What’s Vulnerable › Vulnerabilities

CVE-2021-34387

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-21 · updated 2026-06-17
• Weakness: CWE-276

Description

The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access permission settings where the portion of the DRAM reserved for TrustZone is identity-mapped by TLK with read, write, and execute permissions, which gives write access to kernel code and data that is otherwise mapped read only.

Affected products

• NVIDIA Jetson TX1: before 32.5.1 — fixed in 32.5.1

How to fix

Upgrade to a fixed version: NVIDIA Jetson TX1 32.5.1. Check the vendor advisory for mitigations.

References

• https://nvidia.custhelp.com/app/answers/detail/a_id/5205
• https://nvidia.custhelp.com/app/answers/detail/a_id/5205

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