UBUNTU-CVE-2021-3939

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Source

https://ubuntu.com/security/CVE-2021-3939

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3939.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3939

Upstream

CVE-2021-3939

Downstream

USN-5149-1

Related

USN-5149-1

Published

2021-11-16T18:00:00Z

Modified

2026-04-22T13:00:01Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Ubuntu - high

Summary

[none]

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.

References

Affected packages

Ubuntu:20.04:LTS / accountsservice

Package

Name: accountsservice
Purl: pkg:deb/ubuntu/accountsservice@0.6.55-0ubuntu12~20.04.5?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

0.6.55-0ubuntu12~20.04.5

Affected versions

0.*

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": "0.6.55-0ubuntu12~20.04.5"
        },
        {
            "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"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3939.json"

Ubuntu:22.04:LTS / accountsservice