CVE-2022-28388

Local system crash via transmit-path double free

Published Apr 3, 2022 · Updated May 5, 2025

A double free in the Linux kernel through 5.17.1 allows local users to crash the system through the 8 Devices USB2CAN transmit path. When usb_submit_urb() fails, usb_8dev_start_xmit() performs cleanup that frees a socket buffer already released by the CAN echo-buffer functions. The affected path requires local low-privileged access and use of the 8 Devices USB2CAN interface, and the documented consequence is a system crash.

CVSS severity5.5
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A double free in the Linux kernel through 5.17.1 allows local users to crash the system through the 8 Devices USB2CAN transmit path. When usb_submit_urb() fails, usb_8dev_start_xmit() performs cleanup that frees a socket buffer already released by the CAN echo-buffer functions. The affected path requires local low-privileged access and use of the 8 Devices USB2CAN interface, and the documented consequence is a system crash.

The record

CVE
CVE-2022-28388
Published
Apr 3, 2022
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-415, T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 3, 2022CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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