CVE-2024-41083

Kernel crash via stale netfs folio mapping

Published Jul 29, 2024 · Updated May 11, 2026

NULL pointer dereference in Linux kernel 6.8 allows local users to crash the kernel through concurrent direct and memory-mapped writes. After locking a folio, netfs_page_mkwrite dereferences its mapping without rechecking whether direct-I/O invalidation cleared it. Triggering requires local low-privileged access and a race between direct-I/O completion and writes to the same memory-mapped folio.

CVSS severity5.5
Medium
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 allows local users to crash the kernel through concurrent direct and memory-mapped writes. After locking a folio, netfs_page_mkwrite dereferences its mapping without rechecking whether direct-I/O invalidation cleared it. Triggering requires local low-privileged access and a race between direct-I/O completion and writes to the same memory-mapped folio.

The record

CVE
CVE-2024-41083
Published
Jul 29, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=102a7e2c598c22bd2621fa97eb1c93c89d469a12 <3473eb87afd402e415a8ca885b284ea0420dde25
  2. Affected versionversion=102a7e2c598c22bd2621fa97eb1c93c89d469a12 <a81c98bfa40c11f8ea79b5a9b3f5fda73bfbb4d2
  3. Affected versionversion=6.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=102a7e2c598c22bd2621fa97eb1c93c89d469a12 <3473eb87afd402e415a8ca885b284ea0420dde25; version=102a7e2c598c22bd2621fa97eb1c93c89d469a12 <a81c98bfa40c11f8ea79b5a9b3f5fda73bfbb4d2; version=6.8

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

T1499Endpoint Denial of Service

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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