Vulnerability CVE-2015-3291
Published: 2015-08-31

Description:
arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform does not properly determine when nested NMI processing is occurring, which allows local users to cause a denial of service (skipped NMI) by modifying the rsp register, issuing a syscall instruction, and triggering an NMI.

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Linux -> Linux kernel 

 References:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=810bc075f78ff2c221536eb3008eac6a492dba2d
http://www.debian.org/security/2015/dsa-3313
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.6
http://www.openwall.com/lists/oss-security/2015/07/22/7
http://www.securityfocus.com/bid/76003
http://www.ubuntu.com/usn/USN-2687-1
http://www.ubuntu.com/usn/USN-2688-1
http://www.ubuntu.com/usn/USN-2689-1
http://www.ubuntu.com/usn/USN-2690-1
http://www.ubuntu.com/usn/USN-2691-1
https://bugzilla.redhat.com/show_bug.cgi?id=1243489
https://github.com/torvalds/linux/commit/810bc075f78ff2c221536eb3008eac6a492dba2d
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