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Linux Kernel BPF Scalar Adjustment Vulnerability in ALU Operations

Vulnerability

A vulnerability in the Linux kernel's BPF (Berkeley Packet Filter) subsystem has been addressed. The issue arose in the BPF verifier, where scalar adjustments were incorrectly applied to BPF_NEG operations when the destination register contained a pointer. This vulnerability affected the Linux kernel stable tree.

Impact

The vulnerability could lead to incorrect handling of BPF_NEG operations, potentially causing errors in BPF program verification.

Remediation

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

Added: Oct 28, 2025, 12:58 PM
Updated: Oct 28, 2025, 12:58 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
0.6
exploitability
4.0
remediation
7.7
relevance
0.9
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.