UBUNTU-CVE-2021-3939 (CVE-2021-3939)

Vulnerability from osv_ubuntu – Published: 2021-11-16 18:00 – Updated: 2026-04-22 07:39 – Source website
VLAI
Details

Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static storage, to be freed, in the user_change_language_authorized_cb function. This is reachable via the SetLanguage dbus function. This is fixed in versions 0.6.55-0ubuntu12~20.04.5, 0.6.55-0ubuntu13.3, 0.6.55-0ubuntu14.1.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
N/A (UNKNOWN)
high
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "0.6.55-0ubuntu12~20.04.5"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.55-0ubuntu12~20.04.5"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.55-0ubuntu12~20.04.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@0.6.55-0ubuntu12~20.04.5?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.55-0ubuntu12~20.04.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.55-0ubuntu10",
        "0.6.55-0ubuntu11",
        "0.6.55-0ubuntu12~20.04.1",
        "0.6.55-0ubuntu12~20.04.2",
        "0.6.55-0ubuntu12~20.04.4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "0.6.55-3ubuntu2"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.55-3ubuntu2"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.55-3ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@0.6.55-3ubuntu2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.55-3ubuntu2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.55-0ubuntu14",
        "0.6.55-3ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static storage, to be freed, in the user_change_language_authorized_cb function. This is reachable via the SetLanguage dbus function. This is fixed in versions 0.6.55-0ubuntu12~20.04.5, 0.6.55-0ubuntu13.3, 0.6.55-0ubuntu14.1.",
  "id": "UBUNTU-CVE-2021-3939",
  "modified": "2026-04-22T07:39:50Z",
  "published": "2021-11-16T18:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3939"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5149-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-3939"
    }
  ],
  "related": [
    "USN-5149-1"
  ],
  "schema_version": "1.7.0",
  "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": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "high",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-3939"
  ]
}



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