USN-7906-2

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

x86 architecture;
Cryptographic API;
Android drivers;
TTY drivers;
F2FS file system;
9P file system network protocol; (CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028, CVE-2025-40108, CVE-2025-40109)

References

Affected packages

Ubuntu:25.10 / linux-gcp

Package

Name: linux-gcp
Purl: pkg:deb/ubuntu/linux-gcp?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

6.17.0-1004.4

Affected versions

6.*

6.14.0-1006.6

6.14.0-1009.9+25.10.1

6.16.0-1001.1

6.17.0-1001.1

6.17.0-1002.2

6.17.0-1003.3

Ecosystem specific

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "linux-buildinfo-6.17.0-1004-gcp",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-buildinfo-6.17.0-1004-gcp-64k",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-gcp-headers-6.17.0-1004",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-gcp-tools-6.17.0-1004",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-headers-6.17.0-1004-gcp",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-headers-6.17.0-1004-gcp-64k",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-image-unsigned-6.17.0-1004-gcp",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-image-unsigned-6.17.0-1004-gcp-64k",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-modules-6.17.0-1004-gcp",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-modules-6.17.0-1004-gcp-64k",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-tools-6.17.0-1004-gcp",
            "binary_version":  "6.17.0-1004.4"
        },
        {
            "binary_name":  "linux-tools-6.17.0-1004-gcp-64k",
            "binary_version":  "6.17.0-1004.4"
        }
    ]
}

Database specific

cves_map

{
    "cves":  [
        {
            "id":  "CVE-2025-40025",
            "severity":  [
                {
                    "score":  "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                    "type":  "CVSS_V4"
                },
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "high",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2025-40026",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2025-40027",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "low",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2025-40028",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2025-40108",
            "severity":  [
                {
                    "score":  "low",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2025-40109",
            "severity":  [
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:25.10"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7906-2.json"