Improper Verification of Cryptographic Signature Affecting optee-os package, versions <4.10.0-2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-OPTEEOS-17140239
- published4 Jun 2026
- disclosed3 Jun 2026
Introduced: 3 Jun 2026
CVE-2026-45614 (opens in a new tab)How to fix?
Upgrade Debian:unstable optee-os to version 4.10.0-2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream optee-os package and not the optee-os package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Prior to version 4.11.0, on many of the ECDH shared secret paths, the public key isn't verified to be a point on the correct curve. By passing approximately 30-40 crafted public keys to OP-TEE, the private key can be reconstructed by a normal world attacker. When calling TEE_DeriveKey the public key is provided with full X and Y values, but the (X, Y) point might not satisfy the Y^2 == X^3 + aX + b mod P math for the specific curve that is used. When those public keys aren't rejected, the attacker can select public keys such that each DeriveKey call will leak d % r where d is the private key and r comes from the relationship between the correct curve and the attacker selected curve. With enough leaked data the Chinese remainder theorem can be used to recover the full private key. Version 4.11.0 fixes the issue.