Vulnerability CVE-2014-9090
Published: 2014-11-29   Modified: 2014-11-30

Description:
The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to cause a denial of service (panic) via a modify_ldt system call, as demonstrated by sigreturn_32 in the linux-clock-tests test suite.

See advisories in our WLB2 database:
Topic
Author
Date
High
Linux Kernel 3.2 multiple x86_64 vulnerabilities
Andy Lutomirski
16.12.2014

Type:

CWE-17

 (Code)

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
Linux -> Linux kernel 

 References:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441
https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441
http://www.openwall.com/lists/oss-security/2014/11/26/5
http://www.debian.org/security/2014/dsa-3093
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
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