crypto: atmel-ecc - reject hardware ECDH without a public key
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-ecc - reject hardware ECDH without a public key The hardware ECDH path in atmel_ecdh_compute_shared_secret() uses the private key stored in the device. However, the public key is cached only after atmel_ecdh_set_secret() successfully generated that private key for the current tfm. atmel_ecdh_generate_public_key() already rejects requests when no public key is cached. Add the same check to atmel_ecdh_compute_shared_secret() to prevent the device from using a private key that was not generated for the current tfm.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-93160
- 2026-10-03 Alias added: GHSA-qjm8-c6rq-8r66
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Affected versions changed · Red Hat
- 2026-10-21 CVSS score added · Red Hat
- 2026-11-06 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/5e33791dfcc6459e402a524669093cd953d5b2df
- https://git.kernel.org/stable/c/33241f198287960bba5fc2251400896762650bfa
- https://git.kernel.org/stable/c/3ea8b780d68f02fe235c5051ce8ac4b4940b9259
- https://git.kernel.org/stable/c/6457162f74f45284ade2da644a4f0c54758ac0a6
- https://git.kernel.org/stable/c/2b40bab362d2b598f34e5ccd4694cedc3c2553d4
- https://git.kernel.org/stable/c/e64d6f1aae8c837cb3f0446bf44108226d7370f4
- https://git.kernel.org/stable/c/add28e9988902d29ea93f4869280b4a16a049ea5
- https://git.kernel.org/stable/c/f240f9b588f4e2de89822adebf560a96b5d263ed
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Sources
- CVE-2026-93160 · CVE Program
- CVE-2026-93160 · NVD
- FIRST EPSS
- GHSA-qjm8-c6rq-8r66 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-93160 · Red Hat security data · CC BY 4.0
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