VULNERABILITY INTELLIGENCE
CVE-2021-44731
CVSS score7.8 HIGH
EPSS probability0.95%
CISA KEVNot currently listed
Published2022-02-17
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
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
Weakness classification
- security@ubuntu.com: CWE-362
- nvd@nist.gov: CWE-362
Primary references
- security@ubuntu.com — Exploit, Third Party Advisory, VDB Entry
- security@ubuntu.com — Exploit, Mailing List, Third Party Advisory
- security@ubuntu.com — Mailing List, Third Party Advisory
- security@ubuntu.com — Exploit, Mailing List, Third Party Advisory
- security@ubuntu.com — Mailing List, Third Party Advisory
- security@ubuntu.com — Exploit, Mailing List, Third Party Advisory
- security@ubuntu.com
- security@ubuntu.com
- security@ubuntu.com — Patch, Vendor Advisory
- security@ubuntu.com — Issue Tracking, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Exploit, Mailing List, Third Party Advisory