CVE-2026-93160

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux11105693fa05f499532b330da65c78ff93ed4440 < 5e33791dfcc6459e402a524669093cd953d5b2dfaffected
LinuxLinux11105693fa05f499532b330da65c78ff93ed4440 < 33241f198287960bba5fc2251400896762650bfaaffected
LinuxLinux11105693fa05f499532b330da65c78ff93ed4440 < 3ea8b780d68f02fe235c5051ce8ac4b4940b9259affected
LinuxLinux11105693fa05f499532b330da65c78ff93ed4440 < 6457162f74f45284ade2da644a4f0c54758ac0a6affected
LinuxLinux11105693fa05f499532b330da65c78ff93ed4440 < 2b40bab362d2b598f34e5ccd4694cedc3c2553d4affected
LinuxLinux11105693fa05f499532b330da65c78ff93ed4440 < e64d6f1aae8c837cb3f0446bf44108226d7370f4affected
LinuxLinux11105693fa05f499532b330da65c78ff93ed4440 < add28e9988902d29ea93f4869280b4a16a049ea5affected
LinuxLinux11105693fa05f499532b330da65c78ff93ed4440 < f240f9b588f4e2de89822adebf560a96b5d263edaffected
LinuxLinux4.14affected
LinuxLinux0 < 4.14unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References