CVE-2021-26381
Improper system call parameter validation in the Trusted OS may allow a malicious driver to...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2021-26381- CVSS 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 - Weakness
- CWE-770
- Updated
- 2026-11-02
EUVDEUVD-2021-13187
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.
- Record
EUVD-2021-13187- CVSS 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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-99jj-mrwr-6crm
Improper system call parameter validation in the Trusted OS may allow a malicious driver to...
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.
- Record
GHSA-99jj-mrwr-6crm- CVSS 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/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 - Weakness
- CWE-770
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2021-26381- CVSS 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/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 - Weakness
- CWE-770
- Updated
- 2026-11-02
Affected products
- amd athlon™ 3000 series mobile processors with radeon™ graphics
- amd radeon™ pro v520
- amd radeon™ pro v620
- amd radeon™ pro w5000 series graphics products
- amd radeon™ pro w6000 series graphics products
- amd radeon™ rx 5000 series graphics products
- amd radeon™ rx 6000 series graphics products
- amd ryzen™ 3000 series desktop processors
- amd ryzen™ 4000 series desktop processors
- amd ryzen™ 4000 series mobile processors with radeon™ graphics
- amd ryzen™ 5000 series desktop processors
- amd ryzen™ 5000 series desktop processors with radeon™ graphics
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- amd ryzen™ 5000 series mobile processors with radeon™ graphics
- amd ryzen™ embedded 5000 series processors
- amd ryzen™ embedded r1000 series processors
- amd ryzen™ embedded r2000 series processors
- amd ryzen™ embedded v1000 series processors (formerly codenamed "picasso")
- amd ryzen™ embedded v1000 series processors (formerly codenamed "raven ridge")
- amd ryzen™ embedded v2000 series processors
- amd ryzen™ embedded v3000 series processors
- amd ryzen™ threadripper™ pro 3000 wx-series processors
- amd ryzen™ threadripper™ pro 5000 wx-series processors
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26381 is a high vulnerability (CVSS 7.1) in Amd Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics, published February 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. No source names a fixed version.