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Ubuntu 14.04 LTS: USN-3360-1 Moderate Linux Kernel Issues Denial of Service

ubuntu
Calendar Grey July 21, 2017
Dist Ubuntu Esm H88
Ubuntu 20.04 LTS addresses numerous vulnerabilities within the Linux kernel, improving both system integrity and security measures across a wide range of functionalities.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

Details:

It was discovered that the Linux kernel did not properly initialize a Wake-on-Lan data structure. A local attacker could use this to expose sensitive

information (kernel memory). (CVE-2014-9900)

It was discovered that the Linux kernel did not properly restrict access to

/proc/iomem. A local attacker could use this to expose sensitive

information. (CVE-2015-8944)

It was discovered that a use-after-free vulnerability existed in the

performance events and counters subsystem of the Linux kernel for ARM64. A

local attacker could use this to cause a denial of service (system crash)

or possibly execute arbitrary code. (CVE-2015-8955)

It was discovered that the SCSI generic (sg) driver in the Linux kernel

contained a double-free vulnerability. A local attacker could use this to

cause a denial of service (system crash). (CVE-2015-8962)

Sasha Levin disco...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel system update local attack information exposure

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-125-generic  3.13.0-125.174
  linux-image-3.13.0-125-generic-lpae  3.13.0-125.174
  linux-image-3.13.0-125-lowlatency  3.13.0-125.174
  linux-image-3.13.0-125-powerpc-e500  3.13.0-125.174
  linux-image-3.13.0-125-powerpc-e500mc  3.13.0-125.174
  linux-image-3.13.0-125-powerpc-smp  3.13.0-125.174
  linux-image-3.13.0-125-powerpc64-emb  3.13.0-125.174
  linux-image-3.13.0-125-powerpc64-smp  3.13.0-125.174
  linux-image-generic             3.13.0.125.135
  linux-image-generic-lpae        3.13.0.125.135
  linux-image-lowlatency          3.13.0.125.135
  linux-image-powerpc-e500        3.13.0.125.135
  linux-image-powerpc-e500mc      3.13.0.125.135
  linux-image-powerpc-smp         3.13.0.125.135
  linux-image-powerpc64-emb       3.13.0.125.135
  linux-image-powerpc64-smp       3.13.0.125.135

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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

CVE-2014-9900, CVE-2015-8944, CVE-2015-8955, CVE-2015-8962,

CVE-2015-8963, CVE-2015-8964, CVE-2015-8966, CVE-2015-8967,

CVE-2016-10088, CVE-2017-1000380, CVE-2017-7346, CVE-2017-7895,

CVE-2017-8924, CVE-2017-8925, CVE-2017-9605

July 21, 2017

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel system update local attack information exposure

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-125.174

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