Improper Input Validation Affecting kernel-64k-modules package, versions <0:5.14.0-284.80.1.el9_2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (15th 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 Learn

Learn about Improper Input Validation vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-RHEL9-KERNEL64KMODULES-7831987
  • published26 Aug 2024
  • disclosed24 Jul 2024

Introduced: 24 Jul 2024

CVE-2024-41091  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-64k-modules to version 0:5.14.0-284.80.1.el9_2 or higher.
This issue was patched in RHSA-2024:5672.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-modules package and not the kernel-64k-modules package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

tun: add missing verification for short frame

The cited commit missed to check against the validity of the frame length in the tun_xdp_one() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tun_xdp_one-->eth_type_trans() may access the Ethernet header although it can be less than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata.

In the alternative path, tun_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted for IFF_TAP.

This is to drop any frame shorter than the Ethernet header size just like how tun_get_user() does.

CVE: CVE-2024-41091

CVSS Scores

version 3.1