CVE-2021-43976
kernel: mwifiex_usb_recv() in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker to cause DoS via crafted USB device
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 31, 2021
Updated · June 28, 2026
Description
A denial of service flaw was found in mwifiex_usb_recv in drivers/net/wireless/marvell/mwifiex/usb.c in the usb subsystem of the Linux kernel. This is due to a missing clean-up for a malfunctioning usb device with an unknown recv_type.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 4.6CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-459 · Incomplete Cleanup