CVE-2024-44942Public exploit

Kernel crash via malformed F2FS inline inode

Published Aug 26, 2024 · Updated Aug 5, 2026

Denial of service in Linux kernel F2FS allows local users to crash the kernel by mounting a crafted filesystem image. Background garbage collection migrates a direct-node block even when the inode carries F2FS_INLINE_DATA, causing dirty-page writeback to reach f2fs_bug_on() in f2fs_write_inline_data. Exploitation requires local access and the ability to mount an attacker-supplied F2FS image; the demonstrated result is a kernel panic.

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

Denial of service in Linux kernel F2FS allows local users to crash the kernel by mounting a crafted filesystem image. Background garbage collection migrates a direct-node block even when the inode carries F2FS_INLINE_DATA, causing dirty-page writeback to reach f2fs_bug_on() in f2fs_write_inline_data. Exploitation requires local access and the ability to mount an attacker-supplied F2FS image; the demonstrated result is a kernel panic.

The record

CVE
CVE-2024-44942
Published
Aug 26, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.8
  2. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <26c07775fb5dc74351d1c3a2bc3cdf609b03e49f
  3. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <ae00e6536a2dd54b64b39e9a39548870cf835745
  4. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <fc01008c92f40015aeeced94750855a7111b6929

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.8; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <26c07775fb5dc74351d1c3a2bc3cdf609b03e49f; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <ae00e6536a2dd54b64b39e9a39548870cf835745; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <fc01008c92f40015aeeced94750855a7111b6929

Published CVSS scores

6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8UbuntuCVSS: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

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

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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 exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

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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