Vulnerability in Nxp I.mx 6ultralite
CVE-2021-44149
An issue was discovered in Trusted Firmware OP-TEE Trusted OS through 3.15.0. The OPTEE-OS CSU driver for NXP i.MX6UL SoC devices lacks security access configuration for wakeup-related registers, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/write operations on Secure World memory. This involves a v cycle.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- github.com/OP-TEE/optee_os/tags (Third Party Advisory, Release Notes)
- github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-Ref_FSC-HW… (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-44149?
- CVE-2021-44149 is a high-severity vulnerability in Nxp I.mx 6ultralite. CVSS score: 7.8/10. Published 2021-12-07.
- How severe is CVE-2021-44149?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-44149 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.