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Use After FreeWeakness · CWE-416

CVE-2025-48521

MEDIUM · 6.9 CVSS v4.0 Published 2026-05-15
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
71/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper input validation in the AMD Secure Processor (ASP) PCI driver could allow a local attacker to trigger a Use-After-Free (UAF) condition, potentially resulting in a loss of platform integrity or crash.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Improper input validation in the AMD Secure Processor (ASP) PCI driver allows a local attacker to trigger a Use-After-Free (UAF) condition, potentially compromising platform integrity or causing system crashes.

MitigationApply AMD-provided driver/firmware updates for the Secure Processor when available; restrict local access to trusted personnel and monitor for anomalous driver behavior.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Verify AMD Secure Processor hardware presence
    Check system information for AMD Secure Processor: on Linux run 'lspci | grep -i amd' and look for 'Secure Processor' or 'ASP' entries, or check BIOS/UEFI settings for ASP status.
    Affected if System lacks AMD Secure Processor hardware - not affected.
  2. Identify the ASP PCI driver
    List loaded kernel modules: on Linux run 'lsmod | grep -i asp' or check /proc/modules. Also run 'lspci -k' to see which driver controls the ASP device.
    Affected if No ASP driver loaded or no ASP PCI device found - not affected.
  3. Determine the driver version
    For the identified ASP driver module, check its version: run 'modinfo <driver_name>' on Linux, or check driver file properties in Device Manager on Windows.
    Affected if Unable to determine driver version - manual investigation required.
  4. Compare installed version to vendor advisories
    Check AMD's official security advisories for CVE-2025-48521 to obtain the list of affected driver versions. Compare your installed version against this list.
    Affected if Driver version matches an affected version listed in AMD advisory - likely affected.
  5. Review system crash logs for UAF indicators
    Check system event logs (Linux: dmesg, /var/log/syslog; Windows: Event Viewer > System logs) for any use-after-free errors, memory corruption, or unexpected ASP driver crashes around the time of any incidents.
    Affected if UAF or memory corruption errors linked to ASP driver found - strongly indicates exploitation attempt or successful exploitation.

If the system has AMD Secure Processor hardware with an ASP PCI driver version that matches AMD's affected versions list for CVE-2025-48521, the environment is affected and should be monitored or mitigated.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply AMD-provided driver/firmware updates for the Secure Processor when available; restrict local access to trusted personnel and monitor for anomalous driver behavior.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing8.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,800
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,080.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-48521 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data