CVE-2024-41091 Affecting kernel-uek package, versions <0:4.1.12-124.87.2.2.el6uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-ORACLE6-KERNELUEK-7569077
  • published26 Jul 2024
  • disclosed29 Jul 2024

Introduced: 26 Jul 2024

CVE-2024-41091  (opens in a new tab)

How to fix?

Upgrade Oracle:6 kernel-uek to version 0:4.1.12-124.87.2.2.el6uek or higher.
This issue was patched in ELSA-2024-12549.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek package and not the kernel-uek package as distributed by Oracle. See How to fix? for Oracle:6 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

References

CVSS Scores

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