USN-7860-3

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:FIPS-updates:22.04:LTS / linux-aws-fips

Package

Name: linux-aws-fips
Purl: pkg:deb/ubuntu/linux-aws-fips@5.15.0-1096.103+fips1?arch=source&distro=fips-updates/jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.15.0-1096.103+fips1

Affected versions

5.*

5.15.0-1051.56+fips1

5.15.0-1052.57+fips1

5.15.0-1053.58+fips1

5.15.0-1055.60+fips1

5.15.0-1056.61+fips1

5.15.0-1057.63+fips1

5.15.0-1060.66+fips1

5.15.0-1061.67+fips1

5.15.0-1062.68+fips1

5.15.0-1063.69+fips1

5.15.0-1064.70+fips1

5.15.0-1065.71+fips1

5.15.0-1066.72+fips1

5.15.0-1067.73+fips1

5.15.0-1068.74+fips1

5.15.0-1069.75+fips1

5.15.0-1070.76+fips1

5.15.0-1071.77+fips1

5.15.0-1072.78+fips1

5.15.0-1073.79+fips1

5.15.0-1076.83+fips1

5.15.0-1077.84+fips1

5.15.0-1078.85+fips1

5.15.0-1079.86+fips1

5.15.0-1080.87+fips1

5.15.0-1081.88+fips1

5.15.0-1082.89+fips1

5.15.0-1083.90+fips1

5.15.0-1084.91+fips1

5.15.0-1085.92+fips1

5.15.0-1086.93+fips1

5.15.0-1087.94+fips1

5.15.0-1088.95+fips1

5.15.0-1089.96+fips1

5.15.0-1090.97+fips1

5.15.0-1091.98+fips1

5.15.0-1092.99+fips1

5.15.0-1093.100+fips1

5.15.0-1095.102+fips1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "linux-aws-fips-cloud-tools-5.15.0-1096",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-aws-fips-headers-5.15.0-1096",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-aws-fips-tools-5.15.0-1096",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-buildinfo-5.15.0-1096-aws-fips",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-cloud-tools-5.15.0-1096-aws-fips",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-headers-5.15.0-1096-aws-fips",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-image-unsigned-5.15.0-1096-aws-fips",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-image-unsigned-hmac-5.15.0-1096-aws-fips",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-modules-5.15.0-1096-aws-fips",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-modules-extra-5.15.0-1096-aws-fips",
            "binary_version": "5.15.0-1096.103+fips1"
        },
        {
            "binary_name": "linux-tools-5.15.0-1096-aws-fips",
            "binary_version": "5.15.0-1096.103+fips1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ],
            "id": "CVE-2025-40300"
        }
    ],
    "ecosystem": "Ubuntu:Pro:FIPS-updates:22.04:LTS"
}

Ubuntu:Pro:FIPS-updates:22.04:LTS / linux-fips

Package

Name: linux-fips
Purl: pkg:deb/ubuntu/linux-fips@5.15.0-161.171+fips1?arch=source&distro=fips-updates/jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.15.0-161.171+fips1

