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TI-2020-09749 Aliases CVE-2020-12114GHSA-f2c7-c2h9-mxmq

A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x before 4.4.221…

Priority LOW 22CWE-362Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 8 fixed, 4 without a fix

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

Summary

A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x before 4.4.221, 4.9.x before 4.9.221, 4.14.x before 4.14.178, 4.19.x before 4.19.119, and 5.x before 5.3 allows local users to cause a denial of service (panic) by corrupting a mountpoint reference counter.

Why it matters now

EPSS 0.0044 38th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 8 fixed, 4 without a fix

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 · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.4.0 to before 4.4.221; 4.9.0 to before 4.9.221; 4.14 to before 4.14.178; 4.19 to before 4.19.119; 5.0 to before 5.3VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.4.0 to before 4.4.221; 4.9.0 to before 4.9.221; 4.14 to before 4.14.178; 4.19 to before 4.19.119; 5.0 to before 5.3 Vulnerable ·Linux

Remediation

Red Hat 4 advisories

  • RHSA-2021:2185 Released 2021-06-02 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v. 8.2) kernel-tools-libs-devel-4.18.0-193.56.1.el8_2
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) bpftool-4.18.0-193.56.1.el8_2, kernel-4.18.0-193.56.1.el8_2, kernel-abi-whitelists-4.18.0-193.56.1.el8_2 +19
  • RHSA-2021:2190 Released 2021-06-01 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v. 8.2) kernel-rt-4.18.0-193.56.1.rt13.106.el8_2, kernel-rt-core-4.18.0-193.56.1.rt13.106.el8_2, kernel-rt-debug-4.18.0-193.56.1.rt13.106.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) kernel-rt-4.18.0-193.56.1.rt13.106.el8_2, kernel-rt-core-4.18.0-193.56.1.rt13.106.el8_2, kernel-rt-debug-4.18.0-193.56.1.rt13.106.el8_2 +9
  • RHSA-2021:1739 Released 2021-05-18 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-305.rt7.72.el8, kernel-rt-core-4.18.0-305.rt7.72.el8, kernel-rt-debug-4.18.0-305.rt7.72.el8 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-305.rt7.72.el8, kernel-rt-core-4.18.0-305.rt7.72.el8, kernel-rt-debug-4.18.0-305.rt7.72.el8 +9
Show 1 more Red Hat advisories
  • RHSA-2021:1578 Released 2021-05-18 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-305.el8
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-305.el8, kernel-4.18.0-305.el8, kernel-abi-stablelists-4.18.0-305.el8 +19

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise MRG 2AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:1578
Red Hat CodeReady Linux Builder EUS (v. 8.2)Fixed RHSA-2021:2185
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:1578
Red Hat Enterprise Linux BaseOS EUS (v. 8.2)Fixed RHSA-2021:2185
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2021:1739
Red Hat Enterprise Linux Real Time EUS (v. 8.2)Fixed RHSA-2021:2190
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2021:1739
Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2)Fixed RHSA-2021:2190

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-12114
  2. 2026-10-03 Alias added: GHSA-f2c7-c2h9-mxmq

References

Patch 1

Advisory 9

Other 6

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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