Linux Kernel 'journal_get_superblock()' Function Local Denial of Service Vulnerability

Linux Kernel 'journal_get_superblock()' Function Local Denial of Service Vulnerability

References:

Download/kernel/rhel5/028stab098.1 (OpenVZ Project)
Download/kernel/rhel6/042stab053.5 (OpenVZ)
Linux kernel Homepage (kernel.org)
ASA-2012-104 kernel security and bug fix update (RHSA-2012-0350) (Avaya)
ASA-2012-118: kernel security, bug fix, and enhancement update (RHSA-2012-0007) (Avaya)
jbd/jbd2: validate sb->s_first in journal_get_superblock() (Eryu Guan)

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