CVE-2026-40290

[CVE catalog]

Severity

High · CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

Jun 3, 2026, 4:45:51 PM UTC

Source

[NVD] · [CVE record]

EPSS

0.19% · Oct 25, 2026

A flaw was found in OP-TEE (Trusted Execution Environment). A local attacker could exploit a user-after-free (UAF) race condition in the shared memory teardown logic when OP-TEE is configured as a Secure Partition Management Controller (SPMC) for Secure EL0 (S-EL0) Secure Partitions. This vulnerability occurs because the system fails to properly synchronize memory deallocation, allowing a thread to access memory after it has been freed. Successful exploitation could lead to privilege escalation, enabling the attacker to execute arbitrary code within the trusted environment. Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.