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TI-2019-15122 Aliases CVE-2019-20908GHSA-8v2w-6qhm-pxp7

An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4.

Priority LOW 30Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
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

An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032.

Why it matters now

EPSS 0.00536 45th percentileScored 2026-11-07
Fix Fixed Red Hat: 4 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 · 4

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 5.4VulnerableLinux
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.4 Vulnerable ·Linux
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical

Remediation

Red Hat 4 advisories

  • RHSA-2020:3228 Released 2020-07-29 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.0) bpftool-4.18.0-80.27.2.el8_0, kernel-4.18.0-80.27.2.el8_0, kernel-abi-whitelists-4.18.0-80.27.2.el8_0 +16
  • RHSA-2020:3222 Released 2020-07-29 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v. 8.1) kernel-tools-libs-devel-4.18.0-147.24.2.el8_1
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) bpftool-4.18.0-147.24.2.el8_1, kernel-4.18.0-147.24.2.el8_1, kernel-abi-whitelists-4.18.0-147.24.2.el8_1 +19
  • RHSA-2020:3218 Released 2020-07-29 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-193.14.3.el8_2
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-193.14.3.el8_2, kernel-4.18.0-193.14.3.el8_2, kernel-abi-whitelists-4.18.0-193.14.3.el8_2 +21
Show 1 more Red Hat advisories
  • RHSA-2020:3219 Released 2020-07-29 · Red Hat rating Moderate
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-193.14.3.rt13.67.el8_2, kernel-rt-core-4.18.0-193.14.3.rt13.67.el8_2, kernel-rt-debug-4.18.0-193.14.3.rt13.67.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-193.14.3.rt13.67.el8_2, kernel-rt-core-4.18.0-193.14.3.rt13.67.el8_2, kernel-rt-debug-4.18.0-193.14.3.rt13.67.el8_2 +9

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-2020:3218
Red Hat CodeReady Linux Builder EUS (v. 8.1)Fixed RHSA-2020:3222
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2020:3218
Red Hat Enterprise Linux BaseOS E4S (v. 8.0)Fixed RHSA-2020:3228
Red Hat Enterprise Linux BaseOS EUS (v. 8.1)Fixed RHSA-2020:3222
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2020:3219
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2020:3219
Not affected: 4 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise MRG 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-20908
  2. 2026-10-03 Alias added: GHSA-8v2w-6qhm-pxp7

References

Patch 2

Advisory 11

Sources

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