Amazon Linux AMI : kernel (ALAS-2012-45)
Medium Nessus Plugin ID 69652
SynopsisThe remote Amazon Linux AMI host is missing a security update.
DescriptionThe 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.
SolutionRun 'yum update kernel' to update your system. You will need to reboot your system in order for the new kernel to be running.