---
id: CVE-2025-68284
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  libceph: prevent potential out-of-bounds writes in handle_auth_session_key()

  The len field originates from untrusted network packets
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  libceph: prevent potential out-of-bounds writes in handle_auth_session_key()

  The len field originates from untrusted network packets. Boundary
  checks have been added t…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 <
    f22c55a20a2d9ffbbac57408d5d488cef8201e9d
  - >-
    Linux >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 <
    8dfcc56af28cffb8f25fb9be37b3acc61f2a3d09
  - >-
    Linux >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 <
    ccbccfba25e9aa395daaea156b5e7790910054c4
  - >-
    Linux >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 <
    5ef575834ca99f719d7573cdece9df2fe2b72424
  - >-
    Linux >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 <
    6920ff09bf911bc919cd7a6b7176fbdd1a6e6850
  - >-
    Linux >= 285ea34fc876aa0a2c5e65d310c4a41269e2e5f2 <
    7fce830ecd0a0256590ee37eb65a39cbad3d64fc
  - Linux 5.11
published: '2025-12-16'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:19:11.593'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-68284'
references:
  - url: 'https://git.kernel.org/stable/c/5ef575834ca99f719d7573cdece9df2fe2b72424'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6920ff09bf911bc919cd7a6b7176fbdd1a6e6850'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7fce830ecd0a0256590ee37eb65a39cbad3d64fc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8dfcc56af28cffb8f25fb9be37b3acc61f2a3d09'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ccbccfba25e9aa395daaea156b5e7790910054c4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f22c55a20a2d9ffbbac57408d5d488cef8201e9d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00588
epssPercentile: 0.47925
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-15T22:00:46.509216Z'
ingestedAt: '2026-10-13T19:43:28.849Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

libceph: prevent potential out-of-bounds writes in handle_auth_session_key()

The len field originates from untrusted network packets. Boundary
checks have been added to prevent potential out-of-bounds writes when
decrypting the connection secret or processing service tickets.

[ idryomov: changelog ]

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.