CVE-2021-44731

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.95% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 61.0% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-02-17 00:00Z4 YR AGO

Last updated

2024-08-04 04:32Z2 YR AGO

Reserved

2021-12-08

Assigning CNA

canonical

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weaknesses

• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.1

Document digest

f3c285c9a99c0926600d0689bcfa07e67ee839372212e5f87236c7a309bd48ab

• ubuntu.comhttps://ubuntu.com/security/notices/USN-5292-1
• www.openwall.com[oss-security] 20220218 CVE-2021-4120: Insufficient validation of snap content interface and layout pathshttp://www.openwall.com/lists/oss-security/2022/02/18/2mailing-list
• lists.fedoraproject.orgFEDORA-2022-82bea71e5ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-5df8b52ba4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/vendor-advisory
• www.debian.orgDSA-5080https://www.debian.org/security/2022/dsa-5080vendor-advisory
• www.openwall.com[oss-security] 20220223 Re: CVE-2021-44731: Race condition in snap-confine's setup_private_mount()http://www.openwall.com/lists/oss-security/2022/02/23/1mailing-list
• www.openwall.com[oss-security] 20220223 Re: CVE-2021-44731: Race condition in snap-confine's setup_private_mount()http://www.openwall.com/lists/oss-security/2022/02/23/2mailing-list
• www.openwall.com[oss-security] 20221130 Race condition in snap-confine's must_mkdir_and_open_with_perms() (CVE-2022-3328)http://www.openwall.com/lists/oss-security/2022/11/30/2mailing-list
• seclists.org20221208 Race condition in snap-confine's must_mkdir_and_open_with_perms() (CVE-2022-3328)http://seclists.org/fulldisclosure/2022/Dec/4mailing-list
• packetstormsecurity.comhttp://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html