Loop with Unreachable Exit Condition ('Infinite Loop') Affecting kernel-rt-trace package, versions <0:3.10.0-1062.rt56.1022.el7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-RHEL7-KERNELRTTRACE-4901486
  • published26 Jul 2021
  • disclosed25 Apr 2019

Introduced: 25 Apr 2019

CVE-2019-3900  (opens in a new tab)
CWE-835  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:7 kernel-rt-trace to version 0:3.10.0-1062.rt56.1022.el7 or higher.
This issue was patched in RHSA-2019:2043.

NVD Description

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