CVE-2021-20321

MEDIUM

4.7

Description

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.

CVE Details

CVSS v3.1 Score4.7

SeverityMEDIUM

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

Attack VectorLOCAL

ComplexityHIGH

Privileges RequiredLOW

User InteractionNONE

Published2/18/2022

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

debian:debian_linuxlinux:linux_kernelredhat:enterprise_linux

Weaknesses (CWE)

CWE-362CWE-362

References

https://bugzilla.redhat.com/show_bug.cgi?id=2013242(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html(secalert@redhat.com)

https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/(secalert@redhat.com)

https://www.debian.org/security/2022/dsa-5096(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2013242(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html(af854a3a-2127-422b-91ae-364da2661108)

https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/(af854a3a-2127-422b-91ae-364da2661108)

https://www.debian.org/security/2022/dsa-5096(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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