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TI-2016-07825 Aliases CVE-2016-9604GHSA-8qc8-27v8-7664

Incorrect permission assignment in kernel security

Priority LOW 20CWE-732Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 11 fixed, 1 without a fix

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-347.

Summary

It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.

Why it matters now

EPSS 0.00271 19th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 11 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
kernelsecuritykernel 4.11-rc8—No fix listedCNA
  • security Vendorkernel Affected kernel 4.11-rc8 Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 4.11VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.11:rc1:*:*:*:*:*:*4.11 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.11:rc2:*:*:*:*:*:*4.11 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.11:rc3:*:*:*:*:*:*4.11 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.11:rc4:*:*:*:*:*:*4.11 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.11:rc5:*:*:*:*:*:*4.11 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.11:rc6:*:*:*:*:*:*4.11 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.11:rc7:*:*:*:*:*:*4.11 rc7VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 4.11 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.11:rc1:*:*:*:*:*:* Versions 4.11 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.11:rc2:*:*:*:*:*:* Versions 4.11 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.11:rc3:*:*:*:*:*:* Versions 4.11 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.11:rc4:*:*:*:*:*:* Versions 4.11 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.11:rc5:*:*:*:*:*:* Versions 4.11 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.11:rc6:*:*:*:*:*:* Versions 4.11 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.11:rc7:*:*:*:*:*:* Versions 4.11 rc7 Vulnerable ·Linux

Remediation

Red Hat 3 advisories

  • RHSA-2017:2669 Released 2017-09-06 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.2.1.rt56.585.el6rt, kernel-rt-debug-1:3.10.0-693.2.1.rt56.585.el6rt, kernel-rt-debug-devel-1:3.10.0-693.2.1.rt56.585.el6rt +7
  • RHSA-2017:1842 Released 2017-08-01 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-693.el7, kernel-abi-whitelists-3.10.0-693.el7, kernel-debug-3.10.0-693.el7 +7
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-693.el7, kernel-abi-whitelists-3.10.0-693.el7, kernel-debug-3.10.0-693.el7 +7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-693.el7, kernel-abi-whitelists-3.10.0-693.el7, kernel-bootwrapper-3.10.0-693.el7 +10
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-693.el7, kernel-doc-3.10.0-693.el7, kernel-tools-libs-devel-3.10.0-693.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-693.el7, kernel-abi-whitelists-3.10.0-693.el7, kernel-debug-3.10.0-693.el7 +7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.el7
  • RHSA-2017:2077 Released 2017-08-01 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-693.rt56.617.el7, kernel-rt-debug-3.10.0-693.rt56.617.el7, kernel-rt-debug-devel-3.10.0-693.rt56.617.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-693.rt56.617.el7, kernel-rt-debug-3.10.0-693.rt56.617.el7, kernel-rt-debug-devel-3.10.0-693.rt56.617.el7 +7

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:1842
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2017:2077
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2017:2077
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2017:2669
Not affected: 5 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux Client (v. 7)
  • Red Hat Enterprise Linux ComputeNode (v. 7)
  • Red Hat Enterprise Linux Server (v. 7)
  • Red Hat Enterprise Linux Workstation (v. 7)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-9604
  2. 2026-10-03 Alias added: GHSA-8qc8-27v8-7664

References

Patch 1

Advisory 6

  • TI-2014-07400 Blkid in util-linux before 2.26rc-1 allows local users to execute arbitrary code. CVSS 3.1HIGH 7.8
  • TI-2020-14100 An issue was discovered in hwclock.13-v2.27 allows attackers to gain escalated privlidges… CVSS 3.1MEDIUM 6.7
  • TI-2021-02893 A logic error was found in the libmount library of util-linux in the function that allows… CVSS 3.1MEDIUM 5.5
  • TI-2015-04386 The mkostemp function in login-utils in util-linux when used incorrectly allows remote… CVSS 3.1CRITICAL 9.8
  • TI-2026-21863 util-linux: TOCTOU Race Condition in util-linux mount(8) - Loop Device Setup CVSS 3.1MEDIUM 4.7
  • TI-2024-18667 wall in util-linux through 2.40, often installed with setgid tty permissions, allows… CVSS 3.1LOW 3.3
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences