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TI-2016-03843 Aliases CVE-2016-4470GHSA-9x7c-6h5w-qmpg

The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3…

Priority LOW 26Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command.

Why it matters now

EPSS 0.00582 48th percentileScored 2026-11-07
Fix Fixed Red Hat: 9 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 17

CPEVersionsRoleVendor
cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*3.3VulnerableOracle
cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*3.4VulnerableOracle
cpe:2.3:o:oracle:linux:5.0:*:*:*:*:*:*:*5.0VulnerableOracle
cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*6VulnerableOracle
cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*7VulnerableOracle
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 4.6.3VulnerableLinux
cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:12.0:sp1:*:*:*:*:*:*12.0 sp1VulnerableNovell
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_real_time:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·Oracle
  • cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·Oracle
  • cpe:2.3:o:oracle:linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Oracle
  • cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:* Versions 6 Vulnerable ·Oracle
  • cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:* Versions 7 Vulnerable ·Oracle
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 4.6.3 Vulnerable ·Linux
  • cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:12.0:sp1:*:*:*:*:*:* Versions 12.0 sp1 Vulnerable ·Novell
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_real_time:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
Show 7 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*7.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:*7.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*2.0VulnerableRed Hat
  • cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Red Hat

Remediation

Red Hat 9 advisories

  • RHSA-2016:2133 Released 2016-11-01 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server AUS (v. 6.4) kernel-2.6.32-358.75.1.el6, kernel-debug-2.6.32-358.75.1.el6, kernel-debug-devel-2.6.32-358.75.1.el6 +5
    • Red Hat Enterprise Linux Server Optional AUS (v. 6.4) kernel-2.6.32-358.75.1.el6, python-perf-2.6.32-358.75.1.el6
  • RHSA-2016:2128 Released 2016-10-31 · Red Hat rating Important
    kernel security and enhancement update
    • Red Hat Enterprise Linux HPC Node EUS (v. 6.6) kernel-2.6.32-504.54.1.el6, kernel-abi-whitelists-2.6.32-504.54.1.el6, kernel-debug-2.6.32-504.54.1.el6 +6
    • Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6) python-perf-2.6.32-504.54.1.el6
    • Red Hat Enterprise Linux Server EUS (v. 6.6) kernel-2.6.32-504.54.1.el6, kernel-abi-whitelists-2.6.32-504.54.1.el6, kernel-bootwrapper-2.6.32-504.54.1.el6 +9
    • Red Hat Enterprise Linux Server Optional EUS (v. 6.6) python-perf-2.6.32-504.54.1.el6
  • RHSA-2016:2076 Released 2016-10-18 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux HPC Node EUS (v. 6.7) kernel-2.6.32-573.35.1.el6, kernel-abi-whitelists-2.6.32-573.35.1.el6, kernel-debug-2.6.32-573.35.1.el6 +6
    • Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) python-perf-2.6.32-573.35.1.el6
    • Red Hat Enterprise Linux Server EUS (v. 6.7) kernel-2.6.32-573.35.1.el6, kernel-abi-whitelists-2.6.32-573.35.1.el6, kernel-bootwrapper-2.6.32-573.35.1.el6 +9
    • Red Hat Enterprise Linux Server Optional EUS (v. 6.7) python-perf-2.6.32-573.35.1.el6
Show 6 more Red Hat advisories
  • RHSA-2016:2074 Released 2016-10-18 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 6.5) kernel-2.6.32-431.74.1.el6, kernel-abi-whitelists-2.6.32-431.74.1.el6, kernel-debug-2.6.32-431.74.1.el6 +6
    • Red Hat Enterprise Linux Server Optional AUS (v. 6.5) kernel-2.6.32-431.74.1.el6, python-perf-2.6.32-431.74.1.el6
  • RHSA-2016:2006 Released 2016-10-04 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-642.6.1.el6, kernel-abi-whitelists-2.6.32-642.6.1.el6, kernel-debug-2.6.32-642.6.1.el6 +6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-642.6.1.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-642.6.1.el6, kernel-abi-whitelists-2.6.32-642.6.1.el6, kernel-debug-2.6.32-642.6.1.el6 +6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-642.6.1.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-642.6.1.el6, kernel-abi-whitelists-2.6.32-642.6.1.el6, kernel-bootwrapper-2.6.32-642.6.1.el6 +9
    • Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-642.6.1.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-642.6.1.el6, kernel-abi-whitelists-2.6.32-642.6.1.el6, kernel-debug-2.6.32-642.6.1.el6 +6
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-642.6.1.el6
  • RHSA-2016:1657 Released 2016-08-23 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.1) kernel-3.10.0-229.40.1.el7, kernel-abi-whitelists-3.10.0-229.40.1.el7, kernel-debug-3.10.0-229.40.1.el7 +7
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1) kernel-tools-libs-devel-3.10.0-229.40.1.el7, python-perf-3.10.0-229.40.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.1) kernel-3.10.0-229.40.1.ael7b, kernel-3.10.0-229.40.1.el7, kernel-abi-whitelists-3.10.0-229.40.1.ael7b +20
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.1) kernel-debug-devel-3.10.0-229.40.1.ael7b, kernel-tools-libs-devel-3.10.0-229.40.1.ael7b, kernel-tools-libs-devel-3.10.0-229.40.1.el7 +2
  • RHSA-2016:1541 Released 2016-08-02 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-327.28.2.rt56.234.el7_2, kernel-rt-debug-3.10.0-327.28.2.rt56.234.el7_2, kernel-rt-debug-devel-3.10.0-327.28.2.rt56.234.el7_2 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-327.28.2.rt56.234.el7_2, kernel-rt-debug-3.10.0-327.28.2.rt56.234.el7_2, kernel-rt-debug-devel-3.10.0-327.28.2.rt56.234.el7_2 +7
  • RHSA-2016:1539 Released 2016-08-02 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-327.28.2.el7, kernel-abi-whitelists-3.10.0-327.28.2.el7, kernel-debug-3.10.0-327.28.2.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.28.2.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-327.28.2.el7, kernel-abi-whitelists-3.10.0-327.28.2.el7, kernel-debug-3.10.0-327.28.2.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.28.2.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-327.28.2.el7, kernel-abi-whitelists-3.10.0-327.28.2.el7, kernel-bootwrapper-3.10.0-327.28.2.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-327.28.2.el7, kernel-tools-libs-devel-3.10.0-327.28.2.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-327.28.2.el7, kernel-abi-whitelists-3.10.0-327.28.2.el7, kernel-debug-3.10.0-327.28.2.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.28.2.el7
  • RHSA-2016:1532 Released 2016-08-02 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-327.rt56.194.el6rt, kernel-rt-debug-1:3.10.0-327.rt56.194.el6rt, kernel-rt-debug-devel-1:3.10.0-327.rt56.194.el6rt +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux ComputeNode EUS (v. 7.1)Fixed RHSA-2016:1657
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1)Fixed RHSA-2016:1657
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2016:2006
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2016:2006
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2016:2006
Red Hat Enterprise Linux HPC Node EUS (v. 6.6)Fixed RHSA-2016:2128
Red Hat Enterprise Linux HPC Node EUS (v. 6.7)Fixed RHSA-2016:2076
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2016:2006
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6)Fixed RHSA-2016:2128
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7)Fixed RHSA-2016:2076
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2016:1541
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:2006
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux Server AUS (v. 6.4)Fixed RHSA-2016:2133
Red Hat Enterprise Linux Server AUS (v. 6.5)Fixed RHSA-2016:2074
Red Hat Enterprise Linux Server EUS (v. 6.6)Fixed RHSA-2016:2128
Red Hat Enterprise Linux Server EUS (v. 6.7)Fixed RHSA-2016:2076
Red Hat Enterprise Linux Server EUS (v. 7.1)Fixed RHSA-2016:1657
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2016:2006
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux Server Optional AUS (v. 6.4)Fixed RHSA-2016:2133
Red Hat Enterprise Linux Server Optional AUS (v. 6.5)Fixed RHSA-2016:2074
Red Hat Enterprise Linux Server Optional EUS (v. 6.6)Fixed RHSA-2016:2128
Red Hat Enterprise Linux Server Optional EUS (v. 6.7)Fixed RHSA-2016:2076
Red Hat Enterprise Linux Server Optional EUS (v. 7.1)Fixed RHSA-2016:1657
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:2006
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2016:2006
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2016:1541
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2016:1532
Not affected: 1 product
  • Red Hat Enterprise Linux 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-4470
  2. 2026-10-03 Alias added: GHSA-9x7c-6h5w-qmpg

References

Advisory 45

Other 2

Sources

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