CVE-2021-43976

4.6 MEDIUM 0.7% exploit odds Fix listed

What it is

In the Linux kernel through 5.15.2, mwifiex_usb_recv in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker (who can connect a crafted USB device) to cause a denial of service (skb_over_panic).

At a glance

Exploitability: Can be exploited with physical access without logging in. High risk of service disruption.
Exploit odds: 0.7% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2021-11-17 17:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 04:11 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.7% in the next 30 days (EPSS).
Severity: 4.6 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2021-11-17 17:15 UTC
Last modified: 2026-06-17 04:11 UTC
Exploit probability: 0.7% · EPSS, next 30 days
Record status: Modified

Affected

Linux Kernel ≤ 5.15.2
Fedoraproject Fedora 34
Fedoraproject Fedora 35
Debian Linux 9.0
Debian Linux 10.0
Debian Linux 11.0
Netapp Cloud Backup
Netapp h300s Firmware

Attack profile CVSS 3.1 · 4.6

Attack vector: Physical
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-43976.md and follow it. Check whether this project is affected by CVE-2021-43976. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record