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-17872226
- published6 Jul 2026
- disclosed6 Jul 2026
- creditUnknown
Introduced: 6 Jul 2026
NewCVE-2026-41514 (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 in the memcmp function used for label hash verification in the RSA-OAEP decryption implementation of the Hisilicon HPRE crypto driver, due to the use of non-constant-time comparison and multiple distinguishable error paths. An attacker can recover plaintext data by performing adaptive chosen ciphertext queries and analyzing the resulting error responses. This is only exploitable if running on plat-d06 with CFG_HISILICON_ACC_V3=y, which is disabled by default.
Workaround
This vulnerability can be mitigated by disabling the Hisilicon HPRE RSA driver with CFG_HISILICON_ACC_V3=n.