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Ubuntu 12.04 LTS USN-3187-2 Critical: Kernel DoS and Memory Leak Issues

ubuntu
Calendar Grey February 9, 2017
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-3188-1 addresses severe vulnerabilities in the kernel, thwarting possible DDoS exploits.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-ti-omap4: Linux kernel for OMAP4

Details:

Andrey Konovalov discovered that the SCTP implementation in the Linux

kernel improperly handled validation of incoming data. A remote attacker

could use this to cause a denial of service (system crash). (CVE-2016-9555)

It was discovered that multiple memory leaks existed in the XFS

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

cause a denial of service (memory consumption). (CVE-2016-9685)

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-1499-omap4    3.2.0-1499.126
  linux-image-omap4               3.2.0.1499.94

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-3187-2

https://ubuntu.com/security/notices/USN-3187-1

CVE-2016-9555, CVE-2016-9685

Severity
critical
Lowest
Low
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Critical

February 09, 2017

Package Information

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