VULNERABILITY INTELLIGENCE

CVE-2021-47476

CVSS score4.6 MEDIUM
EPSS probability0.39%
CISA KEVNot currently listed
Published2024-05-22
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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().

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-476

Primary references