TI-2022-09019 Aliases CVE-2022-25327 GHSA-8vwm-8vj8-rqjf

Local Denial of Service in fscrypt PAM module

LOW 24CWE-255Published 2022-02-25 · Updated 2025-04-21

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

The PAM module for fscrypt doesn't adequately validate fscrypt metadata files, allowing users to create malicious metadata files that prevent other users from logging in. A local user can cause a denial of service by creating a fscrypt metadata file that prevents other users from logging into the system. We recommend upgrading to version 0.3.3 or above

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00114 1st percentileScored 2026-11-07

Fix Fixed github.com/google/fscrypt (Go): 0.3.3

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

Vendor	Product	Affected versions	Fixed in	Status	Source
Google	fscrypt	up to 0.3.2	—	No fix listed	CNA
—	github.com/google/fscrypt (Go)	before 0.3.3	0.3.3	Patch available	GHSA-8vwm-8vj8-rqjf

fscrypt VendorGoogle Affected up to 0.3.2 Fixed in — No fix listed CNA
github.com/google/fscrypt (Go) Vendor— Affected before 0.3.3 Fixed in 0.3.3 Patch available GHSA-8vwm-8vj8-rqjf

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:google:fscrypt::::::::	before 0.3.3	Vulnerable	Google

cpe:2.3:a:google:fscrypt:*:*:*:*:*:*:*:* Versions before 0.3.3 Vulnerable ·Google

Remediation

Fix · GHSA-8vwm-8vj8-rqjf github.com/google/fscrypt (Go) Fixed in 0.3.3 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2022-25327
2026-10-03 Alias added: GHSA-8vwm-8vj8-rqjf

References

Patch 1

https://github.com/google/fscrypt/pull/346

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2022-25327

Other 2

TI-2022-09020 Privilege escalation through command injection in fscrypt CVSS 3.1HIGH 7.3
TI-2018-04834 The pam_fscrypt module in fscrypt before 0.2.4 may incorrectly restore primary and… CVSS 3.0MEDIUM 6.5
TI-2022-09018 Denial of Service in fscrypt CVSS 3.1MEDIUM 5.5

Sources

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