| Name | CVE-2021-36133 |
| Description | The OPTEE-OS CSU driver for NXP i.MX SoC devices lacks security access configuration for several models, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/write operations on Secure World memory. This involves a DMA capable peripheral. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| optee-os (PTS) | sid, trixie | 4.3.0-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| optee-os | source | (unstable) | (unfixed) | unimportant | | |
Notes
https://github.com/OP-TEE/optee_os/security/advisories/GHSA-6q85-3ph3-rm47
Upstream does not share F-Secure's view (the reporters) on the severity and
does not consider this to be a security issue.