CVE-2026-72078

Service interruption via unchecked USB endpoint type

Published Aug 15, 2026 · Updated Aug 15, 2026

Improper endpoint validation in the Linux kernel ims-pcu driver allows physically proximate attackers to cause a service interrupt via USB. The control-interface probe passes its first endpoint to usb_fill_int_urb() without confirming that it is an interrupt IN endpoint. A device advertising another endpoint type can trigger kernel warnings or undefined behavior, with system instability or denial of service reported.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper endpoint validation in the Linux kernel ims-pcu driver allows physically proximate attackers to cause a service interrupt via USB. The control-interface probe passes its first endpoint to usb_fill_int_urb() without confirming that it is an interrupt IN endpoint. A device advertising another endpoint type can trigger kernel warnings or undefined behavior, with system instability or denial of service reported.

The record

CVE
CVE-2026-72078
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-1287, T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.10
  2. Affected versionversion=628329d52474323938a03826941e166bc7c8eff4 <5b96b4da96313dd799a3a40dcfd598d2e2c19217
  3. Affected versionversion=628329d52474323938a03826941e166bc7c8eff4 <5de5075a1f26166f172b6687cb66810a9b61e3eb
  4. Affected versionversion=628329d52474323938a03826941e166bc7c8eff4 <7960d99332e03705ec622d92f31e0c77de8baac6
  5. Affected versionversion=628329d52474323938a03826941e166bc7c8eff4 <a630508a09b0c05f14bc0843ed409221a93751aa
  6. Affected versionversion=628329d52474323938a03826941e166bc7c8eff4 <aa1885f87e60c80e59e50ffd5fb096bf02c83e05
  7. Affected versionversion=628329d52474323938a03826941e166bc7c8eff4 <baf56975806534268e24acf9a8abb1c447ce11e9
  8. Affected versionversion=628329d52474323938a03826941e166bc7c8eff4 <c8d3d83f2eaaf7659de76e8d44e8fc88ee346042
  9. Affected versionversion=628329d52474323938a03826941e166bc7c8eff4 <cbfa059dfb48b9aa322e34fd44a093d9ca29ad7e

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.10; version=628329d52474323938a03826941e166bc7c8eff4 <5b96b4da96313dd799a3a40dcfd598d2e2c19217; version=628329d52474323938a03826941e166bc7c8eff4 <5de5075a1f26166f172b6687cb66810a9b61e3eb; version=628329d52474323938a03826941e166bc7c8eff4 <7960d99332e03705ec622d92f31e0c77de8baac6; version=628329d52474323938a03826941e166bc7c8eff4 <a630508a09b0c05f14bc0843ed409221a93751aa; version=628329d52474323938a03826941e166bc7c8eff4 <aa1885f87e60c80e59e50ffd5fb096bf02c83e05; version=628329d52474323938a03826941e166bc7c8eff4 <baf56975806534268e24acf9a8abb1c447ce11e9; version=628329d52474323938a03826941e166bc7c8eff4 <c8d3d83f2eaaf7659de76e8d44e8fc88ee346042; version=628329d52474323938a03826941e166bc7c8eff4 <cbfa059dfb48b9aa322e34fd44a093d9ca29ad7e

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.4Amazon LinuxCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
2.4SUSECVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1287Improper Validation of Specified Type of Input
T1200Hardware Additions

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

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Your stack

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