CVE-2021-26381 json
Improper system call parameter validation in the Trusted OS may allow a malicious driver to perform mapping or unmapping operations on a la…
published 2026-02-10 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2021-13187
- cvss
- 7.1
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- AMD AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors ChagallWSPI-sWRX8 1.0.0.2/ CastlePeakWSPI-sWRX8 1.0.0.9
- AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics ComboAM4v2 PI 1.2.0.5
- AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors ChagallWSPI-sWRX8 1.0.0.1
- AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics PicassoPI-FP5 1.0.0.E
- AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics CezannePI-FP6 1.0.0.8
- AMD AMD Ryzen™ 3000 Series Desktop Processors ComboAM4PI 1.0.0.9/ ComboAM4 V2 PI 1.2.0.8
- AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics RenoirPI-FP6 1.0.0.8
- AMD AMD Ryzen™ 4000 Series Desktop Processors ComboAM4v2 PI 1.2.0.5
- AMD AMD Ryzen™ 5000 Series Desktop Processors ComboAM4 V2 PI 1.2.0.8
- AMD AMD Ryzen™ Embedded R1000 Series Processors EmbeddedPI-FP5 1.2.0.A
- AMD AMD Ryzen™ Embedded R2000 Series Processors EmbeddedR2KPI-FP5_1.0.0.2
- AMD AMD Ryzen™ Embedded 5000 Series Processors EmbAM4PI 1.0.0.2
- AMD AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Raven Ridge") EmbeddedPI-FP5 1.2.0.A
- AMD AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Picasso") 120A
- AMD AMD Ryzen™ Embedded V2000 Series Processors EmbeddedPI-FP6_1.0.0.6
- AMD AMD Ryzen™ Embedded V3000 Series Processors EmbeddedPI-FP7r2_0080
- AMD AMD Radeon™ RX 5000 Series Graphics Products AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)
- AMD AMD Radeon™ PRO W5000 Series Graphics Products AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)
- AMD AMD Radeon™ PRO W6000 Series Graphics Products AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)
- AMD AMD Radeon™ RX 6000 Series Graphics Products AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 8 mo ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.1 | 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 |
| CNA | 4.0 | 7.1 | 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/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 |
Affected products
- AMD AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors
- AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics
- AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors
- AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
- AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
- AMD AMD Ryzen™ 3000 Series Desktop Processors
- AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics
- AMD AMD Ryzen™ 4000 Series Desktop Processors
- AMD AMD Ryzen™ 5000 Series Desktop Processors
- AMD AMD Ryzen™ Embedded R1000 Series Processors
- AMD AMD Ryzen™ Embedded R2000 Series Processors
- AMD AMD Ryzen™ Embedded 5000 Series Processors
- AMD AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Raven Ridge")
- AMD AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Picasso")
- AMD AMD Ryzen™ Embedded V2000 Series Processors
- AMD AMD Ryzen™ Embedded V3000 Series Processors
- AMD AMD Radeon™ RX 5000 Series Graphics Products
- AMD AMD Radeon™ PRO W5000 Series Graphics Products
- AMD AMD Radeon™ PRO W6000 Series Graphics Products
- AMD AMD Radeon™ RX 6000 Series Graphics Products
- AMD AMD Radeon™ PRO V520
- AMD AMD Radeon™ PRO V620
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
References
Sources
- CVE List CVE-2021-26381
- NVD CVE-2021-26381
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