USN-7860-2

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Source
https://ubuntu.com/security/notices/USN-7860-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7860-2.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-7860-2
Upstream
Related
Published
2025-11-06T13:32:32.603705Z
Modified
2025-11-07T09:47:32.413245Z
Summary
linux-realtime-6.14 vulnerability
Details

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:Pro:24.04:LTS:Realtime:Kernel / linux-realtime-6.14

Package

Name
linux-realtime-6.14
Purl
pkg:deb/ubuntu/linux-realtime-6.14@6.14.0-1015.15~24.04.1?arch=source&distro=realtime/noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.14.0-1015.15~24.04.1

Affected versions

6.*

6.14.0-1003.3~24.04.3
6.14.0-1010.10~24.04.1
6.14.0-1011.11~24.04.1
6.14.0-1012.12~24.04.1
6.14.0-1013.13~24.04.1
6.14.0-1014.14~24.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-buildinfo-6.14.0-1015-realtime"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-cloud-tools-6.14.0-1015-realtime"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-headers-6.14.0-1015-realtime"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-image-unsigned-6.14.0-1015-realtime"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-modules-6.14.0-1015-realtime"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-modules-extra-6.14.0-1015-realtime"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-modules-iwlwifi-6.14.0-1015-realtime"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-realtime-6.14-cloud-tools-6.14.0-1015"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-realtime-6.14-headers-6.14.0-1015"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-realtime-6.14-tools-6.14.0-1015"
        },
        {
            "binary_version": "6.14.0-1015.15~24.04.1",
            "binary_name": "linux-tools-6.14.0-1015-realtime"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map

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