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Linux Kernel TCP ULP Support Vulnerability in SMC Reverted

Vulnerability

A vulnerability in the Linux kernel's TCP User Layer Protocol (ULP) support for Socket Memory Control (SMC) has been addressed. The issue arose because the implementation improperly modified active TCP socket structures in place, violating core Virtual File System (VFS) invariants. This created a risk of use-after-free errors and general system instability. The vulnerability affects the Linux kernel stable tree.

Impact

The vulnerability could lead to use-after-free errors and general system instability.

Added: Jun 9, 2026, 2:56 PM
Updated: Jun 9, 2026, 2:56 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
5.0
exploitability
4.0
remediation
7.7
relevance
9.6
threat
3.2
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.