Homepage
About Snyk

Loop with Unreachable Exit Condition ('Infinite Loop') Affecting perf package, versions <0:4.18.0-80.15.1.el8_0

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.1% (43rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-RHEL8-PERF-4375151
  • published 26 Jul 2021
  • disclosed 25 Apr 2019
Report a new vulnerability Found a mistake?

Introduced: 25 Apr 2019

CVE-2019-3900 Open this link in a new tab
CWE-835 Open this link in a new tab

How to fix?

Upgrade RHEL:8 perf to version 0:4.18.0-80.15.1.el8_0 or higher.
This issue was patched in RHSA-2020:0204.

NVD Description

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

An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the vhost_net kernel thread, resulting in a DoS scenario.

References

CVSS Scores

version 3.1
Expand this section

NVD

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