Double Free Affecting kernel-modules package, versions <0:4.18.0-372.9.1.el8


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.22% (60th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELMODULES-2833036
  • published10 Apr 2022
  • disclosed21 Jul 2021

Introduced: 21 Jul 2021

CVE-2021-37159  (opens in a new tab)
CWE-415  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-modules to version 0:4.18.0-372.9.1.el8 or higher.
This issue was patched in ELSA-2022-1988.

NVD Description

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

hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.

CVSS Scores

version 3.1