Vulnerability CVE-2013-1767
Published: 2013-02-28

Description:
Use-after-free vulnerability in the shmem_remount_fs function in mm/shmem.c in the Linux kernel before 3.7.10 allows local users to gain privileges or cause a denial of service (system crash) by remounting a tmpfs filesystem without specifying a required mpol (aka mempolicy) mount option.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Linux Kernel CONFIG_NUMA tmpfs use-after-free
Jason A. Donenfe...
26.02.2013

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.2/10
10/10
1.9/10
Exploit range
Attack complexity
Authentication
Local
High
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Linux -> Linux kernel 

 References:
https://github.com/torvalds/linux/commit/5f00110f7273f9ff04ac69a5f85bb535a4fd0987
https://bugzilla.redhat.com/show_bug.cgi?id=915592
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f00110f7273f9ff04ac69a5f85bb535a4fd0987
http://www.ubuntu.com/usn/USN-1798-1
http://www.ubuntu.com/usn/USN-1797-1
http://www.ubuntu.com/usn/USN-1796-1
http://www.ubuntu.com/usn/USN-1795-1
http://www.ubuntu.com/usn/USN-1794-1
http://www.ubuntu.com/usn/USN-1793-1
http://www.ubuntu.com/usn/USN-1792-1
http://www.ubuntu.com/usn/USN-1788-1
http://www.ubuntu.com/usn/USN-1787-1
http://www.openwall.com/lists/oss-security/2013/02/25/23
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.10
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