In the Linux kernel before 5.0.6, there is a NULL pointer dereference in…
Priority LOW 25CWE-476Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 16 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.
Why it matters now
EPSS 0.00477 41st percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 16 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 5.0.6 | Vulnerable | Linux |
| cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:* | 11.0 – 11.70.2 | Vulnerable | NetApp |
| cpe:2.3:a:netapp:fas\/aff_baseboard_management_controller:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.0.6 Vulnerable ·Linux
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:* Versions 11.0 – 11.70.2 Vulnerable ·NetApp
- cpe:2.3:a:netapp:fas\/aff_baseboard_management_controller:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:netapp:h610s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:8300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:8700:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:a400:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
- cpe:2.3:h:netapp:h610s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:8300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:8700:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:a400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
Remediation
Red Hat 5 advisories
- RHSA-2020:4609 Released 2020-11-04 · Red Hat rating Moderatekernel-rt security and bug fix update
- Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-240.rt7.54.el8, kernel-rt-core-4.18.0-240.rt7.54.el8, kernel-rt-debug-4.18.0-240.rt7.54.el8 +7
- Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-240.rt7.54.el8, kernel-rt-core-4.18.0-240.rt7.54.el8, kernel-rt-debug-4.18.0-240.rt7.54.el8 +9
- RHSA-2020:4431 Released 2020-11-04 · Red Hat rating Moderatekernel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-240.el8
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-240.el8, kernel-4.18.0-240.el8, kernel-abi-whitelists-4.18.0-240.el8 +19
- RHSA-2020:4060 Released 2020-09-29 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.el7, kernel-3.10.0-1160.el7, kernel-abi-whitelists-3.10.0-1160.el7 +8
- Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-1160.el7, kernel-3.10.0-1160.el7, kernel-abi-whitelists-3.10.0-1160.el7 +8
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.el7
- Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.el7, kernel-3.10.0-1160.el7, kernel-abi-whitelists-3.10.0-1160.el7 +11
- Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.el7, kernel-tools-libs-devel-3.10.0-1160.el7
- Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.el7, kernel-3.10.0-1160.el7, kernel-abi-whitelists-3.10.0-1160.el7 +8
- Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.el7
Show 2 more Red Hat advisories
- RHSA-2020:4062 Released 2020-09-29 · Red Hat rating Importantkernel-rt security and bug fix update
- Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.rt56.1131.el7, kernel-rt-debug-3.10.0-1160.rt56.1131.el7, kernel-rt-debug-devel-3.10.0-1160.rt56.1131.el7 +4
- Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.rt56.1131.el7, kernel-rt-debug-3.10.0-1160.rt56.1131.el7, kernel-rt-debug-devel-3.10.0-1160.rt56.1131.el7 +7
- RHSA-2020:1493 Released 2020-04-16 · Red Hat rating Importantkernel-alt security and bug fix update
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-115.19.1.el7a, kernel-abi-whitelists-4.14.0-115.19.1.el7a, kernel-alt-4.14.0-115.19.1.el7a +8
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-115.19.1.el7a, kernel-tools-libs-devel-4.14.0-115.19.1.el7a
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise MRG 2 | Affected | No fix yet: Fix deferred |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2020:4431 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2020:4431 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux Real Time (v. 8) | Fixed | RHSA-2020:4609 |
| Red Hat Enterprise Linux Real Time for NFV (v. 8) | Fixed | RHSA-2020:4609 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2020:1493 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2020:1493 |
| Red Hat Enterprise Linux for Real Time (v. 7) | Fixed | RHSA-2020:4062 |
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) | Fixed | RHSA-2020:4062 |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2019-20054
- 2026-10-03 Alias added: GHSA-jgf2-2xcw-5gxx
References
Patch 2
Sources
- CVE-2019-20054 · CVE Program
- CVE-2019-20054 · NVD
- FIRST EPSS
- GHSA-jgf2-2xcw-5gxx · GitHub Advisory Database · CC BY 4.0
- CVE-2019-20054 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences