Vulnerability CVE-2012-6657
Published: 2014-09-28

Description:
The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5.7 does not ensure that a keepalive action is associated with a stream socket, which allows local users to cause a denial of service (system crash) by leveraging the ability to create a raw socket.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Linux Kernel net guard tcp_set_keepalive against crash
Dave Jones
15.09.2014

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.9/10
6.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Novell -> Suse linux enterprise server 
Linux -> Linux kernel 

 References:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3e10986d1d698140747fcfc2761ec9cb64c1d582
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
http://marc.info/?l=bugtraq&m=142722450701342&w=2
http://marc.info/?l=bugtraq&m=142722544401658&w=2
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.5.7
http://www.openwall.com/lists/oss-security/2014/09/15/8
https://bugzilla.redhat.com/show_bug.cgi?id=1141742
https://github.com/torvalds/linux/commit/3e10986d1d698140747fcfc2761ec9cb64c1d582
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