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TI-2016-01955 Aliases CVE-2016-2143GHSA-h8j9-2jj6-73jj

The fork implementation in the Linux kernel before 4.5 on s390 platforms mishandles the…

Priority LOW 35CWE-20Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

The fork implementation in the Linux kernel before 4.5 on s390 platforms mishandles the case of four page-table levels, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted application, related to arch/s390/include/asm/mmu_context.h and arch/s390/include/asm/pgalloc.h.

Why it matters now

EPSS 0.00557 46th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 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 · 6

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.25 to before 3.2.79; 3.3 to before 3.12.58; 3.13 to before 3.16.35; 3.17 to before 4.1.21; 4.2 to before 4.4.6VulnerableLinux
cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*6.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:oracle:linux:7:0:*:*:*:*:*:*7 0VulnerableOracle
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.25 to before 3.2.79; 3.3 to before 3.12.58; 3.13 to before 3.16.35; 3.17 to before 4.1.21; 4.2 to before 4.4.6 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:oracle:linux:7:0:*:*:*:*:*:* Versions 7 0 Vulnerable ·Oracle

Remediation

Red Hat 2 advisories

  • RHSA-2016:2766 Released 2016-11-15 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-642.11.1.el6, kernel-abi-whitelists-2.6.32-642.11.1.el6, kernel-debug-2.6.32-642.11.1.el6 +6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-642.11.1.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-642.11.1.el6, kernel-abi-whitelists-2.6.32-642.11.1.el6, kernel-debug-2.6.32-642.11.1.el6 +6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-642.11.1.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-642.11.1.el6, kernel-abi-whitelists-2.6.32-642.11.1.el6, kernel-bootwrapper-2.6.32-642.11.1.el6 +9
    • Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-642.11.1.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-642.11.1.el6, kernel-abi-whitelists-2.6.32-642.11.1.el6, kernel-debug-2.6.32-642.11.1.el6 +6
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-642.11.1.el6
  • 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

Vendor assessments

Red Hat

Red Hat rating: Moderate. 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 Optional (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2016:2766
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2016:2766
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2016:2766
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2016:2766
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:2766
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2016:2766
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:2766
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1539
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2016:2766
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:1539
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise MRG 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-2143
  2. 2026-10-03 Alias added: GHSA-h8j9-2jj6-73jj

References

Patch 2

Advisory 11

Sources

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