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CVE-2021-4083

nvd nist
Published: Jan 18, 2022Modified: Jun 17, 2026

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7.0
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.0 / Impact: 5.9
Source: NVD

Description

A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4.

Affected (25)

Show all products
Linux: Linux Kernel · Netapp: H410c Firmware, H300s Firmware, H500s Firmware, H700s Firmware, H300e Firmware, H500e Firmware, H700e Firmware, H410s Firmware, Hci Management Node, Solidfire · Debian: Debian Linux · Oracle: Communications Cloud Native Core Binding Support Function, Communications Cloud Native Core Network Exposure Function, Communications Cloud Native Core Policy
Linux
1 product
Linux Kernel
Netapp
10 products
H410c Firmware
H300s Firmware
H500s Firmware
H700s Firmware
H300e Firmware
H500e Firmware
H700e Firmware
H410s Firmware
Hci Management Node
Solidfire
Debian
1 product
Debian Linux
Oracle
3 products
Communications Cloud Native Core Binding Support Function
Communications Cloud Native Core Network Exposure Function
Communications Cloud Native Core Policy
Configuration A
10 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
Before 4.4.294
Linux Kernel
From 4.10 to 4.14.257
Linux Kernel
From 4.15 to 4.19.220
Linux Kernel
From 4.20 to 5.4.164
Linux Kernel
From 4.5 to 4.9.292
Linux Kernel
From 5.11 to 5.15.7
Linux Kernel
From 5.5.0 to 5.10.84
Linux Kernel
Version 5.16 rc1
Linux Kernel
Version 5.16 rc2
Linux Kernel
Version 5.16 rc3
Configuration B
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H410c Firmware
All versions
Running on/withPlatform Versions
Netapp
H410c
All versions
Configuration C
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H300s Firmware
All versions
Running on/withPlatform Versions
Netapp
H300s
All versions
Configuration D
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H500s Firmware
All versions
Running on/withPlatform Versions
Netapp
H500s
All versions
Configuration E
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H700s Firmware
All versions
Running on/withPlatform Versions
Netapp
H700s
All versions
Configuration F
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H300e Firmware
All versions
Running on/withPlatform Versions
Netapp
H300e
All versions
Configuration G
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H500e Firmware
All versions
Running on/withPlatform Versions
Netapp
H500e
All versions
Configuration H
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H700e Firmware
All versions
Running on/withPlatform Versions
Netapp
H700e
All versions
Configuration I
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
H410s Firmware
All versions
Running on/withPlatform Versions
Netapp
H410s
All versions
Configuration J
2 vulnerable
Vulnerable SoftwareAffected Versions
Debian
Debian Linux
Version 10.0
Debian Linux
Version 9.0
Configuration K
2 vulnerable
Vulnerable SoftwareAffected Versions
Hci Management Node
All versions
Solidfire
All versions
Configuration L
3 vulnerable
Vulnerable SoftwareAffected Versions
Communications Cloud Native Core Binding Support Function
Version 22.1.3
Communications Cloud Native Core Network Exposure Function
Version 22.1.1
Communications Cloud Native Core Policy
Version 22.2.0

Related CWEs

CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (14)

Source: secalert@redhat.com
Issue TrackingPatchThird Party Advisory
Source: secalert@redhat.com
Mailing ListPatch
Source: secalert@redhat.com
Mailing ListThird Party Advisory
Source: secalert@redhat.com
Mailing ListThird Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatch
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory

Timeline

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