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CVE-2018-6558
The pam_fscrypt module in fscrypt before 0.2.4 may incorrectly restore primary and supplementary group IDs to the values associated with…
Medium6.5EPSS 0.62%
- Published
- Updated
- Reserved
- Assigned by
- canonical
Description
The pam_fscrypt module in fscrypt before 0.2.4 may incorrectly restore primary and supplementary group IDs to the values associated with the root user, which allows attackers to gain privileges via a successful login through certain applications that use Linux-PAM (aka pam).
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.62% · top 50% of all CVEs (4 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
- n/a
Affected products
- affected before 0.2.4
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/google/fscryptGHSA-qj26-7grj-whg3 (opens in a new tab)
References (4)
- https://github.com/google/fscrypt/issues/77 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/google/fscrypt/commit/3022c1603d968c22f147b4a2c49c4637dd1be91b (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/google/fscrypt/commit/315f9b042237200174a1fb99427f74027e191d66 (opens in a new tab)x_refsource_MISCx_transferred
- https://launchpad.net/bugs/1787548 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-qj26-7grj-whg3 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2018-6558)Record last updated .