Linux Kernel io_uring Buffer Handling Signedness Vulnerability

Vulnerability

A vulnerability in the Linux kernel's io_uring buffer management has been addressed. The issue arose because buffer lengths were treated as unsigned but converted to signed integers when committing, potentially leading to incorrect behavior with large buffers. The vulnerability affected the stable versions of the Linux kernel.

Impact

The vulnerability could cause unexpected behavior in buffer handling, particularly with large buffers that could be misinterpreted as negative values due to the signed conversion.

Remediation

Users can upgrade to the latest version of the Linux kernel stable release to address this vulnerability.

Added: Sep 16, 2025, 3:59 PM
Updated: Sep 16, 2025, 3:59 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
0.6
exploitability
5.3
remediation
7.7
relevance
0.6
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.