CVE-2024-50059

Kernel use-after-free via Switchtec teardown race

Published Oct 21, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel Switchtec NTB driver allows local users with administrative privileges to cause unspecified impact during module removal. switchtec_ntb_remove frees sndev without first canceling check_link_status_work, allowing the worker to dereference sndev after it is freed. Reachability requires a configured Switchtec NTB device, the ntb_hw_switchtec driver, and sufficient privilege to remove the module.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
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 kernel Switchtec NTB driver allows local users with administrative privileges to cause unspecified impact during module removal. switchtec_ntb_remove frees sndev without first canceling check_link_status_work, allowing the worker to dereference sndev after it is freed. Reachability requires a configured Switchtec NTB device, the ntb_hw_switchtec driver, and sufficient privilege to remove the module.

The record

CVE
CVE-2024-50059
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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?

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

  1. Affected versionversion=4.16
  2. Affected versionversion=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <177925d9c8715a897bb79eca62628862213ba956
  3. Affected versionversion=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <3ae45be8492460a35b5aebf6acac1f1d32708946
  4. Affected versionversion=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <5126d8f5567f49b52e21fca320eaa97977055099
  5. Affected versionversion=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <92728fceefdaa2a0a3aae675f86193b006eeaa43
  6. Affected versionversion=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <b650189687822b705711f0567a65a164a314d8df
  7. Affected versionversion=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <e51aded92d42784313ba16c12f4f88cc4f973bbb
  8. Affected versionversion=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <fa840ba4bd9f3bad7f104e5b32028ee73af8b3dd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=4.16; version=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <177925d9c8715a897bb79eca62628862213ba956; version=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <3ae45be8492460a35b5aebf6acac1f1d32708946; version=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <5126d8f5567f49b52e21fca320eaa97977055099; version=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <92728fceefdaa2a0a3aae675f86193b006eeaa43; version=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <b650189687822b705711f0567a65a164a314d8df; version=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <e51aded92d42784313ba16c12f4f88cc4f973bbb; version=d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 <fa840ba4bd9f3bad7f104e5b32028ee73af8b3dd

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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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