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Ubuntu 12.04 ESM USN-3620-2 Critical: Linux Kernel Flaws

ubuntu
Calendar Grey April 5, 2018
Scroller Ubuntu Esm H88
Follow these updated instructions to mitigate Linux kernel vulnerabilities on Ubuntu Trusty HWE and maintain a secure system environment
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise ESM

Details:

USN-3620-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04

LTS. This update provides the corresponding updates for the Linux

Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu

12.04 ESM.

Jann Horn discovered that microprocessors utilizing speculative execution

and branch prediction may allow unauthorized memory reads via sidechannel

attacks. This flaw is known as Spectre. A local attacker could use this to

expose sensitive information, including kernel memory. (CVE-2017-5715)

It was discovered that the netlink 802.11 configuration interface in the

Linux kernel did not properly validate some attributes passed from

userspace. A local attacker with the CAP_NET_ADMIN privilege could use this

to cause a denial of service (system crash) or possibly execute arbitrary

code. (CVE-2017-11089)

It...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu memory leak Linux kernel critical security flaw

Update Instructions

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

Ubuntu 12.04 ESM:
  linux-image-3.13.0-144-generic  3.13.0-144.193~precise1
  linux-image-3.13.0-144-generic-lpae  3.13.0-144.193~precise1
  linux-image-generic-lpae-lts-trusty  3.13.0.144.135
  linux-image-generic-lts-trusty  3.13.0.144.135

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

https://ubuntu.com/security/notices/USN-3620-2

https://ubuntu.com/security/notices/USN-3620-1

CVE-2017-11089, CVE-2017-12762, CVE-2017-17448, CVE-2017-17741,

CVE-2017-17805, CVE-2017-17807, CVE-2017-5715, CVE-2018-1000026,

CVE-2018-5332

Severity
critical
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Critical

April 05, 2018

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu memory leak Linux kernel critical security flaw

Package Information

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