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CVE-2026-42546

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 3.3.0 and prior to version 4.11.0, a resource leak exists in OP-TEE’s shared memory cleanup logic because the function `cleanup_shm_refs()` in `core/tee/entry_std.c` fails to apply a required bitmask (`OPTEE_MSG_ATTR_TYPE_MASK`) to parameter attributes. When processing non-contiguous memory parameters from a normal-
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:670d2b79db5d6ef24960772292bd4c0a3c2f6e2e2b0870770a28d3fcc6a22866
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":">= 3.3.0, < 4.11.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b3d2eaf699247dc72ac13d097c3e05120921654aa808b3dd3b8bd91b7c197fb7 · sha256:f20a68053869a3e0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":3.8,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b3d2eaf699247dc72ac13d097c3e05120921654aa808b3dd3b8bd91b7c197fb7 · sha256:f20a68053869a3e0… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b3d2eaf699247dc72ac13d097c3e05120921654aa808b3dd3b8bd91b7c197fb7 · sha256:f20a68053869a3e0… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-c7j8-fgqw-rcgp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-c7j8-fgqw-rcgp"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b3d2eaf699247dc72ac13d097c3e05120921654aa808b3dd3b8bd91b7c197fb7 · sha256:f20a68053869a3e0… · /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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