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Linux Kernel SMC Vulnerability in Proposal Message Handling

Vulnerability

A vulnerability exists in the Linux kernel's SMC (Shared Memory Communication) implementation, specifically in how proposal messages from remote clients are processed. The vulnerability arises because the 'iparea_offset' and 'ipv6_prefixes_cnt' fields in the proposal messages are not fully trusted. If the 'iparea_offset' exceeds a certain limit, it could lead to accessing incorrect memory addresses, potentially causing a crash. This issue has been addressed by adding checks for 'iparea_offset' and 'ipv6_prefixes_cnt' before they are used.

Impact

Exceeding the maximum value of 'iparea_offset' could lead to accessing wrong memory addresses, causing a crash.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
5.3
remediation
0.0
relevance
0.0
threat
3.2
urgency
2.9
incentive
1.7

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