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TI-2018-12081 Aliases CVE-2018-16871GHSA-h4fx-7429-jvf7

NULL pointer dereference in Red Hat kernel:

Priority LOW 38CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.

Why it matters now

EPSS 0.02704 86th percentileScored 2026-11-07
Fix Fixed Red Hat: 7 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Red Hatkernel:all 3.x, all 4.x up to 4.20—No fix listedCNA
  • kernel: VendorRed Hat Affected all 3.x, all 4.x up to 4.20 Fixed in — No fix listed CNA

CPE configurations NVD · 30

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*3.0 – 4.20VulnerableLinux
cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:*1.0VulnerableRed Hat
cpe:2.3:a:redhat:mrg_realtime:2.0:*:*:*:*:*:*:*2.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.0 – 4.20 Vulnerable ·Linux
  • cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:mrg_realtime:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 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_eus:7.4:*:*:*:*:*:*:* Versions 7.4 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:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
Show 20 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*7.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp

Remediation

Red Hat 7 advisories

  • RHSA-2020:1769 Released 2020-04-28 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-193.el8
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-193.el8, kernel-4.18.0-193.el8, kernel-abi-whitelists-4.18.0-193.el8 +19
  • RHSA-2020:1567 Released 2020-04-28 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-193.rt13.51.el8, kernel-rt-core-4.18.0-193.rt13.51.el8, kernel-rt-debug-4.18.0-193.rt13.51.el8 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-193.rt13.51.el8, kernel-rt-core-4.18.0-193.rt13.51.el8, kernel-rt-debug-4.18.0-193.rt13.51.el8 +9
  • RHSA-2020:0740 Released 2020-03-09 · Red Hat rating Important
    kernel-alt security and bug fix update
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-115.18.1.el7a, kernel-abi-whitelists-4.14.0-115.18.1.el7a, kernel-alt-4.14.0-115.18.1.el7a +8
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-115.18.1.el7a, kernel-tools-libs-devel-4.14.0-115.18.1.el7a
Show 4 more Red Hat advisories
  • RHSA-2019:2696 Released 2019-09-12 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) kernel-3.10.0-693.58.1.el7, kernel-abi-whitelists-3.10.0-693.58.1.el7, kernel-debug-3.10.0-693.58.1.el7 +7
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.58.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.4) kernel-3.10.0-693.58.1.el7, kernel-abi-whitelists-3.10.0-693.58.1.el7, kernel-bootwrapper-3.10.0-693.58.1.el7 +10
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.4) kernel-debug-devel-3.10.0-693.58.1.el7, kernel-tools-libs-devel-3.10.0-693.58.1.el7
  • RHSA-2019:2730 Released 2019-09-11 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.58.1.rt56.652.el6rt, kernel-rt-debug-1:3.10.0-693.58.1.rt56.652.el6rt, kernel-rt-debug-devel-1:3.10.0-693.58.1.rt56.652.el6rt +7
  • RHSA-2019:1873 Released 2019-07-29 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-957.27.2.el7, kernel-3.10.0-957.27.2.el7, kernel-abi-whitelists-3.10.0-957.27.2.el7 +9
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.27.2.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-957.27.2.el7, kernel-3.10.0-957.27.2.el7, kernel-abi-whitelists-3.10.0-957.27.2.el7 +9
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.27.2.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-957.27.2.el7, kernel-3.10.0-957.27.2.el7, kernel-abi-whitelists-3.10.0-957.27.2.el7 +12
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-957.27.2.el7, kernel-tools-libs-devel-3.10.0-957.27.2.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-957.27.2.el7, kernel-3.10.0-957.27.2.el7, kernel-abi-whitelists-3.10.0-957.27.2.el7 +9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-957.27.2.el7
  • RHSA-2019:1891 Released 2019-07-29 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-957.27.2.rt56.940.el7, kernel-rt-debug-3.10.0-957.27.2.rt56.940.el7, kernel-rt-debug-devel-3.10.0-957.27.2.rt56.940.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-957.27.2.rt56.940.el7, kernel-rt-debug-3.10.0-957.27.2.rt56.940.el7, kernel-rt-debug-devel-3.10.0-957.27.2.rt56.940.el7 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2020:1769
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2020:1769
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:1873
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:1873
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2019:1873
Red Hat Enterprise Linux ComputeNode EUS (v. 7.4)Fixed RHSA-2019:2696
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:1873
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4)Fixed RHSA-2019:2696
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2020:1567
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2020:1567
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2019:1891
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:1873
Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2019:2696
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:1873
Red Hat Enterprise Linux Server Optional EUS (v. 7.4)Fixed RHSA-2019:2696
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:1873
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:1873
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2020:0740
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2020:0740
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2019:1891
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2019:2730
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-16871
  2. 2026-10-03 Alias added: GHSA-h4fx-7429-jvf7

References

Advisory 6

Other 1

  • TI-2019-06949 Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a… CVSS 3.1HIGH 7.5
  • TI-2017-11040 Go before 1.8.4 and 1.9.x before 1.9.1 allows "go get" remote command execution. CVSS 3.1CRITICAL 9.8
  • TI-2022-01114 Improper privilege management in psgo CVSS 3.1HIGH 8.8
  • TI-2019-12251 Go before 1.12.10 and 1.13.x before 1.13.1 allow HTTP Request Smuggling. CVSS 3.1HIGH 7.5
  • TI-2019-13132 Go before 1.12.11 and 1.3.x before 1.13.2 can panic upon an attempt to process network… CVSS 3.1HIGH 7.5
  • TI-2022-10630 Incorrect default permissions in podman CVSS 3.1HIGH 7.5
See all 14 →

Sources

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