CVE-2024-39469

Filesystem corruption and hang via failed directory reads

Published Jun 25, 2024 · Updated Aug 5, 2026

Improper error handling in Linux NILFS2 allows local users to corrupt a file system or hang its log writer thread during directory reads. nilfs_empty_dir() treats a failed folio or page read, including nilfs_check_folio() failure, as an empty directory instead of returning false. Reaching the flaw requires a NILFS2 directory read failure; the hang additionally requires a corrupted directory inode i_size value.

CVSS severity7.1
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper error handling in Linux NILFS2 allows local users to corrupt a file system or hang its log writer thread during directory reads. nilfs_empty_dir() treats a failed folio or page read, including nilfs_check_folio() failure, as an empty directory instead of returning false. Reaching the flaw requires a NILFS2 directory read failure; the hang additionally requires a corrupted directory inode i_size value.

The record

CVE
CVE-2024-39469
Published
Jun 25, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 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=2.6.30
  2. Affected versionversion=2ba466d74ed74f073257f86e61519cb8f8f46184 <11a2edb70356a2202dcb7c9c189c8356ab4752cd
  3. Affected versionversion=2ba466d74ed74f073257f86e61519cb8f8f46184 <129dcd3e7d036218db3f59c82d82004b9539ed82
  4. Affected versionversion=2ba466d74ed74f073257f86e61519cb8f8f46184 <2ac8a2fe22bdde9eecce2a42cf5cab79333fb428
  5. Affected versionversion=2ba466d74ed74f073257f86e61519cb8f8f46184 <405b71f1251e5ae865f53bd27c45114e6c83bee3
  6. Affected versionversion=2ba466d74ed74f073257f86e61519cb8f8f46184 <59f14875a96ef93f05b82ad3c980605f2cb444b5
  7. Affected versionversion=2ba466d74ed74f073257f86e61519cb8f8f46184 <7373a51e7998b508af7136530f3a997b286ce81c
  8. Affected versionversion=2ba466d74ed74f073257f86e61519cb8f8f46184 <c77ad608df6c091fe64ecb91f41ef7cb465587f1
  9. Affected versionversion=2ba466d74ed74f073257f86e61519cb8f8f46184 <d18b05eda7fa77f02114f15b02c009f28ee42346

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.30; version=2ba466d74ed74f073257f86e61519cb8f8f46184 <11a2edb70356a2202dcb7c9c189c8356ab4752cd; version=2ba466d74ed74f073257f86e61519cb8f8f46184 <129dcd3e7d036218db3f59c82d82004b9539ed82; version=2ba466d74ed74f073257f86e61519cb8f8f46184 <2ac8a2fe22bdde9eecce2a42cf5cab79333fb428; version=2ba466d74ed74f073257f86e61519cb8f8f46184 <405b71f1251e5ae865f53bd27c45114e6c83bee3; version=2ba466d74ed74f073257f86e61519cb8f8f46184 <59f14875a96ef93f05b82ad3c980605f2cb444b5; version=2ba466d74ed74f073257f86e61519cb8f8f46184 <7373a51e7998b508af7136530f3a997b286ce81c; version=2ba466d74ed74f073257f86e61519cb8f8f46184 <c77ad608df6c091fe64ecb91f41ef7cb465587f1; version=2ba466d74ed74f073257f86e61519cb8f8f46184 <d18b05eda7fa77f02114f15b02c009f28ee42346

Published CVSS scores

7.1CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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

T1499Endpoint Denial of Service

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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