The ldm_parse_vmdb function in fs/partitions/ldm.c in the Linux kernel before 2.6.38-rc6-git6 does not validate the VBLK size value in the VMDB structure in an LDM partition table, which allows local users to cause a denial of service (divide-by-zero error and OOPS) via a crafted partition table.

References

• https://nvd.nist.gov/vuln/detail/CVE-2011-1012
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=294f6cf48666825d23c9372ef37631232746e40d
• http://openwall.com/lists/oss-security/2011/02/23/21
• http://openwall.com/lists/oss-security/2011/02/23/4
• http://securityreason.com/securityalert/8115
• http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.38-rc6-git6.log
• http://www.pre-cert.de/advisories/PRE-SA-2011-01.txt
• http://www.securityfocus.com/archive/1/516615/100/0/threaded
• http://www.securityfocus.com/bid/46512
• http://www.securitytracker.com/id?1025127
• http://www.spinics.net/lists/mm-commits/msg82429.html
• http://www.ubuntu.com/usn/USN-1146-1
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=294f6cf48666825d23c9372ef37631232746e40d