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CVE-2021-4083 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugzilla.redhat.com/show_bug.cgi?id=2029923 Issue Tracking  Patch  Third Party Advisory 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9 Mailing List  Patch 
https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html Mailing List  Third Party Advisory 
https://security.netapp.com/advisory/ntap-20220217-0005/ Third Party Advisory 
https://www.debian.org/security/2022/dsa-5096 Third Party Advisory 
https://www.oracle.com/security-alerts/cpujul2022.html Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST  
CWE-416 Use After Free Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

10 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-4083
NVD Published Date:
01/18/2022
NVD Last Modified:
10/06/2023
Source:
Red Hat, Inc.