UBUNTU-CVE-2026-53763

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Source

https://ubuntu.com/security/CVE-2026-53763

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53763.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-53763

Upstream

CVE-2026-53763

Published

2026-07-06T20:16:00Z

Modified

2026-07-09T17:17:06.277506023Z

Severity

3.8 (Low) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N 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 3.0.0 and prior to version 4.11.0, 32-bit integer overflows in OP-TEE core's AES-GCM implementation cause the authentication tag to be computed with incorrect bit-length values after processing more than 512 megabytes of payload or Additional Authenticated Data (AAD). Version 4.11.0 contains a patch. No known workarounds are available.

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_name": "optee-os",
            "binary_version": "4.7.0-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53763.json"

Ubuntu:26.04:LTS / optee-os