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Linux Kernel Null Pointer Dereference Vulnerability in dma-buf Memory Barrier Handling

Vulnerability

A null pointer dereference vulnerability has been identified in the Linux kernel's dma-buf subsystem. This issue arises from improper memory barrier management when updating the number of fences. The vulnerability allows memory updates to be reordered, potentially leading to a null pointer dereference.

Impact

Exploitation of this vulnerability can cause a null pointer dereference, leading to a denial of service condition by causing a kernel crash.

Added: Jul 3, 2025, 8:17 AM
Updated: Jul 3, 2025, 8:17 AM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
3.5
remediation
0.0
relevance
0.2
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.