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TI-2022-03380 Aliases CVE-2022-3675GHSA-747q-wq4p-22g3

Improper input validation in Fedora Project CoreOS

Priority LOW 24CWE-20Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-306.

Summary

Fedora CoreOS supports setting a GRUB bootloader password using a Butane config. When this feature is enabled, GRUB requires a password to access the GRUB command-line, modify kernel command-line arguments, or boot non-default OSTree deployments. Recent Fedora CoreOS releases have a misconfiguration which allows booting non-default OSTree deployments without entering a password. This allows someone with access to the GRUB menu to boot into an older version of Fedora CoreOS, reverting any security fixes that have recently been applied to the machine. A password is still required to modify kernel command-line arguments and to access the GRUB command line.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00185 8th percentileScored 2026-11-07
Fix Fixed CoreOS (Fedora Project): testing 36.20221030.2.0 , next 37.20221031.1.0, stable 36.20221014.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Fedora ProjectCoreOStesting 36.20220906.2.0 and later to before testing 36.20221030.2.0 ; next 36.20220906.1.0 and later to before next 37.20221031.1.0; stable 36.20220820.3.0 and later to before stable 36.20221014.3.0testing 36.20221030.2.0 , next 37.20221031.1.0, stable 36.20221014.3.0Patch availableCNA
  • CoreOS VendorFedora Project Affected testing 36.20220906.2.0 and later to before testing 36.20221030.2.0 ; next 36.20220906.1.0 and later to before next 37.20221031.1.0; stable 36.20220820.3.0 and later to before stable 36.20221014.3.0 Fixed in testing 36.20221030.2.0 , next 37.20221031.1.0, stable 36.20221014.3.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:fedora_coreos:*:*:*:*:*:*:*:*36.20220820.3.0 to before 37.20221031.1.0VulnerableRed Hat
  • cpe:2.3:a:redhat:fedora_coreos:*:*:*:*:*:*:*:* Versions 36.20220820.3.0 to before 37.20221031.1.0 Vulnerable ·Red Hat

Remediation

  • Fix · CNA CoreOS (Fedora Project) Fixed in testing 36.20221030.2.0 , next 37.20221031.1.0, stable 36.20221014.3.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-3675
  2. 2026-10-03 Alias added: GHSA-747q-wq4p-22g3

References

Advisory 3

  • TI-2026-53862 Out-of-bounds write in GraphicsMagick PCD decoder CVSS 4.0HIGH 8.4
  • TI-2018-10503 Uncontrolled resource consumption in Fedora Project 389-ds-base CVSS 3.0HIGH 7.5
  • TI-2025-01086 Kernel: secure boot does not automatically enable kernel lockdown CVSS 3.1HIGH 7.7
  • TI-2012-04654 A certain Red Hat build of the pam_ssh_agent_auth module on Red Hat Enterprise Linux… CVSS 2.0MEDIUM 6.2

Sources

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