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

CVE-2021-20321

2022-02-1818:15:00
CWE-362
[email protected]
web.nvd.nist.gov
182
cve-2021-20321
linux kernel
overlayfs
race condition
file object
security issue
nvd

4.7 Medium

CVSS3

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

5.2 Medium

AI Score

Confidence

High

4.7 Medium

CVSS2

Access Vector

LOCAL

Access 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

0.0004 Low

EPSS

Percentile

5.3%

JSON

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.

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Related

prion 1
veracode 1
cbl_mariner 1
osv 12
oraclelinux 2
nessus 45
redhat 7
redhatcve 1
cnvd 1
debiancve 1
rocky 2
almalinux 1
ubuntucve 1
openvas 36
mageia 2
cloudfoundry 3
ubuntu 6
amazon 1
photon 1
suse 3
debian 3
slackware 1
ibm 1
prion
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2022-02-18 18:15:00
veracode
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Denial Of Service (DoS)
2021-12-23 00:41:04
cbl_mariner
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CVE-2021-20321 affecting package kernel 5.10.189.1-1
2022-03-10 23:47:45
osv
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Moderate: kernel-rt security and bug fix update
2021-12-21 09:12:29
Moderate: kernel security and bug fix update
2021-12-21 09:07:34
Moderate: kernel security and bug fix update
2021-12-21 09:07:34
oraclelinux
oraclelinux
kernel security and bug fix update
2021-12-22 00:00:00
Unbreakable Enterprise kernel security update
2022-02-01 00:00:00
nessus
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CentOS 8 : kernel (CESA-2021:5227)
2021-12-31 00:00:00
RHEL 8 : kernel-rt (RHSA-2021:5241)
2021-12-22 00:00:00
Rocky Linux 8 : kernel-rt (RLSA-2021:5241)
2023-11-06 00:00:00
redhat
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(RHSA-2021:5227) Moderate: kernel security and bug fix update
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(RHSA-2021:5241) Moderate: kernel-rt security and bug fix update
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(RHSA-2022:0043) Low: Red Hat OpenShift Enterprise Logging security and bug fix update (5.2.5)
2022-01-10 07:11:54
redhatcve
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2021-10-13 08:25:06
cnvd
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Linux kernel competition condition issue vulnerability (CNVD-2022-21490)
2021-12-21 00:00:00
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rocky
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kernel-rt security and bug fix update
2021-12-21 09:12:29
kernel security and bug fix update
2021-12-21 09:07:34
almalinux
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Moderate: kernel security and bug fix update
2021-12-21 09:07:34
ubuntucve
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CVE-2021-20321
2021-10-18 00:00:00
openvas
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Mageia: Security Advisory (MGASA-2021-0490)
2022-01-28 00:00:00
Mageia: Security Advisory (MGASA-2021-0489)
2022-01-28 00:00:00
Ubuntu: Security Advisory (USN-5209-1)
2022-01-07 00:00:00
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Updated kernel-linus packages fix security vulnerabilities
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Updated kernel packages fix security vulnerabilities
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cloudfoundry
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USN-5209-1: Linux kernel vulnerabilities | Cloud Foundry
2022-03-08 00:00:00
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2022-01-20 00:00:00
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ubuntu
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2022-03-09 12:40:55
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2022-03-09 15:30:58
slackware
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[slackware-security] Slackware 14.2 kernel
2022-02-01 05:01:08
ibm
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2022-06-29 23:37:51

4.7 Medium

CVSS3

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

5.2 Medium

AI Score

Confidence

High

4.7 Medium

CVSS2

Access Vector

LOCAL

Access 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

0.0004 Low

EPSS

Percentile

5.3%

JSON
Related for CVE-2021-20321
prion1veracode1cbl_mariner1osv12oraclelinux2nessus45redhat7redhatcve1cnvd1debiancve1rocky2almalinux1ubuntucve1openvas36mageia2cloudfoundry3ubuntu6amazon1photon1suse3debian3slackware1ibm1