CVE-2021-20321

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.
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

History

21 Nov 2024, 05:46

Type Values Removed Values Added
References () https://bugzilla.redhat.com/show_bug.cgi?id=2013242 - Issue Tracking, Third Party Advisory () https://bugzilla.redhat.com/show_bug.cgi?id=2013242 - Issue Tracking, Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html - Mailing List, Third Party Advisory () https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html - Mailing List, Third Party Advisory
References () https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/ - () https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/ -
References () https://www.debian.org/security/2022/dsa-5096 - Third Party Advisory () https://www.debian.org/security/2022/dsa-5096 - Third Party Advisory

07 Nov 2023, 03:29

Type Values Removed Values Added
References
  • {'url': 'https://lore.kernel.org/all/20211011134508.748956131@linuxfoundation.org/', 'name': 'https://lore.kernel.org/all/20211011134508.748956131@linuxfoundation.org/', 'tags': ['Patch', 'Vendor Advisory'], 'refsource': 'MISC'}
  • () https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/ -

Information

Published : 2022-02-18 18:15

Updated : 2024-11-21 05:46


NVD link : CVE-2021-20321

Mitre link : CVE-2021-20321

CVE.ORG link : CVE-2021-20321


JSON object : View

Products Affected

debian

  • debian_linux

linux

  • linux_kernel

redhat

  • enterprise_linux
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')