SB2012070327 - Security restrictions bypass in Linux kernel
Published: July 3, 2012
Security Bulletin ID
SB2012070327
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Security restrictions bypass (CVE-ID: CVE-2011-4127)
The vulnerability allows a local user to read and manipulate data.
The Linux kernel before 3.2.2 does not properly restrict SG_IO ioctl calls, which allows local users to bypass intended restrictions on disk read and write operations by sending a SCSI command to (1) a partition block device or (2) an LVM volume.
Remediation
Install update from vendor's website.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=752375
- https://github.com/torvalds/linux/commit/ec8013beddd717d1740cfefb1a9b900deef85462
- https://github.com/torvalds/linux/commit/0bfc96cb77224736dfa35c3c555d37b3646ef35e
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2
- http://www.openwall.com/lists/oss-security/2011/12/22/5
- http://secunia.com/advisories/48898
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0bfc96cb77224736dfa35c3c555d37b3646ef35e
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ec8013beddd717d1740cfefb1a9b900deef85462