CVE-2021-26381

State: Published
Severity: 7.1 High
Published: Feb 10, 2026
Updated: Feb 26, 2026
Reserved: Jan 29, 2021

Description

Improper system call parameter validation in the Trusted OS may allow a malicious driver to perform mapping or unmapping operations on a large number of pages, potentially resulting in kernel memory corruption.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	AMD

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
AMD Ryzen™ Threadripper™ PRO 3000 WX-Series ProcessorsAMD	ChagallWSPI-sWRX8 1.0.0.2/ CastlePeakWSPI-sWRX8 1.0.0.9Not affected
AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ GraphicsAMD	ComboAM4v2 PI 1.2.0.5Not affected
AMD Ryzen™ Threadripper™ PRO 5000 WX-Series ProcessorsAMD	ChagallWSPI-sWRX8 1.0.0.1Not affected
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ GraphicsAMD	PicassoPI-FP5 1.0.0.ENot affected
AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ GraphicsAMD	CezannePI-FP6 1.0.0.8Not affected
AMD Ryzen™ 3000 Series Desktop ProcessorsAMD	ComboAM4PI 1.0.0.9/ ComboAM4 V2 PI 1.2.0.8Not affected
AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ GraphicsAMD	RenoirPI-FP6 1.0.0.8Not affected
AMD Ryzen™ 4000 Series Desktop ProcessorsAMD	ComboAM4v2 PI 1.2.0.5Not affected
AMD Ryzen™ 5000 Series Desktop ProcessorsAMD	ComboAM4 V2 PI 1.2.0.8Not affected
AMD Ryzen™ Embedded R1000 Series ProcessorsAMD	EmbeddedPI-FP5 1.2.0.ANot affected
AMD Ryzen™ Embedded R2000 Series ProcessorsAMD	EmbeddedR2KPI-FP5_1.0.0.2Not affected
AMD Ryzen™ Embedded 5000 Series ProcessorsAMD	EmbAM4PI 1.0.0.2Not affected
AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Raven Ridge")AMD	EmbeddedPI-FP5 1.2.0.ANot affected
AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Picasso")AMD	120ANot affected
AMD Ryzen™ Embedded V2000 Series ProcessorsAMD	EmbeddedPI-FP6_1.0.0.6Not affected
AMD Ryzen™ Embedded V3000 Series ProcessorsAMD	EmbeddedPI-FP7r2_0080Not affected
AMD Radeon™ RX 5000 Series Graphics ProductsAMD	AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)Not affected
AMD Radeon™ PRO W5000 Series Graphics ProductsAMD	AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)Not affected
AMD Radeon™ PRO W6000 Series Graphics ProductsAMD	AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)Not affected
AMD Radeon™ RX 6000 Series Graphics ProductsAMD	AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)Not affected
AMD Radeon™ PRO V520AMD	Contact Your AMD Customer Engineering RepresenatativeNot affected
AMD Radeon™ PRO V620AMD	Contact Your AMD Customer Engineering RepresenatativeNot affected

References

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