CVE-2026-109970
Clevis: clevis: pkcs#11 token pin written to world-readable file
A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS#11 token PIN in plaintext to a file without setting restrictive permissions. Under the default process umask, the file is world-readable. Additionally, the PIN file is not reliably cleaned up if the decryption script exits early, leaving the PIN accessible indefinitely.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Clevis: clevis: pkcs#11 token pin written to world-readable file
A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS#11 token PIN in plaintext to a file without setting restrictive permissions. Under the default process umask, the file is world-readable. Additionally, the PIN file is not reliably cleaned up if the decryption script exits early, leaving the PIN accessible indefinitely.
- Record
CVE-2026-109970- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-538
- Updated
- 2026-11-05
EUVDEUVD-2026-100955
A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS#11 token PIN in plaintext to a file without setting restrictive permissions. Under the default process umask, the file is world-readable. Additionally, the PIN file is not reliably cleaned up if the decryption script exits early, leaving the PIN accessible indefinitely.
- Record
EUVD-2026-100955- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-05
GitHub AdvisoriesGHSA-px84-jf5m-hcjv
A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS...
A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS#11 token PIN in plaintext to a file without setting restrictive permissions. Under the default process umask, the file is world-readable. Additionally, the PIN file is not reliably cleaned up if the decryption script exits early, leaving the PIN accessible indefinitely.
- Record
GHSA-px84-jf5m-hcjv- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-538
- Updated
- 2026-11-02
NVD
A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS#11 token PIN in plaintext to a file without setting restrictive permissions. Under the default process umask, the file is world-readable. Additionally, the PIN file is not reliably cleaned up if the decryption script exits early, leaving the PIN accessible indefinitely.
- Record
CVE-2026-109970- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-538
- Updated
- 2026-11-05
OSVDEBIAN-CVE-2026-109970
A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS#11 token PIN in plaintext to a file without setting restrictive permissions. Under the default process umask, the file is world-readable. Additionally, the PIN file is not reliably cleaned up if the decryption script exits early, leaving the PIN accessible indefinitely.
- Record
DEBIAN-CVE-2026-109970- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-109970
A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS#11 token PIN in plaintext to a file without setting restrictive permissions. Under the default process umask, the file is world-readable. Additionally, the PIN file is not reliably cleaned up if the decryption script exits early, leaving the PIN accessible indefinitely.
- Record
UBUNTU-CVE-2026-109970- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
clevisDebian:12 |
All versions, plus listed versions 19-219-319-419-519-6 Show 4 moreShow less20-122-123-124-1 |
None known |
clevisDebian:13 |
All versions, plus listed versions 20-122-123-124-1 |
None known |
clevisDebian:14 |
before 24-1, plus listed versions 20-122-123-1 |
24-1 |
clevisUbuntu:18.04:LTS |
All versions, plus listed versions 8-18-1ubuntu0.18-1ubuntu0.2 |
None known |
clevisUbuntu:20.04:LTS |
All versions, plus listed versions 11-212-1ubuntu112-1ubuntu212-1ubuntu2.112-1ubuntu2.212-1ubuntu2.3 |
None known |
clevisUbuntu:22.04:LTS |
All versions, plus listed versions 16-218-118-1ubuntu118-1ubuntu1.1 |
None known |
clevisUbuntu:24.04:LTS |
All versions, plus listed versions 19-319-619-6build119-6build220-120-1ubuntu0.24.04.1 |
None known |
clevisUbuntu:26.10 |
All versions, plus listed versions 20-1ubuntu223-123-1build1 |
None known |
clevisUbuntu:26.04:LTS |
All versions, plus listed versions 20-120-1build120-1ubuntu120-1ubuntu2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-109970 is a medium vulnerability (CVSS 4.7) in Red Hat Enterprise Linux 10, published October 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 2nd percentile. Fixed in clevis 24-1.