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Use After Free Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-80.11.1.rt9.156.el8_0

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUGKVM-3471192
  • published26 Jul 2021
  • disclosed4 Dec 2018
Report a new vulnerability Found a mistake?

Introduced: 4 Dec 2018

CVE-2018-19824  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug-kvm to version 0:4.18.0-80.11.1.rt9.156.el8_0 or higher.
This issue was patched in RHSA-2019:2741.

NVD Description

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

In the Linux kernel through 4.19.6, a local user could exploit a use-after-free in the ALSA driver by supplying a malicious USB Sound device (with zero interfaces) that is mishandled in usb_audio_probe in sound/usb/card.c.

References