Affected versions

5.*

5.15.0-73.80+fips1

5.15.0-92.102+fips1

5.15.0-94.104+fips1

5.15.0-97.107+fips1

5.15.0-100.110+fips1

5.15.0-101.111+fips1

5.15.0-102.112+fips1

5.15.0-105.115+fips1

5.15.0-106.116+fips1

5.15.0-107.117+fips1

5.15.0-111.121+fips1

5.15.0-113.123+fips1

5.15.0-115.125+fips1

5.15.0-117.127+fips1

5.15.0-118.128+fips1

5.15.0-119.129+fips1

5.15.0-121.131+fips1

5.15.0-122.132+fips1

5.15.0-124.134+fips1

5.15.0-125.135+fips1

5.15.0-127.137+fips1

5.15.0-128.138+fips1

5.15.0-130.140+fips1

5.15.0-131.141+fips1

5.15.0-133.144+fips1

5.15.0-134.145+fips1

5.15.0-135.146+fips1

5.15.0-136.147+fips1

5.15.0-138.148+fips1

5.15.0-139.149+fips1

5.15.0-140.150+fips1

5.15.0-141.151+fips1

5.15.0-142.152+fips1

5.15.0-143.153+fips1

5.15.0-144.157+fips1

5.15.0-145.158+fips1

5.15.0-152.162+fips1

5.15.0-153.163+fips1

5.15.0-156.166+fips1

5.15.0-157.167+fips1

5.15.0-160.170+fips1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "linux-buildinfo-5.15.0-161-fips",
            "binary_version": "5.15.0-161.171+fips1"
        },
        {
            "binary_name": "linux-fips-headers-5.15.0-161",
            "binary_version": "5.15.0-161.171+fips1"
        },
        {
            "binary_name": "linux-fips-tools-5.15.0-161",
            "binary_version": "5.15.0-161.171+fips1"
        },
        {
            "binary_name": "linux-headers-5.15.0-161-fips",
            "binary_version": "5.15.0-161.171+fips1"
        },
        {
            "binary_name": "linux-image-unsigned-5.15.0-161-fips",
            "binary_version": "5.15.0-161.171+fips1"
        },
        {
            "binary_name": "linux-image-unsigned-hmac-5.15.0-161-fips",
            "binary_version": "5.15.0-161.171+fips1"
        },
        {
            "binary_name": "linux-modules-5.15.0-161-fips",
            "binary_version": "5.15.0-161.171+fips1"
        },
        {
            "binary_name": "linux-modules-extra-5.15.0-161-fips",
            "binary_version": "5.15.0-161.171+fips1"
        },
        {
            "binary_name": "linux-modules-iwlwifi-5.15.0-161-fips",
            "binary_version": "5.15.0-161.171+fips1"
        },
        {
            "binary_name": "linux-tools-5.15.0-161-fips",
            "binary_version": "5.15.0-161.171+fips1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ],
            "id": "CVE-2025-40300"
        }
    ],
    "ecosystem": "Ubuntu:Pro:FIPS-updates:22.04:LTS"
}

Ubuntu:Pro:FIPS-updates:22.04:LTS / linux-gcp-fips

Package

Name: linux-gcp-fips
Purl: pkg:deb/ubuntu/linux-gcp-fips@5.15.0-1096.105+fips1?arch=source&distro=fips-updates/jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.15.0-1096.105+fips1

Affected versions

5.*

5.15.0-1048.56+fips1

5.15.0-1055.63+fips2

5.15.0-1058.66+fips1

5.15.0-1059.67+fips1

5.15.0-1060.68+fips1

5.15.0-1062.70+fips1

5.15.0-1063.71+fips1

5.15.0-1064.72+fips1

5.15.0-1065.73+fips1

5.15.0-1066.74+fips1

5.15.0-1067.75+fips1

5.15.0-1068.76+fips1

5.15.0-1069.77+fips1

5.15.0-1070.78+fips1

5.15.0-1071.79+fips1

5.15.0-1072.80+fips1

5.15.0-1073.81+fips1

5.15.0-1074.83+fips1

5.15.0-1075.84+fips1

5.15.0-1077.86+fips1

5.15.0-1078.87+fips1

5.15.0-1079.88+fips1

5.15.0-1080.89+fips1

5.15.0-1081.90+fips1

5.15.0-1082.91+fips1

5.15.0-1083.92+fips1

5.15.0-1084.93+fips1

5.15.0-1085.94+fips1

5.15.0-1086.95+fips1

5.15.0-1087.96+fips1

5.15.0-1088.97+fips1

5.15.0-1090.99+fips1

5.15.0-1091.100+fips1

5.15.0-1092.101+fips1

5.15.0-1093.102+fips1

5.15.0-1095.104+fips1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "linux-buildinfo-5.15.0-1096-gcp-fips",
            "binary_version": "5.15.0-1096.105+fips1"
        },
        {
            "binary_name": "linux-gcp-fips-headers-5.15.0-1096",
            "binary_version": "5.15.0-1096.105+fips1"
        },
        {
            "binary_name": "linux-gcp-fips-tools-5.15.0-1096",
            "binary_version": "5.15.0-1096.105+fips1"
        },
        {
            "binary_name": "linux-headers-5.15.0-1096-gcp-fips",
            "binary_version": "5.15.0-1096.105+fips1"
        },
        {
            "binary_name": "linux-image-unsigned-5.15.0-1096-gcp-fips",
            "binary_version": "5.15.0-1096.105+fips1"
        },
        {
            "binary_name": "linux-image-unsigned-hmac-5.15.0-1096-gcp-fips",
            "binary_version": "5.15.0-1096.105+fips1"
        },
        {
            "binary_name": "linux-modules-5.15.0-1096-gcp-fips",
            "binary_version": "5.15.0-1096.105+fips1"
        },
        {
            "binary_name": "linux-modules-extra-5.15.0-1096-gcp-fips",
            "binary_version": "5.15.0-1096.105+fips1"
        },
        {
            "binary_name": "linux-tools-5.15.0-1096-gcp-fips",
            "binary_version": "5.15.0-1096.105+fips1"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ],
            "id": "CVE-2025-40300"
        }
    ],
    "ecosystem": "Ubuntu:Pro:FIPS-updates:22.04:LTS"
}