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Ubuntu 14.04: USN-4580-1 Critical: Kernel Use-After-Free

ubuntu
Calendar Grey October 13, 2020
Dist Ubuntu Esm H88
Resolution for Ubuntu's kernel exposure enables upgrade to uphold system stability and protection after a failure threat.
The system could be made to crash or possibly run programs as an administrator.

Summary

The system could be made to crash or possibly run programs as an

administrator.

Software Description:

- linux: Linux kernel

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

Details:

Hador Manor discovered that the DCCP protocol implementation in the Linux

kernel improperly handled socket reuse, leading to a use-after-free

vulnerability. A local attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service update instructions ubuntu system crash linux kernel use-after-free

Update Instructions

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

Ubuntu 14.04 ESM:
  linux-image-3.13.0-182-generic  3.13.0-182.233
  linux-image-3.13.0-182-generic-lpae  3.13.0-182.233
  linux-image-3.13.0-182-lowlatency  3.13.0-182.233
  linux-image-generic             3.13.0.182.191
  linux-image-generic-lpae        3.13.0.182.191
  linux-image-generic-pae         3.13.0.182.191
  linux-image-highbank            3.13.0.182.191
  linux-image-lowlatency          3.13.0.182.191
  linux-image-lowlatency-pae      3.13.0.182.191
  linux-image-omap                3.13.0.182.191
  linux-image-server              3.13.0.182.191
  linux-image-virtual             3.13.0.182.191

Ubuntu 12.04 ESM:
  linux-image-3.13.0-182-generic  3.13.0-182.233~12.04.1
  linux-image-3.13.0-182-generic-lpae  3.13.0-182.233~12.04.1
  linux-image-3.13.0-182-lowlatency  3.13.0-182.233~12.04.1
  linux-image-3.2.0-149-generic   3.2.0-149.196
  linux-image-3.2.0-149-generic-pae  3.2.0-149.196
  linux-image-3.2.0-149-highbank  3.2.0-149.196
  linux-image-3.2.0-149-omap      3.2.0-149.196
  linux-image-3.2.0-149-virtual   3.2.0-149.196
  linux-image-generic             3.2.0.149.163
  linux-image-generic-lpae-lts-trusty  3.13.0.182.168
  linux-image-generic-lts-trusty  3.13.0.182.168
  linux-image-generic-pae         3.2.0.149.163
  linux-image-highbank            3.2.0.149.163
  linux-image-server              3.2.0.149.163
  linux-image-virtual             3.2.0.149.163

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-2020-16119

Severity
critical
Lowest
Low
Medium
High
Critical

October 14, 2020

Topics%20covered

Topics Covered

security advisory denial of service update instructions ubuntu system crash linux kernel use-after-free

Package Information

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