CVE-2022-28390

Service interruption via transmit-path double free

Published Apr 3, 2022 · Updated Aug 3, 2024

Double free in the Linux kernel through 5.17.1 allows local users to exhaust memory through an EMS CAN/USB transmit error. In ems_usb_start_xmit, a failed usb_submit_urb call enters an error path that frees the original socket buffer again after can_put_echo_skb and can_free_echo_skb have already released the original and cloned buffers. The path requires local use of an EMS CPC-USB/ARM7 CAN interface and a USB submission failure, and the bounded consequence is service interruption from memory exhaustion.

CVSS severity7.8
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Double free in the Linux kernel through 5.17.1 allows local users to exhaust memory through an EMS CAN/USB transmit error. In ems_usb_start_xmit, a failed usb_submit_urb call enters an error path that frees the original socket buffer again after can_put_echo_skb and can_free_echo_skb have already released the original and cloned buffers. The path requires local use of an EMS CPC-USB/ARM7 CAN interface and a USB submission failure, and the bounded consequence is service interruption from memory exhaustion.

The record

CVE
CVE-2022-28390
Published
Apr 3, 2022
Updated
Aug 3, 2024
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. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo