usn-8496-3
Vulnerability from osv_ubuntu
Published
2026-07-13 12:33
Modified
2026-07-13 12:33
Summary
cifs-utils vulnerability
Details

USN-8496-1 fixed vulnerabilities in cifs-utils. The update caused a regression and was backed out in USN-8496-2. This update reintroduces the security fix, along with a fix for the regression.

Original advisory details:

It was discovered that cifs-utils incorrectly dropped root privileges before looking up user information. A local attacker could possibly use this issue to execute arbitrary code as the root user.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-12505",
              "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cifs-utils",
            "binary_version": "2:6.14-1ubuntu0.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "cifs-utils",
        "purl": "pkg:deb/ubuntu/cifs-utils@2:6.14-1ubuntu0.6?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:6.14-1ubuntu0.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:6.11-3.1",
        "2:6.14-1",
        "2:6.14-1build1",
        "2:6.14-1ubuntu0.1",
        "2:6.14-1ubuntu0.2",
        "2:6.14-1ubuntu0.3",
        "2:6.14-1ubuntu0.4",
        "2:6.14-1ubuntu0.5"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-12505",
              "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cifs-utils",
            "binary_version": "2:7.0-2ubuntu0.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "cifs-utils",
        "purl": "pkg:deb/ubuntu/cifs-utils@2:7.0-2ubuntu0.5?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:7.0-2ubuntu0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:7.0-2",
        "2:7.0-2build1",
        "2:7.0-2ubuntu0.1",
        "2:7.0-2ubuntu0.2",
        "2:7.0-2ubuntu0.3",
        "2:7.0-2ubuntu0.4"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-12505",
              "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cifs-utils",
            "binary_version": "2:7.4-1ubuntu0.26.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "cifs-utils",
        "purl": "pkg:deb/ubuntu/cifs-utils@2:7.4-1ubuntu0.26.04.3?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:7.4-1ubuntu0.26.04.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:7.4-1",
        "2:7.4-1build1",
        "2:7.4-1ubuntu0.26.04.1",
        "2:7.4-1ubuntu0.26.04.2"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-8496-1 fixed vulnerabilities in cifs-utils. The update caused a\nregression and was backed out in USN-8496-2. This update reintroduces the\nsecurity fix, along with a fix for the regression.\n\nOriginal advisory details:\n\n It was discovered that cifs-utils incorrectly dropped root privileges\n before looking up user information. A local attacker could possibly use\n this issue to execute arbitrary code as the root user.",
  "id": "USN-8496-3",
  "modified": "2026-07-13T12:33:26Z",
  "published": "2026-07-13T12:33:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8496-3"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-12505"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "cifs-utils vulnerability",
  "upstream": [
    "UBUNTU-CVE-2026-12505"
  ]
}



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