CVE-2022-50716

Kernel invalid read via timed-out USB command

Published Dec 24, 2025 · Updated Dec 24, 2025

Use-after-free in the Linux ar5523 Wi-Fi driver allows attackers to trigger an invalid kernel read when a USB command times out. On timeout, ar5523_probe() frees the device structure without canceling the submitted command URB, so ar5523_cmd_tx_cb() later dereferences freed memory. Reachability requires the ar5523 driver to probe an affected USB wireless device and the URB callback to complete after teardown; the published result is an eight-byte freed-memory read.

CVSS severityUnavailable
Unscored
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux ar5523 Wi-Fi driver allows attackers to trigger an invalid kernel read when a USB command times out. On timeout, ar5523_probe() frees the device structure without canceling the submitted command URB, so ar5523_cmd_tx_cb() later dereferences freed memory. Reachability requires the ar5523 driver to probe an affected USB wireless device and the URB callback to complete after teardown; the published result is an eight-byte freed-memory read.

The record

CVE
CVE-2022-50716
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 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?

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  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <340524ae7b53a72cf5d9e7bd7790433422b3b12f
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3eca9697c2f3905dea3ad2fc536ebaa1fbd735bd
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <601ae89375033ac4870c086e24ba03f235d38e55
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6447beefd21326a3f4719ec2ea511df797f6c820
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7360b323e0343ea099091d4ae09576dbe1f09516
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8af52492717e3538eba3f81d012b1476af8a89a6
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9aef34e1ae35a87e5f6a22278c17823b7ce64c88
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b6702a942a069c2a975478d719e98d83cdae1797
  9. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c9ba3fbf6a488da6cad1d304c5234bd8d729eba3

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <340524ae7b53a72cf5d9e7bd7790433422b3b12f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3eca9697c2f3905dea3ad2fc536ebaa1fbd735bd; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <601ae89375033ac4870c086e24ba03f235d38e55; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6447beefd21326a3f4719ec2ea511df797f6c820; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7360b323e0343ea099091d4ae09576dbe1f09516; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8af52492717e3538eba3f81d012b1476af8a89a6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9aef34e1ae35a87e5f6a22278c17823b7ce64c88; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b6702a942a069c2a975478d719e98d83cdae1797; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c9ba3fbf6a488da6cad1d304c5234bd8d729eba3

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

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Technologies

Your stack

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Your stack

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