SB2011030209 - Input validation error in Linux kernel
Published: March 2, 2011 Updated: August 11, 2020
Security Bulletin ID
SB2011030209
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2011-1012)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
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.
Remediation
Install update from vendor's website.
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