Vulnerability · Published Jul 6, 2026 · Assigned by GitHub_M
CVE-2026-41434OP-TEE has unbounded recursion in sanitize_client_object()
Low 3.3
In plain English
A low-severity stack buffer overflow in optee_os from OP-TEE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities).
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.2%top 95.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 3.10.0 and prior to version 4.11.0, an unbounded recursion can crash the PKCS#11 TA. Version 4.11.0 contains a patch. No known workarounds are available.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | optee-os | no fix listed | DEBIAN-CVE-2026-41434 |
| Ubuntu:25.10 | optee-os | no fix listed | UBUNTU-CVE-2026-41434 |
| Ubuntu:26.04:LTS | optee-os | no fix listed | UBUNTU-CVE-2026-41434 |
| Ubuntu:26.10 | optee-os | no fix listed | UBUNTU-CVE-2026-41434 |
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
References
- https://github.com/OP-TEE/optee_os/security/advisories/GHSA-wh38-23ff-grff x_refsource_CONFIRM