CVE-2025-71107

Kernel crash via incomplete F2FS node-page reads

Published Jan 14, 2026 · Updated Jan 14, 2026

Race condition in Linux Kernel F2FS allows local users to crash the kernel during filesystem unmount by racing node-page reads. The f2fs_put_super() teardown path can finish while F2FS_RD_NODE page reads remain outstanding, leaving teardown to dereference invalid state. Reaching the failure requires local privileges to unmount an affected F2FS filesystem and a timing window with unfinished node reads; the demonstrated consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Linux Kernel F2FS allows local users to crash the kernel during filesystem unmount by racing node-page reads. The f2fs_put_super() teardown path can finish while F2FS_RD_NODE page reads remain outstanding, leaving teardown to dereference invalid state. Reaching the failure requires local privileges to unmount an affected F2FS filesystem and a timing window with unfinished node reads; the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2025-71107
Published
Jan 14, 2026
Updated
Jan 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 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=0e2577074b459bba7f4016f4d725ede37d48bb22
  2. Affected versionversion=20872584b8c0b006c007da9588a272c9e28d2e18 <0b36fae23621a09e772c8adf918b9011158f8511
  3. Affected versionversion=20872584b8c0b006c007da9588a272c9e28d2e18 <297baa4aa263ff8f5b3d246ee16a660d76aa82c4
  4. Affected versionversion=20872584b8c0b006c007da9588a272c9e28d2e18 <3b15d5f12935e9e25f9a571e680716bc9ee61025
  5. Affected versionversion=20872584b8c0b006c007da9588a272c9e28d2e18 <c3031cf2b61f1508662fc95ef9ad505cb0882a5f
  6. Affected versionversion=6.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=0e2577074b459bba7f4016f4d725ede37d48bb22; version=20872584b8c0b006c007da9588a272c9e28d2e18 <0b36fae23621a09e772c8adf918b9011158f8511; version=20872584b8c0b006c007da9588a272c9e28d2e18 <297baa4aa263ff8f5b3d246ee16a660d76aa82c4; version=20872584b8c0b006c007da9588a272c9e28d2e18 <3b15d5f12935e9e25f9a571e680716bc9ee61025; version=20872584b8c0b006c007da9588a272c9e28d2e18 <c3031cf2b61f1508662fc95ef9ad505cb0882a5f; version=6.5

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.

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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-476NULL Pointer Dereference
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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