USN-4041-2: Linux kernel (HWE) update

USN-4041-2: Linux kernel (HWE) update

linux-lts-xenial, linux-aws, linux-azure update

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 ESM

Summary

Several security issues were fixed in the Linux kernel.

Software Description

  • linux-aws – Linux kernel for Amazon Web Services (AWS) systems
  • linux-azure – Linux kernel for Microsoft Azure Cloud systems
  • linux-lts-xenial – Linux hardware enablement kernel from Xenial for Trusty

Details

USN-4041-1 provided updates for the Linux kernel in Ubuntu.
This update provides the corresponding updates for the Linux kernel
for Ubuntu 16.04 ESM.

USN-4017-2 fixed vulnerabilities in the Linux kernel. Unfortunately,
the update introduced a regression that interfered with networking
applications that setup very low SO_SNDBUF values. This update fixes
the problem.

We apologize for the inconvenience.

Jonathan Looney discovered that the Linux kernel could be coerced into
segmenting responses into multiple TCP segments. A remote attacker could
construct an ongoing sequence of requests to cause a denial of service.
(CVE-2019-11479)

Update instructions

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

Ubuntu 14.04 ESM
linux-image-4.15.0-1049-azure – 4.15.0-1049.54~14.04.1
linux-image-4.4.0-1048-aws – 4.4.0-1048.52
linux-image-4.4.0-154-generic – 4.4.0-154.181~14.04.1
linux-image-4.4.0-154-generic-lpae – 4.4.0-154.181~14.04.1
linux-image-4.4.0-154-lowlatency – 4.4.0-154.181~14.04.1
linux-image-4.4.0-154-powerpc-e500mc – 4.4.0-154.181~14.04.1
linux-image-4.4.0-154-powerpc-smp – 4.4.0-154.181~14.04.1
linux-image-4.4.0-154-powerpc64-emb – 4.4.0-154.181~14.04.1
linux-image-4.4.0-154-powerpc64-smp – 4.4.0-154.181~14.04.1
linux-image-aws – 4.4.0.1048.49
linux-image-azure – 4.15.0.1049.36
linux-image-generic-lpae-lts-xenial – 4.4.0.154.135
linux-image-generic-lts-xenial – 4.4.0.154.135
linux-image-lowlatency-lts-xenial – 4.4.0.154.135
linux-image-powerpc-e500mc-lts-xenial – 4.4.0.154.135
linux-image-powerpc-smp-lts-xenial – 4.4.0.154.135
linux-image-powerpc64-emb-lts-xenial – 4.4.0.154.135
linux-image-powerpc64-smp-lts-xenial – 4.4.0.154.135
linux-image-virtual-lts-xenial – 4.4.0.154.135

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

Source: USN-4041-2: Linux kernel (HWE) update

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이 사이트는 스팸을 줄이는 아키스밋을 사용합니다. 댓글이 어떻게 처리되는지 알아보십시오.