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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-47476 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: comedi: ni_usb6501: fix NULL-deref in command paths The driver uses endpoint-sized USB transfer buffers but had no sanity checks on the sizes. This can lead to zero-size-pointer dereferences or overflowed transfer buffers in ni6501_port_command() and ni6501_counter_command() if a (malicious) device has smaller max-packet sizes than expected (or when doing descriptor fuzz testing). Add the missing sanity checks to probe().


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/4a9d43cb5d5f39fa39fc1da438517004cc95f7ea CVE, kernel.org Patch 
https://git.kernel.org/stable/c/58478143771b20ab219937b1c30a706590a59224 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/907767da8f3a925b060c740e0b5c92ea7dbec440 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/aa39738423503825625853b643b9e99d11c23816 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/b0156b7c9649d8f55a2ce3d3258509f1b2a181c3 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/bc51111bf6e8e7b6cc94b133e4c291273a16acd1 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/d6a727a681a39ae4f73081a9bedb45d14f95bdd1 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/df7b1238f3b599a0b9284249772cdfd1ea83a632 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1 CVE, kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47476
NVD Published Date:
05/22/2024
NVD Last Modified:
04/02/2025
Source:
kernel.org