UBUNTU-CVE-2026-41516

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Source

https://ubuntu.com/security/CVE-2026-41516

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-41516.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-41516

Upstream

CVE-2026-41516

Published

2026-07-06T20:16:00Z

Modified

2026-07-09T17:15:14.552628506Z

Severity

2.5 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/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 4.5.0 and prior to version 4.11.0, the RSA PKCS#1 v1.5 decryption implementation in the Hisilicon HPRE crypto driver uses non-constant-time memcmp() for label hash verification and has multiple distinguishable error paths. This creates a Bleichenbacher-style padding oracle that allows an attacker to recover RSA PKCS#1 v1.5 plaintext. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with CFG_HISILICON_ACC_V3=n.

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-2026-41516.json"

Ubuntu:26.04:LTS / optee-os