CVE-2021-44731
mediumpriority · track · 41EPSS 0.010 · 61 %ileexploit · PoCEURUUSEPSS · scored 2026-10-27
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
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–8.8
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
affected products (18)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (40)
External citations — patches, advisories, analysis.
- http://seclists.org/fulldisclosure/2022/Dec/4cnnvd
- http://www.openwall.com/lists/oss-security/2022/02/18/2cnnvd
- http://www.openwall.com/lists/oss-security/2022/02/23/1cnnvd
- http://www.openwall.com/lists/oss-security/2022/02/23/2cnnvd
- http://www.openwall.com/lists/oss-security/2022/11/30/2cnnvd
- https://cxsecurity.com/cveshow/CVE-2021-44731/cnnvd
- https://cxsecurity.com/issue/WLB-2022120021cnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/cnnvd
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