Buffer overflow in libtpms
Priority LOW 24CWE-120Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-120 and the CVSS impact.
Summary
A stack corruption bug was found in libtpms in versions before 0.7.2 and before 0.8.0 while decrypting data using RSA. This flaw could result in a SIGBUS (bad memory access) and termination of swtpm. The highest threat from this vulnerability is to system availability.
Why it matters now
EPSS 0.00259 17th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
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 |
|---|---|---|---|---|---|
| — | libtpms | libtpms 0.7.2, libtpms 0.8.0 | — | No fix listed | CNA |
- libtpms Vendor— Affected libtpms 0.7.2, libtpms 0.8.0 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libtpms_project:libtpms:*:*:*:*:*:*:*:* | before 0.7.2; 0.7.3 to before 0.8.0 | Vulnerable | Libtpms Project |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* | 8.0 | Vulnerable | Red Hat |
- cpe:2.3:a:libtpms_project:libtpms:*:*:*:*:*:*:*:* Versions before 0.7.2; 0.7.3 to before 0.8.0 Vulnerable ·Libtpms Project
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* Versions 8.0 Vulnerable ·Red Hat
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 Advanced Virtualization | Affected | No fix planned: Will not fix |
Not affected: 2 products
- Red Hat Enterprise Linux 8 Advanced Virtualization
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2021-3569
- 2026-10-03 Alias added: GHSA-ppc8-jm88-74j3
References
Sources
- CVE-2021-3569 · CVE Program
- CVE-2021-3569 · NVD
- FIRST EPSS
- GHSA-ppc8-jm88-74j3 · GitHub Advisory Database · CC BY 4.0
- CVE-2021-3569 · Red Hat security data · CC BY 4.0
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