USN-7860-5

Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this to expose sensitive information from the host OS.

References

Affected packages

Ubuntu:24.04:LTS / linux-hwe-6.14

Package

Name: linux-hwe-6.14
Purl: pkg:deb/ubuntu/linux-hwe-6.14@6.14.0-35.35~24.04.1?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

6.14.0-35.35~24.04.1

Affected versions

6.*

6.14.0-24.24~24.04.3

6.14.0-27.27~24.04.1

6.14.0-28.28~24.04.1

6.14.0-29.29~24.04.1

6.14.0-32.32~24.04.1

6.14.0-33.33~24.04.1

6.14.0-34.34~24.04.1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-buildinfo-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-buildinfo-6.14.0-35-generic-64k"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-cloud-tools-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-headers-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-headers-6.14.0-35-generic-64k"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-hwe-6.14-cloud-tools-6.14.0-35"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-hwe-6.14-headers-6.14.0-35"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-hwe-6.14-tools-6.14.0-35"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-image-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-image-unsigned-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-image-unsigned-6.14.0-35-generic-64k"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-lib-rust-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-modules-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-modules-6.14.0-35-generic-64k"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-modules-extra-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-modules-ipu6-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-modules-ipu7-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-modules-iwlwifi-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-modules-usbio-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-modules-vision-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-tools-6.14.0-35-generic"
        },
        {
            "binary_version": "6.14.0-35.35~24.04.1",
            "binary_name": "linux-tools-6.14.0-35-generic-64k"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-40300",
            "severity": [
                {
                    "score": "high",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}