CVE-2026-80830Hinoki check available

Kernel use-after-free via USB wakeup race

Published Sep 4, 2026 · Updated Sep 4, 2026

Use-after-free in the Linux kernel USB core allows attackers to dereference freed device state during concurrent wakeup and disconnect handling. usb_wakeup_notification() reads device state from an xHCI interrupt without taking the lock used by hub_disconnect(), allowing the latter to free that state concurrently. Reachability requires xHCI wakeup-notification IRQ handling to overlap USB hub disconnection; the Linux CNA has not specified a consequence beyond the freed-memory dereference.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in the Linux kernel USB core allows attackers to dereference freed device state during concurrent wakeup and disconnect handling. usb_wakeup_notification() reads device state from an xHCI interrupt without taking the lock used by hub_disconnect(), allowing the latter to free that state concurrently. Reachability requires xHCI wakeup-notification IRQ handling to overlap USB hub disconnection; the Linux CNA has not specified a consequence beyond the freed-memory dereference.

The record

CVE
CVE-2026-80830
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <5.10.269
  2. Affected versionversion=0 <5.15.220
  3. Affected versionversion=0 <6.1.187
  4. Affected versionversion=0 <6.12.108
  5. Affected versionversion=0 <6.18.49
  6. Affected versionversion=0 <6.6.156
  7. Affected versionversion=0 <7.1.13
  8. Affected versionversion=0 <7.2.3
  9. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <04ab260407972e631c86f2bc576cd8e64d65b325
  10. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <71cfda2fdf78041a01e9d94143baa79feabbdbf6
  11. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7c48aa0c1e79116b8af4b988d16ee29b427d6491
  12. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <960ca456faf61824b178f47967340300b24183db
  13. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <975ef630393c07fcbebf94f4d97043161b77a6ce
  14. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a7a16167991c88016acef720927400404039d850
  15. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bf2288583b4e072bdff17a233963619e4bc7a8b5
  16. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d80b946804674069db7ce6657319a71cf8eeaa5a
  17. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e263e18a9e7b1ff3e7301f0801c6ff87c31adfb6

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=0 <5.10.269; version=0 <5.15.220; version=0 <6.1.187; version=0 <6.12.108; version=0 <6.18.49; version=0 <6.6.156; version=0 <7.1.13; version=0 <7.2.3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <04ab260407972e631c86f2bc576cd8e64d65b325; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <71cfda2fdf78041a01e9d94143baa79feabbdbf6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7c48aa0c1e79116b8af4b988d16ee29b427d6491; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <960ca456faf61824b178f47967340300b24183db; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <975ef630393c07fcbebf94f4d97043161b77a6ce; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a7a16167991c88016acef720927400404039d850; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bf2288583b4e072bdff17a233963619e4bc7a8b5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d80b946804674069db7ce6657319a71cf8eeaa5a; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e263e18a9e7b1ff3e7301f0801c6ff87c31adfb6

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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