Security restrictions bypass in Linux kernel - CVE-2011-4127
Published: July 3, 2012 / Updated: February 13, 2023
Vulnerability identifier: #VU95724
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2011-4127
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2011-4127
Install update from vendor's repository.
Sources
- 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