CVE-2026-93160

Description

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.

References

• https://git.kernel.org/stable/c/2b40bab362d2b598f34e5ccd4694cedc3c2553d4
• https://git.kernel.org/stable/c/33241f198287960bba5fc2251400896762650bfa
• https://git.kernel.org/stable/c/3ea8b780d68f02fe235c5051ce8ac4b4940b9259
• https://git.kernel.org/stable/c/5e33791dfcc6459e402a524669093cd953d5b2df
• https://git.kernel.org/stable/c/6457162f74f45284ade2da644a4f0c54758ac0a6