CVE-2017-13694 — kernel: ACPI node and node_ext cache leak

Back Back to CVE browser

MEDIUM

kernel: ACPI node and node_ext cache leak

Published Aug 25, 2017

5.5

MEDIUM

CVSS 3.0

EPSS 0.41%

Description

The acpi_ps_complete_final_op() function in drivers/acpi/acpica/psobject.c in the Linux kernel through 4.12.9 does not flush the node and node_ext caches 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.

Affected products

Red Hat Enterprise Linux 5

kernel

Will not fix
Red Hat Enterprise Linux 6

kernel

Will not fix
Red Hat Enterprise Linux 7

acpica-tools

Will not fix
Red Hat Enterprise Linux 7

kernel

Will not fix
Red Hat Enterprise Linux 7

kernel-alt

Affected
Red Hat Enterprise Linux 7

kernel-rt

Will not fix
Red Hat Enterprise MRG 2

realtime-kernel

Will not fix

Product	Package	State	Advisory
Red Hat Enterprise Linux 5	kernel	Will not fix	n/a
Red Hat Enterprise Linux 6	kernel	Will not fix	n/a
Red Hat Enterprise Linux 7	acpica-tools	Will not fix	n/a
Red Hat Enterprise Linux 7	kernel	Will not fix	n/a
Red Hat Enterprise Linux 7	kernel-alt	Affected	n/a
Red Hat Enterprise Linux 7	kernel-rt	Will not fix	n/a
Red Hat Enterprise MRG 2	realtime-kernel	Will not fix	n/a

Remediation

Red Hat statement

Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/ The Red Hat Security Response Team has rated this issue as having moderate security impact. The risks associated with fixing this bug are greater than the moderate severity security risk. We therefore currently have no plans to fix this flaw in Red Hat Enterprise Linux 5,6,7 and Red Hat Enterprise MRG.

Metrics

0.41% 0.00408

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00408

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (8 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.41% (0.00408)	32.64th	v5 (v2026.06.15)
Sep 20, 2026	0.41% (0.00408)	34.80th	v5 (v2026.06.15)
Jul 20, 2024	0.04% (0.00042)	5.06th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00042)	5.63th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00890)	30.33th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00890)	12.04th	v2 (v2022.01.01)
Feb 3, 2022	0.44% (0.00444)	10.84th	v5 (v2026.06.15)
Apr 14, 2021	0.44% (0.00444)	0.00th	v1

Weaknesses (1)

CWE-200

Exposure of Sensitive Information

References (8)

http://www.securityfocus.com/bid/100500
vdb-entryThird Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/CVE-2017-13694
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1485348
Issue Tracking
https://github.com/acpica/acpica/pull/278
https://github.com/acpica/acpica/pull/278/commits/4a0243ecb4c94e2d73510d096c5ea4d0711fc6c0
Issue TrackingPatchThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2017-13694
https://patchwork.kernel.org/patch/9806085/
PatchThird Party Advisory
https://www.cve.org/CVERecord?id=CVE-2017-13694

Link	Providers	Tags
http://www.securityfocus.com/bid/100500		vdb-entryThird Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/CVE-2017-13694		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1485348		Issue Tracking
https://github.com/acpica/acpica/pull/278
https://github.com/acpica/acpica/pull/278/commits/4a0243ecb4c94e2d73510d096c5ea4d0711fc6c0		Issue TrackingPatchThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2017-13694
https://patchwork.kernel.org/patch/9806085/		PatchThird Party Advisory
https://www.cve.org/CVERecord?id=CVE-2017-13694