NULL Pointer Dereference Affecting kernel-rt-trace-devel package, versions <0:3.10.0-957.27.2.rt56.940.el7


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.78% (82nd percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTTRACEDEVEL-2135967
  • published 26 Jul 2021
  • disclosed 3 Jun 2019

How to fix?

Upgrade Centos:7 kernel-rt-trace-devel to version 0:3.10.0-957.27.2.rt56.940.el7 or higher.

NVD Description

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

A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.

CVSS Scores

version 3.1
Expand this section

NVD

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