Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-46330

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: Revert "net/smc: Introduce TCP ULP support" This reverts commit d7cd421da9da2cc7b4d25b8537f66db5c8331c40.

Published Jun 9, 2026CWE-416EPSS 0.11%

Overview

CVE-2026-46330 is a high-severity vulnerability. It was published on June 9, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

Revert "net/smc: Introduce TCP ULP support"

This reverts commit d7cd421da9da2cc7b4d25b8537f66db5c8331c40.

As reported by Al Viro, the TCP ULP support for SMC is fundamentally

broken. The implementation attempts to convert an active TCP socket

into an SMC socket by modifying the underlying `struct file`, dentry,

and inode in-place, which violates core VFS invariants that assume

these structures are immutable for an open file, creating a risk of

use after free errors and general system instability.

Given the severity of this design flaw and the fact that cleaner

alternatives (e.g., LD_PRELOAD, BPF) exist for legacy application

transparency, the correct course of action is to remove this feature

entirely.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refgit.kernel.org/stable/c/6c505d95c69e27dbf28fea29dc84d2498d69515cRefgit.kernel.org/stable/c/df31a6b0a3057e66994ad6ccf5d95b9b9514f033

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46330?

CVE-2026-46330 is a high-severity vulnerability. It was published on June 9, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-46330?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-46330?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2026-46330?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46330 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999