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ubuntuUbuntuUSN-4727-1
HistoryFeb 10, 2021 - 12:00 a.m.

Linux kernel vulnerability

2021-02-1000:00:00
ubuntu.com
145
linux kernel
af_vsock
race conditions
ubuntu 20.10
ubuntu 20.04 lts

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.3

Confidence

High

EPSS

0

Percentile

5.2%

JSON

Releases

  • Ubuntu 20.10
  • Ubuntu 20.04 LTS

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-hwe-5.8 - Linux hardware enablement (HWE) kernel
  • linux-kvm - Linux kernel for cloud environments
  • linux-oem-5.6 - Linux kernel for OEM systems
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-raspi - Linux kernel for Raspberry Pi (V8) systems

Details

Alexander Popov discovered that multiple race conditions existed in the
AF_VSOCK implementation in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or execute arbitrary code.

Related

openvas 3
nessus 7
cvelist 1
ubuntucve 1
cbl_mariner 1
veracode 1
cve 1
redhatcve 1
mageia 2
osv 2
debiancve 1
nvd 1
githubexploit 1
prion 1
redhat 5
oraclelinux 1
almalinux 1
photon 2
openvas
openvas
Ubuntu: Security Advisory (USN-4727-1)
2021-02-11 00:00:00
Mageia: Security Advisory (MGASA-2021-0084)
2022-01-28 00:00:00
Mageia: Security Advisory (MGASA-2021-0085)
2022-01-28 00:00:00
nessus
nessus
Ubuntu 20.04 LTS : Linux kernel vulnerability (USN-4727-1)
2021-02-10 00:00:00
CentOS 8 : kernel (CESA-2021:1093)
2021-04-09 00:00:00
Oracle Linux 8 : kernel (ELSA-2021-1093)
2021-04-07 00:00:00
cvelist
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CVE-2021-26708
2021-02-05 07:41:12
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2021-02-05 00:00:00
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CVE-2021-26708 affecting package kernel 5.4.91-6
2021-08-25 19:57:09
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Privilege Escalation
2021-02-10 19:38:55
cve
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CVE-2021-26708
2021-02-05 14:15:18
redhatcve
redhatcve
CVE-2021-26708
2021-02-05 16:53:15
mageia
mageia
Updated kernel packages fix security vulnerability
2021-02-15 22:24:33
Updated kernel-linus packages fix security vulnerabilities
2021-02-15 22:24:33
osv
osv
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oem-5.6, linux-oracle, linux-raspi vulnerability
2021-02-10 00:54:45
Important: kernel security, bug fix, and enhancement update
2021-04-06 13:33:17
debiancve
debiancve
CVE-2021-26708
2021-02-05 14:15:18
nvd
nvd
CVE-2021-26708
2021-02-05 14:15:18
githubexploit
githubexploit
Exploit for Improper Locking in Linux Linux Kernel
2021-02-15 20:27:06
prion
prion
Race condition
2021-02-05 14:15:00
redhat
redhat
(RHSA-2021:1093) Important: kernel security, bug fix, and enhancement update
2021-04-06 13:33:17
(RHSA-2021:1081) Important: kernel-rt security and bug fix update
2021-04-06 13:30:32
(RHSA-2021:1369) Moderate: Red Hat Advanced Cluster Management 2.1.6 security and bug fix updates
2021-04-26 11:51:14
oraclelinux
oraclelinux
kernel security, bug fix, and enhancement update
2021-04-07 00:00:00
almalinux
almalinux
Important: kernel security, bug fix, and enhancement update
2021-04-06 13:33:17
photon
photon
Critical Photon OS Security Update - PHSA-2021-4.0-0007
2021-04-03 00:00:00
Critical Photon OS Security Update - PHSA-2021-0007
2021-04-07 00:00:00

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.3

Confidence

High

EPSS

0

Percentile

5.2%

JSON
Related for USN-4727-1
openvas3nessus7cvelist1ubuntucve1cbl_mariner1veracode1cve1redhatcve1mageia2osv2debiancve1nvd1githubexploit1prion1redhat5oraclelinux1almalinux1photon2