Vulnerability Details CVE-2021-44731
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
Exploit prediction scoring system (EPSS) score
EPSS Score 0.023
EPSS Ranking 84.0%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 6.9
Products affected by CVE-2021-44731
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cpe:2.3:a:canonical:snapd:-
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cpe:2.3:a:canonical:snapd:0.2
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cpe:2.3:a:canonical:snapd:0.2.10
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cpe:2.3:a:canonical:snapd:0.2.11
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cpe:2.3:a:canonical:snapd:0.2.12
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cpe:2.3:a:canonical:snapd:0.2.13
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cpe:2.3:a:canonical:snapd:0.2.3
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cpe:2.3:a:canonical:snapd:0.2.4
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cpe:2.3:a:canonical:snapd:0.2.8
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cpe:2.3:a:canonical:snapd:0.2.9
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cpe:2.3:a:canonical:snapd:1.0.1
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cpe:2.3:a:canonical:snapd:1.0.10
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cpe:2.3:a:canonical:snapd:1.0.11
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cpe:2.3:a:canonical:snapd:1.0.12
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cpe:2.3:a:canonical:snapd:1.0.13
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cpe:2.3:a:canonical:snapd:1.0.14
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cpe:2.3:a:canonical:snapd:1.0.15
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cpe:2.3:a:canonical:snapd:1.0.16
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cpe:2.3:a:canonical:snapd:1.0.17
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cpe:2.3:a:canonical:snapd:1.0.2
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cpe:2.3:a:canonical:snapd:1.0.20
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cpe:2.3:a:canonical:snapd:1.0.21
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cpe:2.3:a:canonical:snapd:1.0.22
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cpe:2.3:a:canonical:snapd:1.0.23
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cpe:2.3:a:canonical:snapd:1.0.24
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cpe:2.3:a:canonical:snapd:1.0.25
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cpe:2.3:a:canonical:snapd:1.0.25.1
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cpe:2.3:a:canonical:snapd:1.0.26
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cpe:2.3:a:canonical:snapd:1.0.27
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cpe:2.3:a:canonical:snapd:1.0.28
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cpe:2.3:a:canonical:snapd:1.0.29
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cpe:2.3:a:canonical:snapd:1.0.3
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cpe:2.3:a:canonical:snapd:1.0.30
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cpe:2.3:a:canonical:snapd:1.0.31
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cpe:2.3:a:canonical:snapd:1.0.32
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cpe:2.3:a:canonical:snapd:1.0.33
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cpe:2.3:a:canonical:snapd:1.0.34
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cpe:2.3:a:canonical:snapd:1.0.35
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cpe:2.3:a:canonical:snapd:1.0.36
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cpe:2.3:a:canonical:snapd:1.0.37
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cpe:2.3:a:canonical:snapd:1.0.38
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cpe:2.3:a:canonical:snapd:1.0.39
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cpe:2.3:a:canonical:snapd:1.0.4
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cpe:2.3:a:canonical:snapd:1.0.40
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cpe:2.3:a:canonical:snapd:1.0.41
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cpe:2.3:a:canonical:snapd:1.0.42
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cpe:2.3:a:canonical:snapd:1.0.42.1
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cpe:2.3:a:canonical:snapd:1.0.43
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cpe:2.3:a:canonical:snapd:1.0.44
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cpe:2.3:a:canonical:snapd:1.0.5
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cpe:2.3:a:canonical:snapd:1.0.6
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cpe:2.3:a:canonical:snapd:1.0.8
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cpe:2.3:a:canonical:snapd:1.0.9
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cpe:2.3:a:canonical:snapd:1.9
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cpe:2.3:a:canonical:snapd:1.9.1
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cpe:2.3:a:canonical:snapd:1.9.2
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cpe:2.3:a:canonical:snapd:1.9.3
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cpe:2.3:a:canonical:snapd:1.9.4
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cpe:2.3:a:canonical:snapd:1.9.4.1
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cpe:2.3:a:canonical:snapd:2.0
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cpe:2.3:a:canonical:snapd:2.0.1
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cpe:2.3:a:canonical:snapd:2.0.10
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cpe:2.3:a:canonical:snapd:2.0.2
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cpe:2.3:a:canonical:snapd:2.0.3
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cpe:2.3:a:canonical:snapd:2.0.4
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cpe:2.3:a:canonical:snapd:2.0.5
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cpe:2.3:a:canonical:snapd:2.0.6
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cpe:2.3:a:canonical:snapd:2.0.7
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cpe:2.3:a:canonical:snapd:2.0.8
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cpe:2.3:a:canonical:snapd:2.0.8.1
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cpe:2.3:a:canonical:snapd:2.0.9
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cpe:2.3:a:canonical:snapd:2.11
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cpe:2.3:a:canonical:snapd:2.12
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cpe:2.3:a:canonical:snapd:2.13
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cpe:2.3:a:canonical:snapd:2.14
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cpe:2.3:a:canonical:snapd:2.14.1
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cpe:2.3:a:canonical:snapd:2.14.2.16.04
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cpe:2.3:a:canonical:snapd:2.15
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cpe:2.3:a:canonical:snapd:2.15.1
