Read the docs
TI-2020-15984 Aliases CVE-2020-26147GHSA-f393-4p85-6h6g

An issue was discovered in the Linux kernel 5.8.9.

Priority LOW 35Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
Low · High · None
Fix status
Partial Red Hat: 4 fixed, 3 without a fix

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

Summary

An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used.

Why it matters now

EPSS 0.07604 94th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 4 fixed, 3 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 · 14

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.4 to before 4.4.271; 4.9 to before 4.9.271; 4.14 to before 4.14.235; 4.19 to before 4.19.193; 5.4 to before 5.4.124; 5.10 to before 5.10.42; 5.12 to before 5.12.9VulnerableLinux
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:arista:c-75_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableArista
cpe:2.3:h:arista:c-75:-:*:*:*:*:*:*:*not specified by NVDRunning onArista
cpe:2.3:o:arista:o-90_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableArista
cpe:2.3:h:arista:o-90:-:*:*:*:*:*:*:*not specified by NVDRunning onArista
cpe:2.3:o:arista:c-65_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableArista
cpe:2.3:h:arista:c-65:-:*:*:*:*:*:*:*not specified by NVDRunning onArista
cpe:2.3:o:arista:w-68_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableArista
cpe:2.3:h:arista:w-68:-:*:*:*:*:*:*:*not specified by NVDRunning onArista
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.4 to before 4.4.271; 4.9 to before 4.9.271; 4.14 to before 4.14.235; 4.19 to before 4.19.193; 5.4 to before 5.4.124; 5.10 to before 5.10.42; 5.12 to before 5.12.9 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:arista:c-75_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arista
  • cpe:2.3:h:arista:c-75:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arista
  • cpe:2.3:o:arista:o-90_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arista
  • cpe:2.3:h:arista:o-90:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arista
  • cpe:2.3:o:arista:c-65_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arista
  • cpe:2.3:h:arista:c-65:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arista
  • cpe:2.3:o:arista:w-68_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Arista
  • cpe:2.3:h:arista:w-68:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Arista
Show 4 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:siemens:scalance_w700_ieee_802.11n_firmware:*:*:*:*:*:*:*:*all versionsVulnerableSiemens
cpe:2.3:h:siemens:scalance_w700_ieee_802.11n:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
cpe:2.3:o:siemens:scalance_w1700_ieee_802.11ac_firmware:*:*:*:*:*:*:*:*all versionsVulnerableSiemens
cpe:2.3:h:siemens:scalance_w1700_ieee_802.11ac:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
  • cpe:2.3:o:siemens:scalance_w700_ieee_802.11n_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
  • cpe:2.3:h:siemens:scalance_w700_ieee_802.11n:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
  • cpe:2.3:o:siemens:scalance_w1700_ieee_802.11ac_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Siemens
  • cpe:2.3:h:siemens:scalance_w1700_ieee_802.11ac:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens

Remediation

Red Hat 2 advisories

  • RHSA-2021:4356 Released 2021-11-09 · Red Hat rating Moderate
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-348.el8
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-348.el8, kernel-4.18.0-348.el8, kernel-abi-stablelists-4.18.0-348.el8 +19
  • RHSA-2021:4140 Released 2021-11-09 · Red Hat rating Moderate
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-348.rt7.130.el8, kernel-rt-core-4.18.0-348.rt7.130.el8, kernel-rt-debug-4.18.0-348.rt7.130.el8 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-348.rt7.130.el8, kernel-rt-core-4.18.0-348.rt7.130.el8, kernel-rt-debug-4.18.0-348.rt7.130.el8 +9

Vendor assessments

Red Hat

Red Hat rating: Low. 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: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:4356
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:4356
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2021:4140
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2021:4140
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-26147
  2. 2026-10-03 Alias added: GHSA-f393-4p85-6h6g

References

Patch 1

Advisory 6

Other 1

Sources

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