CVE-2026-71968OP-TEE OS 4.10.0 Use-After-Free via Trusted Application Loader TA_FLAG_CONCURRENT
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.7 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-416, CWE-362
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OP-TEE optee_os op_tee:optee_os (from the name) | through 4.10.0; 8794043c4065c26a2b8b1313794ba5ba5f06d296 not affected | CNA record |
References
- https://github.com/OP-TEE/optee_os/pull/7900issue-tracking
- https://github.com/OP-TEE/optee_os/commit/8794043c4065c26a2b8b1313794ba5ba5f06d296patch
- https://www.vulncheck.com/advisories/op-tee-os-use-after-free-via-trusted-application-loader-ta-flag-concurrentthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.