Published: 25/08/2017 Updated: 11/09/2018

CVSS v2 Base Score: 2.1 | Impact Score: 2.9 | Exploitability Score: 3.9

CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8

VMScore: 187

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

The acpi_ns_evaluate() function in drivers/acpi/acpica/nseval.c in the Linux kernel up to and including 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 up to and including 4.9) via a crafted ACPI table.

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linux linux kernel

Several security issues were fixed in the Linux kernel ...

A flaw was found in the Linux kernel's ACPI subsystem where a function does not flush the operand cache and causes a kernel stack dump This allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism when using a specially crafted ACPI table ...

CWE-200 https://patchwork.kernel.org/patch/9850567/https://github.com/acpica/acpica/pull/296/commits/37f2c716f2c6ab14c3ba557a539c3ee3224931b5 http://www.securityfocus.com/bid/100497 https://usn.ubuntu.com/3696-2/https://usn.ubuntu.com/3696-1/https://usn.ubuntu.com/3762-2/https://usn.ubuntu.com/3762-1/https://nvd.nist.gov https://usn.ubuntu.com/3696-1/

CVE-2017-13695

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