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nvd[email protected]NVD:CVE-2021-20321
HistoryFeb 18, 2022 - 6:15 p.m.

CVE-2021-20321

2022-02-1818:15:08
CWE-362
web.nvd.nist.gov
1

CVSS2

4.7

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:N/I:N/A:C

CVSS3

4.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

5.1%

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.

Affected configurations

NVD
Node
linuxlinux_kernelRange<5.15
OR
linuxlinux_kernelMatch5.15-
OR
linuxlinux_kernelMatch5.15rc1
OR
linuxlinux_kernelMatch5.15rc2
OR
linuxlinux_kernelMatch5.15rc3
OR
linuxlinux_kernelMatch5.15rc4
Node
redhatenterprise_linuxMatch7.0
OR
redhatenterprise_linuxMatch8.0
Node
debiandebian_linuxMatch9.0
OR
debiandebian_linuxMatch10.0

CVSS2

4.7

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:N/I:N/A:C

CVSS3

4.7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

5.1%