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CVE-2024-35884

9.8 · CRITICAL
Published May 19, 2024 linux CWE-617 EPSS 0.68% (50th pctl)

Overview

CVE-2024-35884 is a critical-severity vulnerability affecting linux linux_kernel. It was published on May 19, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

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

udp: do not accept non-tunnel GSO skbs landing in a tunnel

When rx-udp-gro-forwarding is enabled UDP packets might be GROed when

being forwarded. If such packets might land in a tunnel this can cause

various issues and udp_gro_receive makes sure this isn't the case by

looking for a matching socket. This is performed in

udp4/6_gro_lookup_skb but only in the current netns. This is an issue

with tunneled packets when the endpoint is in another netns. In such

cases the packets will be GROed at the UDP level, which leads to various

issues later on. The same thing can happen with rx-gro-list.

We saw this with geneve packets being GROed at the UDP level. In such

case gso_size is set; later the packet goes through the geneve rx path,

the geneve header is pulled, the offset are adjusted and frag_list skbs

are not adjusted with regard to geneve. When those skbs hit

skb_fragment, it will misbehave. Different outcomes are possi

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 5.6, < 5.10.215 Affected

Frequently Asked Questions

What is CVE-2024-35884?

CVE-2024-35884 is a critical-severity vulnerability affecting linux linux_kernel. It was published on May 19, 2024 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-35884?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-35884?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-35884?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-35884 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.