A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-2843-1 linux security update
Debian DLA Debian DLA DLA-2941-1 linux-4.19 security update
Debian DSA Debian DSA DSA-5096-1 linux security update
EUVD EUVD EUVD-2021-7745 A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
Ubuntu USN Ubuntu USN USN-5208-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5209-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5210-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5218-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6221-1 Linux kernel vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-03T17:37:23.681Z

Reserved: 2020-12-17T00:00:00

Link: CVE-2021-20321

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-02-18T18:15:08.947

Modified: 2024-11-21T05:46:22.433

Link: CVE-2021-20321

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-10-11T09:00:00Z

Links: CVE-2021-20321 - Bugzilla

cve-icon OpenCVE Enrichment

No data.