CVE-2025-68805

Kernel compromise via stale FUSE request entry

Published Jan 13, 2026 · Updated Jan 13, 2026

Use-after-free in Linux Kernel 6.14 allows local users to corrupt kernel memory through FUSE-over-io_uring operations. The FUSE io_uring termination path frees a non-committed request without removing its processing-list node, leaving a stale entry. A local user able to create a user-namespace FUSE mount, access /dev/fuse, and enable FUSE-over-io_uring can disclose kernel data, corrupt kernel memory, or crash the host.

CVSS severity7.8
High
EPSS probability0.14%
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 Kernel 6.14 allows local users to corrupt kernel memory through FUSE-over-io_uring operations. The FUSE io_uring termination path frees a non-committed request without removing its processing-list node, leaving a stale entry. A local user able to create a user-namespace FUSE mount, access /dev/fuse, and enable FUSE-over-io_uring can disclose kernel data, corrupt kernel memory, or crash the host.

The record

CVE
CVE-2025-68805
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 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=6.14
  2. Affected versionversion=c090c8abae4b6b77a1bee116aa6c385456ebef96 <95c39eef7c2b666026c69ab5b30471da94ea2874
  3. Affected versionversion=c090c8abae4b6b77a1bee116aa6c385456ebef96 <a6d1f1ace16d0e777a85f84267160052d3499b6e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.14; version=c090c8abae4b6b77a1bee116aa6c385456ebef96 <95c39eef7c2b666026c69ab5b30471da94ea2874; version=c090c8abae4b6b77a1bee116aa6c385456ebef96 <a6d1f1ace16d0e777a85f84267160052d3499b6e

Published CVSS scores

7.8Linux KernelCVSS: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

T1068Exploitation for Privilege Escalation

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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