Linux Kernel ibmvnic Driver Vulnerability Leading to Buffer Overflow

CVE-2025-22104

Summary

A vulnerability in the ibmvnic driver of the Linux kernel can lead to a buffer overflow when printing hex dumps. The issue arises when the driver casts the buffer to an 8-byte long type and utilizes improper string formatters. If the buffer size is not a multiple of 8, it opens the door for potential read buffer overflows. The newly implemented function in the driver creates a safer approach by iterating over the buffer and using specialized kernel helpers, mitigating risks associated with improper memory access. This vulnerability highlights the importance of maintaining secure coding practices to prevent similar issues in the future.

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