AMD uProf Vulnerabilities

Summary

Researchers reported vulnerabilities in AMD uProf that could allow a local attacker with user privileges to cause a loss of availability.

AMD uProf (“MICRO-prof”) is a performance analysis tool suite for x86-based applications running on Windows, Linux, and FreeBSD operating systems. It provides performance metrics for AMD Zen-based processors and AMD Instinct™ MI Series accelerators. AMD uProf enables developers to better understand performance bottlenecks, optimization scope, and evaluate improvements.

CVE-2026-0466
The report noted that a vulnerability in AMD uProf could allow a local attacker with user privileges to write to memory mapped by the kernel.

Based on the researcher’s report, AMD has confirmed that the issue stems from the driver creating a shared section object with a NULL security descriptor and exposing kernel pointers in shared memory, which could allow an attacker to write to kernel-mapped memory and potentially cause a system crash or denial of service. AMD has released mitigations intended to address the reported issue.

CVE-2026-28237
The report noted that a vulnerability in AMD uProf could allow a local attacker with user privileges to allocate excessive resources to the kernel driver, potentially leading to resource exhaustion, uncontrolled memory consumption, and a denial-of-service condition.

Based on the researcher’s report, AMD has reviewed the findings and released mitigations intended to address the reported issue.

Acknowledgement 

AMD thanks the following for reporting these issues and for engaging in coordinated vulnerability disclosure.

• Grant Hume: CVE-2026-0466. AMD also thanks Jiraput Thamsongkrah who subsequently reported CVE-2026-0466.
• AMD Bug Bounty researcher Mitesh Dhami: CVE-2026-28237

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