BaseFortify

Publication date: 2025-12-16

Last updated on: 2025-12-18

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Add missing terminator for zen5_rdseed_microcode Running x86_match_min_microcode_rev() on a Zen5 CPU trips up KASAN for an out of bounds access.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-12-16

Last Modified

2025-12-18

Generated

2026-07-06

AI Q&A

2025-12-16

EPSS Evaluated

2026-07-05

NVD

CVE-2025-68195

EUVD

EUVD-2025-203701

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel involves the x86/CPU/AMD code, specifically a missing terminator for zen5_rdseed_microcode. When the function x86_match_min_microcode_rev() runs on a Zen5 CPU, it causes the Kernel Address Sanitizer (KASAN) to detect an out-of-bounds memory access, which indicates improper handling of microcode data.

Impact Analysis

The vulnerability can lead to out-of-bounds memory access in the Linux kernel when running on a Zen5 CPU. This could potentially cause system instability, crashes, or security issues related to memory corruption.

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