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cpe:2.3:a:canonical:snapd:2.15.2
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cpe:2.3:a:canonical:snapd:2.16
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cpe:2.3:a:canonical:snapd:2.17
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cpe:2.3:a:canonical:snapd:2.17.1
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cpe:2.3:a:canonical:snapd:2.18
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cpe:2.3:a:canonical:snapd:2.18.1
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cpe:2.3:a:canonical:snapd:2.19
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cpe:2.3:a:canonical:snapd:2.20
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cpe:2.3:a:canonical:snapd:2.20.1
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cpe:2.3:a:canonical:snapd:2.20.1.14.04
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cpe:2.3:a:canonical:snapd:2.21
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cpe:2.3:a:canonical:snapd:2.21.14.04.1
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cpe:2.3:a:canonical:snapd:2.22
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cpe:2.3:a:canonical:snapd:2.22.1
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cpe:2.3:a:canonical:snapd:2.22.2
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cpe:2.3:a:canonical:snapd:2.22.3
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cpe:2.3:a:canonical:snapd:2.22.4
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cpe:2.3:a:canonical:snapd:2.22.5
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cpe:2.3:a:canonical:snapd:2.22.6
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cpe:2.3:a:canonical:snapd:2.22.7
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cpe:2.3:a:canonical:snapd:2.23
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cpe:2.3:a:canonical:snapd:2.23.1
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cpe:2.3:a:canonical:snapd:2.23.2
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cpe:2.3:a:canonical:snapd:2.23.3
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cpe:2.3:a:canonical:snapd:2.23.4
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cpe:2.3:a:canonical:snapd:2.23.5
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cpe:2.3:a:canonical:snapd:2.23.6
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cpe:2.3:a:canonical:snapd:2.24
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cpe:2.3:a:canonical:snapd:2.25
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cpe:2.3:a:canonical:snapd:2.26
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cpe:2.3:a:canonical:snapd:2.26.1
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cpe:2.3:a:canonical:snapd:2.26.10
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cpe:2.3:a:canonical:snapd:2.26.13
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cpe:2.3:a:canonical:snapd:2.26.14
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cpe:2.3:a:canonical:snapd:2.26.2
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cpe:2.3:a:canonical:snapd:2.26.3
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cpe:2.3:a:canonical:snapd:2.26.4
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cpe:2.3:a:canonical:snapd:2.26.5
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cpe:2.3:a:canonical:snapd:2.26.6
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cpe:2.3:a:canonical:snapd:2.26.8
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cpe:2.3:a:canonical:snapd:2.26.9
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cpe:2.3:a:canonical:snapd:2.27
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cpe:2.3:a:canonical:snapd:2.27.1
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cpe:2.3:a:canonical:snapd:2.27.2
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cpe:2.3:a:canonical:snapd:2.27.3
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cpe:2.3:a:canonical:snapd:2.27.4
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cpe:2.3:a:canonical:snapd:2.27.5
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cpe:2.3:a:canonical:snapd:2.27.6
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cpe:2.3:a:canonical:snapd:2.28
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cpe:2.3:a:canonical:snapd:2.28.1
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cpe:2.3:a:canonical:snapd:2.28.2
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cpe:2.3:a:canonical:snapd:2.28.3
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cpe:2.3:a:canonical:snapd:2.28.4
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cpe:2.3:a:canonical:snapd:2.28.5
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cpe:2.3:a:canonical:snapd:2.29
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cpe:2.3:a:canonical:snapd:2.29.1
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cpe:2.3:a:canonical:snapd:2.29.2
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cpe:2.3:a:canonical:snapd:2.29.3
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cpe:2.3:a:canonical:snapd:2.29.3.1
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cpe:2.3:a:canonical:snapd:2.29.4
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cpe:2.3:a:canonical:snapd:2.29.4.1
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cpe:2.3:a:canonical:snapd:2.29.4.2
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cpe:2.3:a:canonical:snapd:2.30
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cpe:2.3:a:canonical:snapd:2.31
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cpe:2.3:a:canonical:snapd:2.31.1
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cpe:2.3:a:canonical:snapd:2.31.2
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cpe:2.3:a:canonical:snapd:2.32
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cpe:2.3:a:canonical:snapd:2.32.1
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cpe:2.3:a:canonical:snapd:2.32.2
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cpe:2.3:a:canonical:snapd:2.32.3
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cpe:2.3:a:canonical:snapd:2.32.3.1
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cpe:2.3:a:canonical:snapd:2.32.3.2
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cpe:2.3:a:canonical:snapd:2.32.4
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cpe:2.3:a:canonical:snapd:2.32.5
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cpe:2.3:a:canonical:snapd:2.32.6
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cpe:2.3:a:canonical:snapd:2.32.7
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cpe:2.3:a:canonical:snapd:2.32.8
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cpe:2.3:a:canonical:snapd:2.32.9
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cpe:2.3:a:canonical:snapd:2.33
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cpe:2.3:a:canonical:snapd:2.33.1
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cpe:2.3:a:canonical:snapd:2.34
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cpe:2.3:a:canonical:snapd:2.34.1
