Vulnerability CVE-2011-1012
Published: 2011-03-01   Modified: 2012-02-13

Description:
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.

See advisories in our WLB2 database:
Topic
Author
Date
High
Linux Kernel Buffer Overflow ldm_frag_add() Elevated Privileges
PRE
04.03.2011

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.9/10
6.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Linux -> Kernel 
Linux -> Linux kernel 

 References:
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
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