CVE-2021-38204

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-08 · updated 2026-06-17
Weakness: CWE-416

Description

drivers/usb/host/max3421-hcd.c in the Linux kernel before 5.13.6 allows physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations.

Affected products

Debian Linux: 9.0
Linux kernel: before 5.13.6 — fixed in 5.13.6

How to fix

Upgrade to a fixed version: Linux kernel 5.13.6. Check the vendor advisory for mitigations.

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.6
https://github.com/torvalds/linux/commit/b5fdf5c6e6bee35837e160c00ac89327bdad031b
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.6
https://github.com/torvalds/linux/commit/b5fdf5c6e6bee35837e160c00ac89327bdad031b
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html

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