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cpe:2.3:a:canonical:snapd:2.34.2
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cpe:2.3:a:canonical:snapd:2.34.3
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cpe:2.3:a:canonical:snapd:2.35
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cpe:2.3:a:canonical:snapd:2.35.1
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cpe:2.3:a:canonical:snapd:2.35.2
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cpe:2.3:a:canonical:snapd:2.35.3
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cpe:2.3:a:canonical:snapd:2.35.4
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cpe:2.3:a:canonical:snapd:2.35.5
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cpe:2.3:a:canonical:snapd:2.36
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cpe:2.3:a:canonical:snapd:2.36.1
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cpe:2.3:a:canonical:snapd:2.36.2
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cpe:2.3:a:canonical:snapd:2.36.3
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cpe:2.3:a:canonical:snapd:2.37
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cpe:2.3:a:canonical:snapd:2.37.1
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cpe:2.3:a:canonical:snapd:2.37.2
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cpe:2.3:a:canonical:snapd:2.37.3
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cpe:2.3:a:canonical:snapd:2.37.4
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cpe:2.3:a:canonical:snapd:2.38
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cpe:2.3:a:canonical:snapd:2.39
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cpe:2.3:a:canonical:snapd:2.39.1
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cpe:2.3:a:canonical:snapd:2.39.2
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cpe:2.3:a:canonical:snapd:2.39.3
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cpe:2.3:a:canonical:snapd:2.40
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cpe:2.3:a:canonical:snapd:2.41
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cpe:2.3:a:canonical:snapd:2.42
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cpe:2.3:a:canonical:snapd:2.42.1
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cpe:2.3:a:canonical:snapd:2.42.2
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cpe:2.3:a:canonical:snapd:2.42.3
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cpe:2.3:a:canonical:snapd:2.42.4
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cpe:2.3:a:canonical:snapd:2.42.5
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cpe:2.3:a:canonical:snapd:2.43
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cpe:2.3:a:canonical:snapd:2.43.1
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cpe:2.3:a:canonical:snapd:2.43.2
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cpe:2.3:a:canonical:snapd:2.43.3
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cpe:2.3:a:canonical:snapd:2.44
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cpe:2.3:a:canonical:snapd:2.44.1
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cpe:2.3:a:canonical:snapd:2.44.2
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cpe:2.3:a:canonical:snapd:2.44.3
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cpe:2.3:a:canonical:snapd:2.44.4
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cpe:2.3:a:canonical:snapd:2.44.5
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cpe:2.3:a:canonical:snapd:2.45
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cpe:2.3:a:canonical:snapd:2.45.1
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cpe:2.3:a:canonical:snapd:2.45.2
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cpe:2.3:a:canonical:snapd:2.45.3
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cpe:2.3:a:canonical:snapd:2.45.3.1
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cpe:2.3:a:canonical:snapd:2.46
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cpe:2.3:a:canonical:snapd:2.46.1
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cpe:2.3:a:canonical:snapd:2.47
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cpe:2.3:a:canonical:snapd:2.47.1
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cpe:2.3:a:canonical:snapd:2.48
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cpe:2.3:a:canonical:snapd:2.48.1
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cpe:2.3:a:canonical:snapd:2.48.2
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cpe:2.3:a:canonical:snapd:2.48.3
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cpe:2.3:a:canonical:snapd:2.49
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cpe:2.3:a:canonical:snapd:2.49.1
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cpe:2.3:a:canonical:snapd:2.49.2
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cpe:2.3:a:canonical:snapd:2.50
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cpe:2.3:a:canonical:snapd:2.50.1
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cpe:2.3:a:canonical:snapd:2.51
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cpe:2.3:a:canonical:snapd:2.51.1
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cpe:2.3:a:canonical:snapd:2.51.2
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cpe:2.3:a:canonical:snapd:2.51.3
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cpe:2.3:a:canonical:snapd:2.51.4
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cpe:2.3:a:canonical:snapd:2.51.5
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cpe:2.3:a:canonical:snapd:2.51.6
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cpe:2.3:a:canonical:snapd:2.51.7
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cpe:2.3:a:canonical:snapd:2.52
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cpe:2.3:a:canonical:snapd:2.52.1
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cpe:2.3:a:canonical:snapd:2.53
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cpe:2.3:a:canonical:snapd:2.53.1
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cpe:2.3:a:canonical:snapd:2.53.2
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cpe:2.3:a:canonical:snapd:2.53.3
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cpe:2.3:a:canonical:snapd:2.53.4
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cpe:2.3:a:canonical:snapd:2.54
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cpe:2.3:a:canonical:snapd:2.54.1
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cpe:2.3:a:canonical:snapd:2.54.2
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cpe:2.3:o:canonical:ubuntu_linux:18.04
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cpe:2.3:o:canonical:ubuntu_linux:20.04
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cpe:2.3:o:canonical:ubuntu_linux:21.10
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:11.0
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cpe:2.3:o:fedoraproject:fedora:34
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cpe:2.3:o:fedoraproject:fedora:35