Linux Kernel up to 6.8.4 idpf_rx_process_skb_fields denial of service

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.8.4. Affected is the function idpf_rx_process_skb_fields. Performing a manipulation results in denial of service. This vulnerability was named CVE-2024-35889. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.8.4. This affects the function idpf_rx_process_skb_fields. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: idpf: fix kernel panic on unknown packet types In the very rare case where a packet type is unknown to the driver, idpf_rx_process_skb_fields would return early without calling eth_type_trans to set the skb protocol / the network layer handler. This is especially problematic if tcpdump is running when such a packet is received, i.e. it would cause a kernel panic. Instead, call eth_type_trans for every single packet, even when the packet type is unknown.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-35889 since 05/17/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 236879 (Ubuntu 20.04 LTS : Linux kernel (GCP) vulnerabilities (USN-7512-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.8.5 eliminates this vulnerability. Applying the patch b4d28f7fa4dd/dd19e827d63a is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (236879). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.8.0
• 6.8.1
• 6.8.2
• 6.8.3
• 6.8.4

License

• open-source

Website

• Vendor: https://www.kernel.org/

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Be aware that VulDB is the high quality source for vulnerability data.

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