CVE-2026-46175Public exploit

Filesystem corruption via uncleared node-block marks

Published May 28, 2026 · Updated May 28, 2026

F2FS corruption in Linux Kernel 4.7 through 6.18.29 and 6.19 through 7.0.6 allows local users to alter stored data. During foreground garbage collection, __write_node_folio leaves dentry and fsync marks set on migrated node blocks, so recovery treats stale metadata as fsynced. Any local user able to write an F2FS volume can induce automatic FGGC under low free space; a later crash and remount can resurrect deleted inode metadata, fail the mount, or crash kernels built with CONFIG_F2FS_CHECK_FS.

CVSS severity7.1
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

F2FS corruption in Linux Kernel 4.7 through 6.18.29 and 6.19 through 7.0.6 allows local users to alter stored data. During foreground garbage collection, __write_node_folio leaves dentry and fsync marks set on migrated node blocks, so recovery treats stale metadata as fsynced. Any local user able to write an F2FS volume can induce automatic FGGC under low free space; a later crash and remount can resurrect deleted inode metadata, fail the mount, or crash kernels built with CONFIG_F2FS_CHECK_FS.

The record

CVE
CVE-2026-46175
Published
May 28, 2026
Updated
May 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1565.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=4.7
  2. Affected versionversion=da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f <8be551f538dc5b64183e27bd45a7a0795263f760
  3. Affected versionversion=da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f <c3e238bd1f56993f205ef83889d406dfeaf717a8
  4. Affected versionversion=da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f <e7c6d30169b03307d27c4479563df79c08f3a746

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.7; version=da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f <8be551f538dc5b64183e27bd45a7a0795263f760; version=da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f <c3e238bd1f56993f205ef83889d406dfeaf717a8; version=da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f <e7c6d30169b03307d27c4479563df79c08f3a746

Published CVSS scores

7.1kernel.orgCVSS: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 exploitPublished

Weakness, pattern, technique

T1565.001Stored Data Manipulation

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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