CVE-2021-26381 (GCVE-0-2021-26381)

Vulnerability from cvelistv5 – Published: 2026-02-10 19:47 – Updated: 2026-02-26 14:44
VLAI
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.
Severity
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
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
AMD
References
Impacted products
Vendor Product Version
AMD AMD Ryzen™ Threadripper™ PRO 3000 WX-Series Processors Unaffected: ChagallWSPI-sWRX8 1.0.0.2/ CastlePeakWSPI-sWRX8 1.0.0.9
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AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics Unaffected: ComboAM4v2 PI 1.2.0.5
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AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors Unaffected: ChagallWSPI-sWRX8 1.0.0.1
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AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics Unaffected: PicassoPI-FP5 1.0.0.E
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AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics Unaffected: CezannePI-FP6 1.0.0.8
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AMD AMD Ryzen™ 3000 Series Desktop Processors Unaffected: ComboAM4PI 1.0.0.9/ ComboAM4 V2 PI 1.2.0.8
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AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics Unaffected: RenoirPI-FP6 1.0.0.8
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AMD AMD Ryzen™ 4000 Series Desktop Processors Unaffected: ComboAM4v2 PI 1.2.0.5
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AMD AMD Ryzen™ 5000 Series Desktop Processors Unaffected: ComboAM4 V2 PI 1.2.0.8
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AMD AMD Ryzen™ Embedded R1000 Series Processors Unaffected: EmbeddedPI-FP5 1.2.0.A
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AMD AMD Ryzen™ Embedded R2000 Series Processors Unaffected: EmbeddedR2KPI-FP5_1.0.0.2
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AMD AMD Ryzen™ Embedded 5000 Series Processors Unaffected: EmbAM4PI 1.0.0.2
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AMD AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Raven Ridge") Unaffected: EmbeddedPI-FP5 1.2.0.A
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AMD AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Picasso") Unaffected: 120A
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AMD AMD Ryzen™ Embedded V2000 Series Processors Unaffected: EmbeddedPI-FP6_1.0.0.6
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AMD AMD Ryzen™ Embedded V3000 Series Processors Unaffected: EmbeddedPI-FP7r2_0080
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AMD AMD Radeon™ RX 5000 Series Graphics Products Unaffected: AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)
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AMD AMD Radeon™ PRO W5000 Series Graphics Products Unaffected: AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)
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AMD AMD Radeon™ PRO W6000 Series Graphics Products Unaffected: AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)
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AMD AMD Radeon™ RX 6000 Series Graphics Products Unaffected: AMD Software: Adrenalin Edition 25.4.1 (24.30.31.08), AMD Software: PRO Edition 25.Q2(25.10.10)
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AMD AMD Radeon™ PRO V520 Unaffected: Contact Your AMD Customer Engineering Represenatative
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AMD AMD Radeon™ PRO V620 Unaffected: Contact Your AMD Customer Engineering Represenatative
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Date Public
2026-02-11 14:10
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number of pages, potentially resulting in kernel memory corruption.\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770  Allocation of Resources Without Limits or Throttling\"}]}], \"providerMetadata\": {\"orgId\": \"b58fc414-a1e4-4f92-9d70-1add41838648\", \"shortName\": \"AMD\", \"dateUpdated\": \"2026-02-11T14:11:54.692Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-26381\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-26T14:44:28.708Z\", \"dateReserved\": \"2021-01-29T21:24:26.159Z\", \"assignerOrgId\": \"b58fc414-a1e4-4f92-9d70-1add41838648\", \"datePublished\": \"2026-02-10T19:47:26.356Z\", \"assignerShortName\": \"AMD\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.