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CVE-2026-40290

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 3.16.0 and prior to 4.11.0, a user-after-free (UAF) race condition exists in the shared memory teardown logic of FF-A within OP-TEE SPMC/SP flows. This only applies when OP-TEE is configured as an SPMC for S-EL0 SPs, that is, with `CFG_SECURE_PARTITION=y`. The function `sp_mem_remove()`, responsible for freeing entr
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ede6c9b9809796e34f98c568797c3734f8487ec2d6544ce42074a253903af7e5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"optee_os","vendor":"OP-TEE","versions":[{"status":"affected","version":">= 3.16.0, < 4.11.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c5ebb975de8894a2e6c5831a186d8a96edc7992cd829df64258f003012ff38d7 · sha256:2cd4d0c3d6eb2420… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c5ebb975de8894a2e6c5831a186d8a96edc7992cd829df64258f003012ff38d7 · sha256:2cd4d0c3d6eb2420… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c5ebb975de8894a2e6c5831a186d8a96edc7992cd829df64258f003012ff38d7 · sha256:2cd4d0c3d6eb2420… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-332c-xr93-849m"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c5ebb975de8894a2e6c5831a186d8a96edc7992cd829df64258f003012ff38d7 · sha256:2cd4d0c3d6eb2420… · /containers/adp/0/references/0
{"name":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-332c-xr93-849m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-332c-xr93-849m"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c5ebb975de8894a2e6c5831a186d8a96edc7992cd829df64258f003012ff38d7 · sha256:2cd4d0c3d6eb2420… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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