An issue was discovered in p11-kit 0.21.1 through 0.23.21.
Priority LOW 28CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Partial Red Hat: 1 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.
Summary
An issue was discovered in p11-kit 0.21.1 through 0.23.21. A heap-based buffer over-read has been discovered in the RPC protocol used by thep11-kit server/remote commands and the client library. When the remote entity supplies a byte array through a serialized PKCS#11 function call, the receiving entity may allow the reading of up to 4 bytes of memory past the heap allocation.
Why it matters now
EPSS 0.0227 83rd percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:p11-kit_project:p11-kit:*:*:*:*:*:*:*:* | 0.23.6 to before 0.23.22 | Vulnerable | P11-kit Project |
- cpe:2.3:a:p11-kit_project:p11-kit:*:*:*:*:*:*:*:* Versions 0.23.6 to before 0.23.22 Vulnerable ·P11-kit Project
Remediation
Red Hat 1 advisory
- RHSA-2021:1609 Released 2021-05-18 · Red Hat rating Moderatep11-kit security, bug fix, and enhancement update
- Red Hat Enterprise Linux BaseOS (v. 8) p11-kit-0.23.22-1.el8, p11-kit-devel-0.23.22-1.el8, p11-kit-server-0.23.22-1.el8 +1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2021:1609 |
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2020-29362
References
More P11-kit Project P11-kit vulnerabilities
- TI-2026-01754 P11-kit: null dereference via c_derivekey with specific null parameters CVSS 3.1HIGH 7.5
- TI-2020-17646 An issue was discovered in p11-kit 0.23.6 through 0.23.21. CVSS 3.1HIGH 7.5
- TI-2020-17644 An issue was discovered in p11-kit 0.21.1 through 0.23.21. CVSS 3.1HIGH 7.5
- TI-2026-11598 P11-kit: stack exhaustion via unbounded recursion in rpc attribute parsing CVSS 3.1MEDIUM 6.2
Sources
- CVE-2020-29362 · CVE Program
- CVE-2020-29362 · NVD
- FIRST EPSS
- CVE-2020-29362 · Red Hat security data · CC BY 4.0
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