CVE-2026-71968 (GCVE-0-2026-71968)

Vulnerability from cvelistv5 – Published: 2026-08-10 18:15 – Updated: 2026-08-17 18:18 X_Open Source
VLAI
Title
OP-TEE OS 4.10.0 Use-After-Free via Trusted Application Loader TA_FLAG_CONCURRENT
Summary
OP-TEE OS through 4.10.0, fixed in commit 8794043, contains a use-after-free vulnerability in the Trusted Application loader that allows attackers with the ability to load a signed Trusted Application to corrupt secure-world kernel memory by setting the TA_FLAG_CONCURRENT flag in a user TA signed header. Attackers can cause two concurrent sessions to operate on the same shared context without locking, corrupting the uctx->vm_info.regions list during memref parameter mapping and unmapping to free vm_region nodes still in use, resulting in a use-after-free in S-EL1 secure-world kernel memory.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
6.7 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 17:08 UTC
CWE
  • CWE-416 - Use After Free
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7140 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
OP-TEE optee_os Affected: 0 , ≤ 4.10.0 (semver)
Unaffected: 8794043c4065c26a2b8b1313794ba5ba5f06d296 (git)
    cpe:2.3:o:op-tee:op-tee_os:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-07-30 00:00
Credits
Argus Systems - ByteRay Ltd.
Show details on NVD website
To clipboard 

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