CVE-2023-20548: A Time-of-check time-of-use (TOCTOU) race condition in the AMD Secure Processor (ASP) could allow an attacker
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Routine
HIGH 7.8UPGRADEUPGRADEMITIGATE
CVE-2023-20548 is a high-severity flaw (CVSS 7.8) affecting rocm, radeon software, radeon vii firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A Time-of-check time-of-use (TOCTOU) race condition in the AMD Secure Processor (ASP) could allow an attacker to corrupt memory resulting in loss of integrity, confidentiality, or availability.
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
amd radeon vii firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
amd radeon pro vii firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-20548?
rocm: upgrade to 6.2.0; radeon software: upgrade to 24.6.1, 25.q2; radeon vii firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2023-20548 being exploited?
CVE-2023-20548 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-20548 affect?
CVE-2023-20548 affects rocm, radeon software, radeon vii firmware. Severity is high (CVSS 7.8). A Time-of-check time-of-use (TOCTOU) race condition in the AMD Secure Processor (ASP) could allow an attacker to corrupt memory resulting in loss of integrity, confidentiality, or availability.
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