GMS-2022-179: Denial of service via insufficient metadata validation

March 1, 2022 (updated June 8, 2026)

The PAM module for fscrypt through v0.3.2 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 v0.3.3 or above.

For more details, see CVE-2022-25327.

References

github.com/advisories/GHSA-p93v-m2r2-4387
github.com/google/fscrypt/commit/91aa3ebf42032ca783c41f9ec25d885875f66ddb
github.com/google/fscrypt/security/advisories/GHSA-p93v-m2r2-4387
pkg.go.dev/vuln/GO-2022-0340

Code Behaviors & Features

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