// For flags

CVE-2021-3501

kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run

Severity Score

7.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.

Se encontró un fallo en el kernel de Linux en versiones anteriores a 5.12. El valor de internal.ndata, en la API de KVM, es asignado a un índice de matriz, que puede ser actualizado por un proceso de usuario en cualquier momento, lo que podría conllevar a una escritura fuera de límites. La mayor amenaza de esta vulnerabilidad es la integridad de los datos y la disponibilidad del sistema

A flaw was found in the Linux kernel. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-04-15 CVE Reserved
  • 2021-05-05 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
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Virtualization
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4.0
Search vendor "Redhat" for product "Virtualization" and version "4.0"
-
Affected
in Redhat
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Enterprise Linux
Search vendor "Redhat" for product "Enterprise Linux"
8.0
Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"
-
Safe
Redhat
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Virtualization Host
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4.0
Search vendor "Redhat" for product "Virtualization Host" and version "4.0"
-
Affected
in Redhat
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Enterprise Linux
Search vendor "Redhat" for product "Enterprise Linux"
8.0
Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"
-
Safe
Netapp
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H300s Firmware
Search vendor "Netapp" for product "H300s Firmware"
--
Affected
in Netapp
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H300s
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--
Safe
Netapp
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H500s Firmware
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--
Affected
in Netapp
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H500s
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--
Safe
Netapp
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H700s Firmware
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--
Affected
in Netapp
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H700s
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--
Safe
Netapp
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H300e Firmware
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--
Affected
in Netapp
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H300e
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--
Safe
Netapp
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H500e Firmware
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--
Affected
in Netapp
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H500e
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--
Safe
Netapp
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H700e Firmware
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--
Affected
in Netapp
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H700e
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--
Safe
Netapp
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H410s Firmware
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--
Affected
in Netapp
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H410s
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--
Safe
Netapp
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H410c Firmware
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--
Affected
in Netapp
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H410c
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--
Safe
Linux
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Linux Kernel
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< 5.12
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-
Affected
Redhat
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Enterprise Linux
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8.0
Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"
-
Affected
Redhat
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Enterprise Linux For Real Time
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8
Search vendor "Redhat" for product "Enterprise Linux For Real Time" and version "8"
-
Affected
Redhat
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Enterprise Linux For Real Time For Nfv
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8
Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv" and version "8"
-
Affected
Redhat
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Enterprise Linux For Real Time For Nfv Tus
Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv Tus"
8.4
Search vendor "Redhat" for product "Enterprise Linux For Real Time For Nfv Tus" and version "8.4"
-
Affected
Redhat
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Enterprise Linux For Real Time Tus
Search vendor "Redhat" for product "Enterprise Linux For Real Time Tus"
8.4
Search vendor "Redhat" for product "Enterprise Linux For Real Time Tus" and version "8.4"
-
Affected
Fedoraproject
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Fedora
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33
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-
Affected
Netapp
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Cloud Backup
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--
Affected
Netapp
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Solidfire Baseboard Management Controller Firmware
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--
Affected