Amazon Linux AMI : kernel (ALAS-2012-45)

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

The remote Amazon Linux AMI host is missing a security update.

Description :

The journal_unmap_buffer function in fs/jbd2/transaction.c in the
Linux kernel before 3.3.1 does not properly handle the _Delay and
_Unwritten buffer head states, which allows local users to cause a
denial of service (system crash) by leveraging the presence of an ext4
filesystem that was mounted with a journal.

See also :

http://www.nessus.org/u?e1d02cbe

Solution :

Run 'yum update kernel' to update your system. You will need to reboot
your system in order for the new kernel to be running.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)

Family: Amazon Linux Local Security Checks

Nessus Plugin ID: 69652 ()

Bugtraq ID:

CVE ID: CVE-2011-4086