CVE-2009-0748 Information

Description

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 does not validate the superblock configuration which allows local users to cause a denial of service (NULL pointer dereference and OOPS) by attempting to mount a crafted ext4 filesystem.

Reference

http://bugzilla.kernel.org/show_bug.cgi?id=12371 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4ec110281379826c5cf6ed14735e47027c3c5765 http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.19 http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.7 http://osvdb.org/52203 http://rhn.redhat.com/errata/RHSA-2009-1243.html http://secunia.com/advisories/34394 http://secunia.com/advisories/36562 http://secunia.com/advisories/37471 http://www.debian.org/security/2009/dsa-1749 http://www.securityfocus.com/archive/1/507985/100/0/threaded http://www.ubuntu.com/usn/usn-751-1 http://www.vmware.com/security/advisories/VMSA-2009-0016.html http://www.vupen.com/english/advisories/2009/0509 http://www.vupen.com/english/advisories/2009/3316 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A10683 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A8526