Information Exposure Affecting kernel-debug-devel package, versions <0:4.18.0-193.el8


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.25% (66th 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 IDSNYK-RHEL8-KERNELDEBUGDEVEL-3737615
  • published26 Jul 2021
  • disclosed22 Oct 2019

Introduced: 22 Oct 2019

CVE-2019-18282  (opens in a new tab)
CWE-200  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:8 kernel-debug-devel to version 0:4.18.0-193.el8 or higher.
This issue was patched in RHSA-2020:1769.

NVD Description

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

The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value remains the same starting from boot time, and can be inferred by an attacker. This affects net/core/flow_dissector.c and related code.

CVSS Scores

version 3.1