NULL Pointer Dereference Affecting kernel-rt-kvm package, versions <0:3.10.0-1062.rt56.1022.el7


Severity

high

    Threat Intelligence

    EPSS
    1.82% (89th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTKVM-2139507
  • published 26 Jul 2021
  • disclosed 7 May 2019

How to fix?

Upgrade Centos:7 kernel-rt-kvm to version 0:3.10.0-1062.rt56.1022.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm package and not the kernel-rt-kvm package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

An issue was discovered in the Linux kernel before 5.0.7. A NULL pointer dereference can occur when megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c. This causes a Denial of Service, related to a use-after-free.

CVSS Scores

version 3.1
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Snyk

6.2 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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NVD

7.5 high
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SUSE

3.9 low
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Red Hat

6.2 medium