Alerts This Week
Warning Icon 1 485
Alerts This Week
Warning Icon 1 485

Ubuntu 14.04 LTS USN-3932-2 Moderate: Risks of Kernel DoS Attacks

ubuntu
Calendar Grey April 2, 2019
Dist Ubuntu Esm H88
Multiple security flaws resolved in the Linux kernel, affecting numerous Ubuntu releases, including denial-of-service vulnerabilities.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

USN-3932-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04

LTS. This update provides the corresponding updates for the Linux

Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu

14.04 LTS.

It was discovered that a race condition existed in the f2fs file system

implementation in the Linux kernel. A local attacker could use this to

cause a denial of service. (CVE-2017-18249)

Wen Xu discovered that the f2fs file system implementation in the Linux

kernel did not properly validate metadata. An attacker could use this to

construct a malicious f2fs image that, when mounted, could cause a denial

of service (system crash). (CVE-2018-13097, CVE-2018-13099, CVE-2018-13100,

CVE-2018-14614, CVE-2018-14616)

Wen Xu and Po-Ning Tseng discovered ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel ubuntu linux-aws linux-image

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-4.4.0-1040-aws      4.4.0-1040.43
  linux-image-4.4.0-144-generic   4.4.0-144.170~14.04.1
  linux-image-4.4.0-144-generic-lpae  4.4.0-144.170~14.04.1
  linux-image-4.4.0-144-lowlatency  4.4.0-144.170~14.04.1
  linux-image-4.4.0-144-powerpc-e500mc  4.4.0-144.170~14.04.1
  linux-image-4.4.0-144-powerpc-smp  4.4.0-144.170~14.04.1
  linux-image-4.4.0-144-powerpc64-emb  4.4.0-144.170~14.04.1
  linux-image-4.4.0-144-powerpc64-smp  4.4.0-144.170~14.04.1
  linux-image-aws                 4.4.0.1040.41
  linux-image-generic-lpae-lts-xenial  4.4.0.144.127
  linux-image-generic-lts-xenial  4.4.0.144.127
  linux-image-lowlatency-lts-xenial  4.4.0.144.127
  linux-image-powerpc-e500mc-lts-xenial  4.4.0.144.127
  linux-image-powerpc-smp-lts-xenial  4.4.0.144.127
  linux-image-powerpc64-emb-lts-xenial  4.4.0.144.127
  linux-image-powerpc64-smp-lts-xenial  4.4.0.144.127
  linux-image-virtual-lts-xenial  4.4.0.144.127

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-3932-2

https://ubuntu.com/security/notices/USN-3932-1

CVE-2017-18249, CVE-2018-13097, CVE-2018-13099, CVE-2018-13100,

CVE-2018-14610, CVE-2018-14611, CVE-2018-14612, CVE-2018-14613,

CVE-2018-14614, CVE-2018-14616, CVE-2018-16884, CVE-2018-9517,

CVE-2019-3459, CVE-2019-3460, CVE-2019-3701, CVE-2019-3819,

CVE-2019-6974, CVE-2019-7221, CVE-2019-7222, CVE-2019-9213

April 02, 2019

Topics%20covered

Topics Covered

security advisory denial of service information leak kernel ubuntu linux-aws linux-image

Package Information

https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1040.43
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-144.170~14.04.1

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here