CVEvulnerability

CVE-2021-44731

7.8 HIGH Published 2022-02-17 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-02-17
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:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.9 MEDIUM — AV:L/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-362

Description

A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Affected configurations

• canonical snapd (<= 2.54.2) • canonical ubuntu linux 18.04 • canonical ubuntu linux 20.04 • canonical ubuntu linux 21.10 • fedoraproject fedora 34 • fedoraproject fedora 35 • debian debian linux 10.0 • debian debian linux 11.0

Related

Weakness · CWE (1)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness

References