Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-9604

17
FAUCET Score

CVE-2016-9604 describes a privilege escalation vulnerability in the Linux kernel before version 4.11-rc8, allowing a root user to gain direct access to internal keyrings like '.dns_resolver' or '.builtin_trusted_keys'. This bypasses module signature verification by enabling the root user to add their own public keys. With a CVSS score of 4.4 (Medium), the vulnerability requires high privileges (PR:H) and local access (AV:L) but has a high impact on integrity (I:H) by undermining security controls. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating low current attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
4.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.11:rc1:*:*:*:*:*:*
4.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.11:rc2:*:*:*:*:*:*
4.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.11:rc3:*:*:*:*:*:*
4.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:4.11:rc4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.4MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 65th percentile among its peer group of 3,720 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-693.rt56.617.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-693.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-1:3.10.0-693.2.1.rt56.585.el6rt
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2016-9604Low

kernel: security: The built-in keyrings for security tokens can be joined as a session and then modified by the root user

Apr 18, 2017

References

people.canonical.com / ~ubuntu-security/cve/2016/CVE-2016-9604.html
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1842
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2077
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2669
Third Party Advisory
bugzilla.novell.com / show_bug.cgi
Issue TrackingThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
git.kernel.org / pub/scm/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
securityfocus.com / bid/102135
Third Party AdvisoryVDB Entry