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USN-8226-2 (UBUNTU-CVE-2026-31431)

Vulnerability from osv_ubuntu – Published: 2026-04-30 16:19 – Updated: 2026-06-25 10:47 – Source website
VLAI
Summary
kmod update
Details

USN-8226-1 added a mitigation to kmod to disable loading the algif_aead module. This update adds the same mitigation to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that the Linux kernel algif_aead module contained a logic flaw allowing a local attacker to escalate privileges to root. This update to the kmod package disables loading the algif_aead module as a measure to mitigate the issue until kernel updates are made available.

See the following URL for more information https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "kmod",
            "binary_version": "15-0ubuntu7+esm1"
          },
          {
            "binary_name": "libkmod2",
            "binary_version": "15-0ubuntu7+esm1"
          },
          {
            "binary_name": "module-init-tools",
            "binary_version": "15-0ubuntu7+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "kmod",
        "purl": "pkg:deb/ubuntu/kmod@15-0ubuntu7+esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "15-0ubuntu7+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9-3ubuntu1",
        "15-0ubuntu2",
        "15-0ubuntu5",
        "15-0ubuntu6",
        "15-0ubuntu7"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "kmod",
            "binary_version": "22-1ubuntu5.2+esm1"
          },
          {
            "binary_name": "libkmod2",
            "binary_version": "22-1ubuntu5.2+esm1"
          },
          {
            "binary_name": "module-init-tools",
            "binary_version": "22-1ubuntu5.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "kmod",
        "purl": "pkg:deb/ubuntu/kmod@22-1ubuntu5.2+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "22-1ubuntu5.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "21-1ubuntu1",
        "22-1ubuntu1",
        "22-1ubuntu3",
        "22-1ubuntu4",
        "22-1ubuntu5",
        "22-1ubuntu5.1",
        "22-1ubuntu5.2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "kmod",
            "binary_version": "24-1ubuntu3.5+esm1"
          },
          {
            "binary_name": "libkmod2",
            "binary_version": "24-1ubuntu3.5+esm1"
          },
          {
            "binary_name": "module-init-tools",
            "binary_version": "24-1ubuntu3.5+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "kmod",
        "purl": "pkg:deb/ubuntu/kmod@24-1ubuntu3.5+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "24-1ubuntu3.5+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "24-1ubuntu2",
        "24-1ubuntu3",
        "24-1ubuntu3.1",
        "24-1ubuntu3.2",
        "24-1ubuntu3.3",
        "24-1ubuntu3.4",
        "24-1ubuntu3.5"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "kmod",
            "binary_version": "27-1ubuntu2.1+esm1"
          },
          {
            "binary_name": "libkmod2",
            "binary_version": "27-1ubuntu2.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "kmod",
        "purl": "pkg:deb/ubuntu/kmod@27-1ubuntu2.1+esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "27-1ubuntu2.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "26-1ubuntu1",
        "26-3ubuntu1",
        "26+20191223-1ubuntu1",
        "27-1ubuntu1",
        "27-1ubuntu2",
        "27-1ubuntu2.1"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-8226-1 added a mitigation to kmod to disable loading the algif_aead\nmodule. This update adds the same mitigation to Ubuntu 14.04 LTS,\nUbuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.\n\nOriginal advisory details:\n\nIt was discovered that the Linux kernel algif_aead module contained a logic\nflaw allowing a local attacker to escalate privileges to root. This update\nto the kmod package disables loading the algif_aead module as a measure to\nmitigate the issue until kernel updates are made available.\n\nSee the following URL for more information\nhttps://ubuntu.com/blog/copy-fail-vulnerability-fixes-available\n",
  "id": "USN-8226-2",
  "modified": "2026-06-25T10:47:38Z",
  "published": "2026-04-30T16:19:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8226-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-31431"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "kmod update",
  "upstream": [
    "UBUNTU-CVE-2026-31431"
  ]
}



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