exploits and Fixes

ubuntu
Calendar Grey April 9, 2015
Dist Ubuntu Esm H88
Several critical vulnerabilities within the Linux kernel have been resolved in Ubuntu 14.10 as detailed in USN-2565-1, providing essential patches and upgrade guidelines.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

An integer overflow was discovered in the stack randomization feature of

the Linux kernel on 64 bit platforms. A local attacker could exploit this

flaw to bypass the Address Space Layout Randomization (ASLR) protection

mechanism. (CVE-2015-1593)

An information leak was discovered in the Linux Kernel's handling of

userspace configuration of the link layer control (LLC). A local user could

exploit this flaw to read data from other sysctl settings. (CVE-2015-2041)

An information leak was discovered in how the Linux kernel handles setting

the Reliable Datagram Sockets (RDS) settings. A local user could exploit

this flaw to read data from other sysctl settings. (CVE-2015-2042)

Topics%20covered

Topics Covered

security advisory moderate information leak update kernel local attack ubuntu

Update Instructions

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

Ubuntu 14.10:
  linux-image-3.16.0-34-generic   3.16.0-34.45
  linux-image-3.16.0-34-generic-lpae  3.16.0-34.45
  linux-image-3.16.0-34-lowlatency  3.16.0-34.45
  linux-image-3.16.0-34-powerpc-e500mc  3.16.0-34.45
  linux-image-3.16.0-34-powerpc-smp  3.16.0-34.45
  linux-image-3.16.0-34-powerpc64-emb  3.16.0-34.45
  linux-image-3.16.0-34-powerpc64-smp  3.16.0-34.45

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-2565-1

CVE-2015-1593, CVE-2015-2041, CVE-2015-2042

April 09, 2015

Topics%20covered

Topics Covered

security advisory moderate information leak update kernel local attack ubuntu

Package Information

https://launchpad.net/ubuntu/+source/linux/3.16.0-34.45

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