Out-of-bounds Write Affecting kernel-modules-extra package, versions <0:4.18.0-348.el8


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-CENTOS8-KERNELMODULESEXTRA-2136500
  • published26 Jul 2021
  • disclosed29 Mar 2021

Introduced: 29 Mar 2021

CVE-2021-31916  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Centos:8 kernel-modules-extra to version 0:4.18.0-348.el8 or higher.

NVD Description

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

An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1