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CVE-2021-44731

Published: 17 February 2022

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

Priority

High

CVSS 3 base score: 7.8

Status

Package Release Status
snapd
Launchpad, Ubuntu, Debian
bionic
Released (2.54.3+18.04)
focal
Released (2.54.3+20.04)
hirsute Ignored
(reached end-of-life)
impish
Released (2.54.3+21.10.1)
trusty
Released (2.54.3+14.04~esm1)
upstream
Released (2.54.3)
xenial
Released (2.54.3+16.04~esm2)