Race Condition Affecting kernel-bootwrapper package, versions <0:3.10.0-1160.62.1.el7


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELBOOTWRAPPER-2320372
  • published15 Dec 2021
  • disclosed3 Dec 2021

Introduced: 3 Dec 2021

CVE-2021-4083  (opens in a new tab)
CWE-362  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Centos:7 kernel-bootwrapper to version 0:3.10.0-1160.62.1.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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.

CVSS Scores

version 3.1