Vulnerability CVE-2015-2672
Published: 2016-05-02

Description:
The xsave/xrstor implementation in arch/x86/include/asm/xsave.h in the Linux kernel before 3.19.2 creates certain .altinstr_replacement pointers and consequently does not provide any protection against instruction faulting, which allows local users to cause a denial of service (panic) by triggering a fault, as demonstrated by an unaligned memory operand or a non-canonical address memory operand.

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:
https://github.com/torvalds/linux/commit/06c8173eb92bbfc03a0fe8bb64315857d0badd06
https://bugzilla.redhat.com/show_bug.cgi?id=1204729
http://www.openwall.com/lists/oss-security/2015/03/22/1
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.2
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06c8173eb92bbfc03a0fe8bb64315857d0badd06
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