CVE-2020-12901

KASLR bypass via arbitrary free after use

Published Nov 15, 2021 · Updated Sep 17, 2024

Use-after-free in AMD Radeon Software before 20.11.2 allows local users to bypass KASLR or disclose kernel information through the Windows driver. AMD's bulletin attributes the flaw to arbitrary free-after-use handling in AMD Escape calls but does not identify the specific handler or object lifecycle. Exploitation requires local access to the Windows graphics driver; the stated consequences are information disclosure and KASLR bypass, with no documented data modification or service interruption.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in AMD Radeon Software before 20.11.2 allows local users to bypass KASLR or disclose kernel information through the Windows driver. AMD's bulletin attributes the flaw to arbitrary free-after-use handling in AMD Escape calls but does not identify the specific handler or object lifecycle. Exploitation requires local access to the Windows graphics driver; the stated consequences are information disclosure and KASLR bypass, with no documented data modification or service interruption.

The record

CVE
CVE-2020-12901
Published
Nov 15, 2021
Updated
Sep 17, 2024
Vendor
AMD
Product
Radeon Software
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 15, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Radeon Pro Software for Enterprise <21.Q2
  2. Affected versionversion=Radeon Software <20.11.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

AMD · Radeon Softwareversion=Radeon Pro Software for Enterprise <21.Q2; version=Radeon Software <20.11.2

Published CVSS scores

2.1NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo