USN-1432-1: Linux kernel vulnerabilities

Published May 8, 2012
·
Updated

A flaw was found in the Linux's kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service. (CVE-2011-4086) A flaw was discovered in the Linux kernel's cifs file system. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. (CVE-2012-1090) A flaw was found in the Linux kernel's ext4 file system when mounting a corrupt filesystem. A user-assisted remote attacker could exploit this flaw to cause a denial of service. (CVE-2012-2100) Tetsuo Handa reported a flaw in the OOM (out of memory) killer of the Linux kernel. A local unprivileged user can exploit this flaw to cause system unstability and denial of services. (CVE-2012-4398)

Affected Software

18 affected componentsFixes available
All of the following
ubuntu/linux-image-2.6.38-15-powerpc<2.6.38-15.59
2.6.38-15.59
Ubuntu Ubuntu=11.04
All of the following
ubuntu/linux-image-2.6.38-15-omap<2.6.38-15.59
2.6.38-15.59
Ubuntu Ubuntu=11.04
All of the following
ubuntu/linux-image-2.6.38-15-generic-pae<2.6.38-15.59
2.6.38-15.59
Ubuntu Ubuntu=11.04
All of the following
ubuntu/linux-image-2.6.38-15-server<2.6.38-15.59
2.6.38-15.59
Ubuntu Ubuntu=11.04
All of the following
ubuntu/linux-image-2.6.38-15-powerpc64-smp<2.6.38-15.59
2.6.38-15.59
Ubuntu Ubuntu=11.04
All of the following
ubuntu/linux-image-2.6.38-15-virtual<2.6.38-15.59
2.6.38-15.59
Ubuntu Ubuntu=11.04
All of the following
ubuntu/linux-image-2.6.38-15-versatile<2.6.38-15.59
2.6.38-15.59
Ubuntu Ubuntu=11.04
All of the following
ubuntu/linux-image-2.6.38-15-generic<2.6.38-15.59
2.6.38-15.59
Ubuntu Ubuntu=11.04
All of the following
ubuntu/linux-image-2.6.38-15-powerpc-smp<2.6.38-15.59
2.6.38-15.59
Ubuntu Ubuntu=11.04

Event History

May 8, 2012
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of USN-1432-1?

The severity of USN-1432-1 is classified as a denial of service vulnerability affecting Linux's ext4 file system.

2

How do I fix USN-1432-1?

To fix USN-1432-1, update your Ubuntu system to the linux-image packages version 2.6.38-15.59 or later.

3

Which systems are affected by USN-1432-1?

USN-1432-1 affects Ubuntu version 11.04 with specific linux-image packages prior to version 2.6.38-15.59.

4

What type of vulnerability is USN-1432-1?

USN-1432-1 is a local denial of service vulnerability that can be exploited by unprivileged users.

5

Is USN-1432-1 related to any other vulnerabilities?

Yes, USN-1432-1 addresses issues tracked under CVE-2011-4086 and several other CVEs.

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