UBUNTU-CVE-2026-45702

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Source

https://ubuntu.com/security/CVE-2026-45702

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45702.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-45702

Upstream

CVE-2026-45702

Published

2026-06-03T19:16:00Z

Modified

2026-06-12T09:02:01.709712331Z

Severity

4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

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 4.3.0 and prior to version 4.11.0, a type confusion vulnerability exists in OP-TEE OS when processing an FFAMEMSHARE request from the normal world. This only applies when OP-TEE is configured as an SPMC for S-EL0 SPs, that is, with CFG_CORE_SEL1_SPMC=y and CFG_SECURE_PARTITION=y. Version 4.11.0 fixes the issue.

References

Affected packages

Ubuntu:25.10 / optee-os

Package

Name: optee-os
Purl: pkg:deb/ubuntu/optee-os?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.5.0-1

4.5.0-2

4.7.0-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "4.7.0-1",
            "binary_name": "optee-os"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45702.json"

Ubuntu:26.04:LTS / optee-os