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Improper Input Validation Affecting kernel-tools package, versions <0:4.18.0-305.el8

Severity

 Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.11% (47th percentile)

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  • Snyk ID SNYK-RHEL8-KERNELTOOLS-4009756
  • published 26 Jul 2021
  • disclosed 25 Sep 2020
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Introduced: 25 Sep 2020

CVE-2020-25643 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade RHEL:8 kernel-tools to version 0:4.18.0-305.el8 or higher.
This issue was patched in RHSA-2021:1578.

NVD Description

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

A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS Scores

version 3.1
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NVD

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

Red Hat

7.2 high
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SUSE

7.5 high