usn-8015-2
Vulnerability from osv_ubuntu
Published
2026-02-04 20:52
Modified
2026-06-03 10:46
Summary
linux-realtime, linux-realtime-6.8, linux-raspi-realtime vulnerabilities
Details

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: - Cryptographic API; - SMB network file system; - io_uring subsystem; (CVE-2025-38561, CVE-2025-39698, CVE-2025-40019)


{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-38561",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-39698",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-40019",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:Realtime:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-cloud-tools-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-headers-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-image-unsigned-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-modules-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-modules-extra-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-modules-iwlwifi-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-realtime-6.8-cloud-tools-6.8.1-1040",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-realtime-6.8-headers-6.8.1-1040",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-realtime-6.8-tools-6.8.1-1040",
            "binary_version": "6.8.1-1040.41~22.04.1"
          },
          {
            "binary_name": "linux-tools-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41~22.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:Realtime:22.04:LTS",
        "name": "linux-realtime-6.8",
        "purl": "pkg:deb/ubuntu/linux-realtime-6.8@6.8.1-1040.41~22.04.1?arch=source\u0026distro=realtime/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.8.1-1040.41~22.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.8.1-1004.4~22.04.1",
        "6.8.1-1005.5~22.04.2",
        "6.8.1-1006.6~22.04.1",
        "6.8.1-1007.7~22.04.1",
        "6.8.1-1008.8~22.04.1",
        "6.8.1-1009.9~22.04.1",
        "6.8.1-1010.10~22.04.1",
        "6.8.1-1011.11~22.04.1",
        "6.8.1-1012.12~22.04.1",
        "6.8.1-1013.14~22.04.1",
        "6.8.1-1014.15~22.04.1",
        "6.8.1-1015.16~22.04.1",
        "6.8.1-1016.17~22.04.1",
        "6.8.1-1017.18~22.04.1",
        "6.8.1-1018.19~22.04.1",
        "6.8.1-1019.20~22.04.1",
        "6.8.1-1020.21~22.04.1",
        "6.8.1-1021.22~22.04.1",
        "6.8.1-1022.23~22.04.1",
        "6.8.1-1023.24~22.04.1",
        "6.8.1-1024.25~22.04.1",
        "6.8.1-1025.26~22.04.1",
        "6.8.1-1026.27~22.04.1",
        "6.8.1-1030.31~22.04.1",
        "6.8.1-1031.32~22.04.1",
        "6.8.1-1034.35~22.04.1",
        "6.8.1-1035.36~22.04.1",
        "6.8.1-1036.37~22.04.1",
        "6.8.1-1037.38~22.04.1",
        "6.8.1-1038.39~22.04.1",
        "6.8.1-1039.40~22.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-38561",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-39698",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-40019",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:Realtime:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-6.8.0-2036-raspi-realtime",
            "binary_version": "6.8.0-2036.37"
          },
          {
            "binary_name": "linux-headers-6.8.0-2036-raspi-realtime",
            "binary_version": "6.8.0-2036.37"
          },
          {
            "binary_name": "linux-image-6.8.0-2036-raspi-realtime",
            "binary_version": "6.8.0-2036.37"
          },
          {
            "binary_name": "linux-modules-6.8.0-2036-raspi-realtime",
            "binary_version": "6.8.0-2036.37"
          },
          {
            "binary_name": "linux-raspi-realtime-headers-6.8.0-2036",
            "binary_version": "6.8.0-2036.37"
          },
          {
            "binary_name": "linux-raspi-realtime-tools-6.8.0-2036",
            "binary_version": "6.8.0-2036.37"
          },
          {
            "binary_name": "linux-tools-6.8.0-2036-raspi-realtime",
            "binary_version": "6.8.0-2036.37"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:Realtime:24.04:LTS",
        "name": "linux-raspi-realtime",
