Improper Input Validation Affecting kpatch-patch-4_18_0-553_16_1 package, versions <0:1-1.el8_10


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-CENTOS8-KPATCHPATCH4180553161-8138097
  • published1 Oct 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 Centos:8 kpatch-patch-4_18_0-553_16_1 to version 0:1-1.el8_10 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kpatch-patch-4_18_0-553_16_1 package and not the kpatch-patch-4_18_0-553_16_1 package as distributed by Centos. See How to fix? for Centos:8 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