CVE-2024-50082

Kernel crash via stale waitqueue entry access

Published Oct 29, 2024 · Updated Aug 5, 2026

Use-after-free in affected Linux kernel versions allows local users to crash the kernel through concurrent block I/O. rq_qos_wake_function deletes a stack-backed waitqueue entry before calling wake_up_process, allowing rq_qos_wait to return and invalidate data->task. An unprivileged local user able to generate concurrent writes, fsync calls, or hole punching on an affected block device can trigger a kernel oops and corrupt kernel state.

CVSS severity7.8
High
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

Use-after-free in affected Linux kernel versions allows local users to crash the kernel through concurrent block I/O. rq_qos_wake_function deletes a stack-backed waitqueue entry before calling wake_up_process, allowing rq_qos_wait to return and invalidate data->task. An unprivileged local user able to generate concurrent writes, fsync calls, or hole punching on an affected block device can trigger a kernel oops and corrupt kernel state.

The record

CVE
CVE-2024-50082
Published
Oct 29, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 29, 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=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <04f283fc16c8d5db641b6bffd2d8310aa7eccebc
  2. Affected versionversion=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <3bc6d0f8b70a9101456cf02ab99acb75254e1852
  3. Affected versionversion=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <455a469758e57a6fe070e3e342db12e4a629e0eb
  4. Affected versionversion=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <4c5b123ab289767afe940389dbb963c5c05e594e
  5. Affected versionversion=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <b5e900a3612b69423a0e1b0ab67841a1fb4af80f
  6. Affected versionversion=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <d04b72c9ef2b0689bfc1057d21c4aeed087c329f
  7. Affected versionversion=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <e972b08b91ef48488bae9789f03cfedb148667fb
  8. Affected versionversion=4.19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <04f283fc16c8d5db641b6bffd2d8310aa7eccebc; version=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <3bc6d0f8b70a9101456cf02ab99acb75254e1852; version=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <455a469758e57a6fe070e3e342db12e4a629e0eb; version=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <4c5b123ab289767afe940389dbb963c5c05e594e; version=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <b5e900a3612b69423a0e1b0ab67841a1fb4af80f; version=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <d04b72c9ef2b0689bfc1057d21c4aeed087c329f; version=38cfb5a45ee013bfab5d1ae4c4738815e744b440 <e972b08b91ef48488bae9789f03cfedb148667fb; version=4.19

Published CVSS scores

7.8Linux kernel CNACVSS: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

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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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application 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

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Your stack

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