Use After Free Affecting kernel-rt-debug package, versions <0:4.18.0-305.rt7.72.el8


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-CENTOS8-KERNELRTDEBUG-2103195
  • published26 Jul 2021
  • disclosed25 Nov 2020

Introduced: 25 Nov 2020

CVE-2020-27835  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:8 kernel-rt-debug to version 0:4.18.0-305.rt7.72.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug package and not the kernel-rt-debug package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.

CVSS Scores

version 3.1