CVE-2023-31331 — Improper access control in the DRTM firmware could allow a privileged attacker t

Improper access control in the DRTM firmware could allow a privileged attacker to perform multiple driver initializations, resulting in stack memory corruption that could potentially lead to loss of integrity or availability.

01What is this vulnerability?

Improper access control in the DRTM firmware could allow a privileged attacker to perform multiple driver initializations, resulting in stack memory corruption that could potentially lead to loss of integrity or availability.

02Affected products

Vendor	Product	Versions
AMD	AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics	ComboAM4v2PI 1.2.0.CA
AMD	AMD Ryzen™ 7000 Series Desktop Processors	ComboAM5 1.1.0.2
AMD	AMD Ryzen™ 4000 Series Desktop Processor with Radeon™ Graphics	ComboAM4v2PI 1.2.0.CA
AMD	AMD Ryzen™ 8000 Series Processor with Radeon™ Graphics	ComboAM5 1.1.0.2
AMD	AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics	RenoirPI-FP6 1.0.0.D
AMD	AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics	Cezanne-FP6 1.0.1.0
AMD	AMD Ryzen™ 6000 Series Processor with Radeon™ Graphics	Rembrandt-FP7 1.0.0.A
AMD	AMD Ryzen™ 7035 Series Processor with Radeon™ Graphics	Rembrandt-FP7 1.0.0.A
AMD	AMD Ryzen™ 7040 Series Processors with Radeon™ Graphics	PhoenixPI-FP8-FP7 1.1.0.2
AMD	AMD Ryzen™ 8040 Series Mobile Processors with Radeon™ Graphics	PhoenixPI-FP8-FP7 1.1.0.2
AMD	AMD Ryzen™ 7000 Series Mobile Processors	DragonRangeFL1PI 1.0.0.3C
AMD	AMD Ryzen™ Embedded 7000	EmbeddedAM5PI 1.0.0.1
AMD	AMD Ryzen™ Embedded V2000	EmbeddedPI-FP6 1.0.0.9
AMD	AMD Ryzen™ Embedded V3000	Embedded-PI FP7r2 1.0.0.9

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2025-02-11T21:44:03.782Z
• Last modified: 2025-02-12T15:36:21.957Z

09References

• www.amd.com — https://www.amd.com/en/resources/product-security/bulletin/amd-sb-4008.html
• www.amd.com — https://www.amd.com/en/resources/product-security/bulletin/amd-sb-5004.html