CVE-2024-46781

Kernel crash via uncleared rollforward inode list

Published Sep 18, 2024 · Updated Aug 5, 2026

Use-after-free in Linux nilfs2 before 6.11 allows local users to trigger invalid inode access during mount-time rollforward recovery. The failure path releases the recovery root without first removing recovered inodes from ns_dirty_files, leaving stale entries that later reference freed objects. Reachability requires local low-privilege access and a nilfs2 volume with partial dsync logs plus a recovery error; the documented consequence is kernel service interruption.

CVSS severity7.8
High
EPSS probability0.25%
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 Linux nilfs2 before 6.11 allows local users to trigger invalid inode access during mount-time rollforward recovery. The failure path releases the recovery root without first removing recovered inodes from ns_dirty_files, leaving stale entries that later reference freed objects. Reachability requires local low-privilege access and a nilfs2 volume with partial dsync logs plus a recovery error; the documented consequence is kernel service interruption.

The record

CVE
CVE-2024-46781
Published
Sep 18, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 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=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <07e4dc2fe000ab008bcfe90be4324ef56b5b4355
  2. Affected versionversion=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <1cf1f7e8cd47244fa947d357ef1f642d91e219a3
  3. Affected versionversion=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <35a9a7a7d94662146396199b0cfd95f9517cdd14
  4. Affected versionversion=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <5787fcaab9eb5930f5378d6a1dd03d916d146622
  5. Affected versionversion=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <8e2d1e9d93c4ec51354229361ac3373058529ec4
  6. Affected versionversion=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <9d8c3a585d564d776ee60d4aabec59b404be7403
  7. Affected versionversion=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <ca92c4bff2833cb30d493b935168d6cccd5c805d
  8. Affected versionversion=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <da02f9eb333333b2e4f25d2a14967cff785ac82e
  9. Affected versionversion=2.6.30

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <07e4dc2fe000ab008bcfe90be4324ef56b5b4355; version=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <1cf1f7e8cd47244fa947d357ef1f642d91e219a3; version=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <35a9a7a7d94662146396199b0cfd95f9517cdd14; version=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <5787fcaab9eb5930f5378d6a1dd03d916d146622; version=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <8e2d1e9d93c4ec51354229361ac3373058529ec4; version=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <9d8c3a585d564d776ee60d4aabec59b404be7403; version=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <ca92c4bff2833cb30d493b935168d6cccd5c805d; version=0f3e1c7f23f8a6f8224fa1d275381f6d9279ad4b <da02f9eb333333b2e4f25d2a14967cff785ac82e; version=2.6.30

Published CVSS scores

5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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