Information exposure in Linux kernel - CVE-2012-6538
Published: March 15, 2013 / Updated: April 22, 2019
Vulnerability identifier: #VU92529
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-6538
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to information exposure error within the copy_to_user_auth() function in net/xfrm/xfrm_user.c. A local user can gain access to sensitive information.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)
How to mitigate CVE-2012-6538
Install update from vendor's repository.
linux (Ubuntu package) - addressed in versions 3.0.0-28.45, 3.2.0-34.53, 3.5.0-19.30
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-28.45~lucid1
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-28.45~lucid1
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4c87308bdea31a7b4828a51f6156e6f721a1fcc9
- http://rhn.redhat.com/errata/RHSA-2013-0744.html
- http://www.openwall.com/lists/oss-security/2013/03/05/13
- https://github.com/torvalds/linux/commit/4c87308bdea31a7b4828a51f6156e6f721a1fcc9
- https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2