CVE-2017-5967 — kernel: Time subsystem allows local users to discover real PID values

Back Back to CVE browser

MEDIUM

kernel: Time subsystem allows local users to discover real PID values

Published Feb 14, 2017

4.0

MEDIUM

CVSS 3.0

EPSS 0.33%

Description

The time subsystem in the Linux kernel through 4.9.9, when CONFIG_TIMER_STATS is enabled, allows local users to discover real PID values (as distinguished from PID values inside a PID namespace) by reading the /proc/timer_list file, related to the print_timer function in kernel/time/timer_list.c and the __timer_stats_timer_set_start_info function in kernel/time/timer.c.

Affected products

Red Hat Enterprise Linux 5

kernel

Not affected
Red Hat Enterprise Linux 6

kernel

Not affected
Red Hat Enterprise Linux 7

kernel

Affected
Red Hat Enterprise Linux 7

kernel-rt

Affected
Red Hat Enterprise MRG 2

realtime-kernel

Affected

Product	Package	State	Advisory
Red Hat Enterprise Linux 5	kernel	Not affected	n/a
Red Hat Enterprise Linux 6	kernel	Not affected	n/a
Red Hat Enterprise Linux 7	kernel	Affected	n/a
Red Hat Enterprise Linux 7	kernel-rt	Affected	n/a
Red Hat Enterprise MRG 2	realtime-kernel	Affected	n/a

Remediation

Red Hat statement

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. This has been rated as having Low 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/.

Metrics

0.33% 0.00334

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

EPSS probability 0.00334

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 (9 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	0.33% (0.00334)	24.43th	v5 (v2026.06.15)
Sep 20, 2026	0.33% (0.00334)	26.91th	v5 (v2026.06.15)
Jul 20, 2024	0.07% (0.00070)	31.09th	v3 (v2023.03.01)
Jun 13, 2024	0.07% (0.00070)	30.62th	v3 (v2023.03.01)
Mar 7, 2023	0.07% (0.00070)	28.59th	v3 (v2023.03.01)
Mar 6, 2023	0.95% (0.00954)	36.37th	v2 (v2022.01.01)
Feb 4, 2022	0.95% (0.00954)	16.28th	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 (2)

CWE-200

Exposure of Sensitive Information

CWE-212

References (7)

http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=dfb4357da6ddbdf57d583ba64361c9d792b0e0b1
x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
http://www.securityfocus.com/bid/96271
vdb-entryx_refsource_BID
https://access.redhat.com/security/cve/CVE-2017-5967
Vendor Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=193921
x_refsource_MISCIssue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1422138
Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2017-5967
https://www.cve.org/CVERecord?id=CVE-2017-5967

Link	Providers	Tags
http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=dfb4357da6ddbdf57d583ba64361c9d792b0e0b1		x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
http://www.securityfocus.com/bid/96271		vdb-entryx_refsource_BID
https://access.redhat.com/security/cve/CVE-2017-5967		Vendor Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=193921		x_refsource_MISCIssue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1422138		Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2017-5967
https://www.cve.org/CVERecord?id=CVE-2017-5967