CVE-2024-35874

Kernel crash via AIO wait-queue race

Published May 19, 2024 · Updated Aug 5, 2026

NULL pointer dereference in Linux kernel 6.8 through 6.8.4 allows local users to crash the system through asynchronous I/O. A race between finish_wait() and aio_complete() lets finish_wait() skip the wait-queue lock before wakeup finishes, so the completion path uses an overwritten task_struct pointer. Low-privileged local access and successful timing of the AIO completion race are required; exploitation causes a kernel crash.

CVSS severity7.8
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux kernel 6.8 through 6.8.4 allows local users to crash the system through asynchronous I/O. A race between finish_wait() and aio_complete() lets finish_wait() skip the wait-queue lock before wakeup finishes, so the completion path uses an overwritten task_struct pointer. Low-privileged local access and successful timing of the AIO completion race are required; exploitation causes a kernel crash.

The record

CVE
CVE-2024-35874
Published
May 19, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 19, 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=6.8
  2. Affected versionversion=71eb6b6b0ba93b1467bccff57b5de746b09113d2 <9678bcc6234d83759fe091c197f5017a32b468da
  3. Affected versionversion=71eb6b6b0ba93b1467bccff57b5de746b09113d2 <caeb4b0a11b3393e43f7fa8e0a5a18462acc66bd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=71eb6b6b0ba93b1467bccff57b5de746b09113d2 <9678bcc6234d83759fe091c197f5017a32b468da; version=71eb6b6b0ba93b1467bccff57b5de746b09113d2 <caeb4b0a11b3393e43f7fa8e0a5a18462acc66bd

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8Linux 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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application 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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