        "purl": "pkg:deb/ubuntu/linux-raspi-realtime@6.8.0-2036.37?arch=source\u0026distro=realtime/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.8.0-2036.37"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.7.0-2001.1",
        "6.8.0-2001.1",
        "6.8.0-2002.2",
        "6.8.0-2004.4",
        "6.8.0-2005.5",
        "6.8.0-2006.6",
        "6.8.0-2007.7",
        "6.8.0-2008.8",
        "6.8.0-2009.9",
        "6.8.0-2010.10",
        "6.8.0-2011.11",
        "6.8.0-2012.12",
        "6.8.0-2013.14",
        "6.8.0-2014.15",
        "6.8.0-2015.16",
        "6.8.0-2016.17",
        "6.8.0-2017.18",
        "6.8.0-2018.19",
        "6.8.0-2019.20",
        "6.8.0-2022.23",
        "6.8.0-2023.24",
        "6.8.0-2024.25",
        "6.8.0-2025.26",
        "6.8.0-2026.27",
        "6.8.0-2028.29",
        "6.8.0-2029.30",
        "6.8.0-2030.31",
        "6.8.0-2031.32",
        "6.8.0-2032.33",
        "6.8.0-2033.34",
        "6.8.0-2034.35",
        "6.8.0-2035.36"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-38561",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-39698",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-40019",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:Realtime:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-cloud-tools-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-headers-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-image-unsigned-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-modules-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-modules-extra-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-modules-iwlwifi-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-realtime-cloud-tools-6.8.1-1040",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-realtime-headers-6.8.1-1040",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-realtime-tools-6.8.1-1040",
            "binary_version": "6.8.1-1040.41"
          },
          {
            "binary_name": "linux-tools-6.8.1-1040-realtime",
            "binary_version": "6.8.1-1040.41"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:Realtime:24.04:LTS",
        "name": "linux-realtime",
        "purl": "pkg:deb/ubuntu/linux-realtime@6.8.1-1040.41?arch=source\u0026distro=realtime/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.8.1-1040.41"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.8.0-1008.19",
        "6.8.1-1001.1",
        "6.8.1-1002.2",
        "6.8.1-1003.3",
        "6.8.1-1004.4",
        "6.8.1-1005.5",
        "6.8.1-1006.6",
        "6.8.1-1007.7",
        "6.8.1-1008.8",
        "6.8.1-1009.9",
        "6.8.1-1010.10",
        "6.8.1-1011.11",
        "6.8.1-1012.12",
        "6.8.1-1013.14",
        "6.8.1-1014.15",
        "6.8.1-1015.16",
        "6.8.1-1016.17",
        "6.8.1-1017.18",
        "6.8.1-1018.19",
        "6.8.1-1019.20",
        "6.8.1-1020.21",
        "6.8.1-1021.22",
        "6.8.1-1022.23",
        "6.8.1-1023.24",
        "6.8.1-1024.25",
        "6.8.1-1025.26",
        "6.8.1-1026.27",
        "6.8.1-1030.31",
        "6.8.1-1031.32",
        "6.8.1-1033.34",
        "6.8.1-1034.35",
        "6.8.1-1035.36",
        "6.8.1-1036.37",
        "6.8.1-1037.38",
        "6.8.1-1038.39",
        "6.8.1-1039.40"
      ]
    }
  ],
  "aliases": [],
  "details": "Several security issues were discovered in the Linux kernel.\nAn attacker could possibly use these to compromise the system.\nThis update corrects flaws in the following subsystems:\n  - Cryptographic API;\n  - SMB network file system;\n  - io_uring subsystem;\n(CVE-2025-38561, CVE-2025-39698, CVE-2025-40019)\n",
  "id": "USN-8015-2",
  "modified": "2026-06-03T10:46:17Z",
  "published": "2026-02-04T20:52:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8015-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-38561"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-39698"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-40019"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-realtime, linux-realtime-6.8, linux-raspi-realtime vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2025-38561",
    "UBUNTU-CVE-2025-39698",
    "UBUNTU-CVE-2025-40019"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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