Out-of-bounds Write Affecting kernel-uek-tools package, versions <0:5.4.17-2102.202.5.el7uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEKTOOLS-2598946
  • published10 Apr 2022
  • disclosed6 May 2021

Introduced: 6 May 2021

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

How to fix?

Upgrade Oracle:7 kernel-uek-tools to version 0:5.4.17-2102.202.5.el7uek or higher.
This issue was patched in ELSA-2021-9306.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-tools package and not the kernel-uek-tools package as distributed by Oracle. See How to fix? for Oracle:7 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