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CVE-2017-5967

13
FAUCET Score

CVE-2017-5967 is a Linux kernel vulnerability (versions through 4.9.9) affecting the time subsystem when CONFIG_TIMER_STATS is enabled. It allows local users to discover real PID values by reading /proc/timer_list, bypassing PID namespace isolation. Rated Medium (CVSS 4.0), it has a low attack complexity and only impacts confidentiality. There is no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.9.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.0MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.5
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 36th percentile among its peer group of 3,052 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt
redhatno patchvia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: realtime-kernel

Vendor Advisories (1)

redhatCVE-2017-5967Low

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

Feb 10, 2017

References

git.kernel.org / cgit/linux/kernel/git/tip/tip.git/commit
Issue TrackingPatchThird Party Advisory
bugzilla.kernel.org / show_bug.cgi
Issue Tracking
securityfocus.com / bid/96271