Timing Attack Affecting op-tee/optee_os package, versions [4.5.0,]
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-UNMANAGED-OPTEEOPTEEOS-17872231
- published6 Jul 2026
- disclosed6 Jul 2026
- creditUnknown
Introduced: 6 Jul 2026
NewCVE-2026-41516 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Timing Attack through the memcmp function used for label hash verification, which operates in non-constant time and exposes multiple distinguishable error paths. An attacker can recover plaintext data by exploiting timing differences and error responses during decryption operations.
Workaround
This vulnerability can be mitigated by disabling the Hisilicon HPRE RSA driver with the configuration option CFG_HISILICON_ACC_V3=n.