Vulnerability CVE-2017-13695
Published: 2017-08-25

Description:
The acpi_ns_evaluate() function in drivers/acpi/acpica/nseval.c in the Linux kernel through 4.12.9 does not flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a crafted ACPI table.

Type:

CWE-200

 (Information Exposure)

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

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
Partial
None
None
Affected software
LINX -> Linux kernel 
Linux -> Linux kernel 

 References:
http://www.securityfocus.com/bid/100497
https://github.com/acpica/acpica/pull/296/commits/37f2c716f2c6ab14c3ba557a539c3ee3224931b5
https://patchwork.kernel.org/patch/9850567/
https://usn.ubuntu.com/3696-1/
https://usn.ubuntu.com/3696-2/
https://usn.ubuntu.com/3762-1/
https://usn.ubuntu.com/3762-2/
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