CVEvulnerability

CVE-2021-3939

7.8 HIGH Published 2021-11-17 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-11-17
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-590, CWE-763

Description

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.

Affected configurations

• canonical accountsservice (>= 0.6.55-0ubuntu12\~20.04 < 0.6.55-0ubuntu12\~20.05) • canonical accountsservice (>= 0.6.55-0ubuntu13 < 0.6.55-0ubuntu13.3) • canonical accountsservice (>= 0.6.55-0ubuntu14 < 0.6.55-0ubuntu14.1) • canonical ubuntu linux 20.04 • canonical ubuntu linux 21.04 • canonical ubuntu linux 21.10

Related

Weakness · CWE (2)

  • CWE-590 Free of Memory not on the Heap weakness
  • CWE-763 Release of Invalid Pointer or Reference weakness

References