Use After Free Affecting kernel-headers package, versions <0:4.18.0-372.9.1.el8


Severity

Recommended
high

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.13% (50th percentile)

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  • Snyk ID SNYK-CENTOS8-KERNELHEADERS-1970679
  • published 28 Jul 2021
  • disclosed 2 Oct 2020

How to fix?

Upgrade Centos:8 kernel-headers to version 0:4.18.0-372.9.1.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by Centos. See How to fix? for Centos: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
Expand this section

NVD

6.4 medium
  • Attack Vector (AV)
    Physical
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

6.4 medium
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SUSE

5.5 medium