---
id: CVE-2025-68283
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  libceph: replace BUG_ON with bounds check for map->max_osd

  OSD indexes come from untrusted network packets
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  libceph: replace BUG_ON with bounds check for map->max_osd

  OSD indexes come from untrusted network packets. Boundary checks are
  added to validate these against map->ma…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
published: '2025-12-16'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T19:10:00.193'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-68283'
references:
  - url: 'https://git.kernel.org/stable/c/57f5fbae9f1024aba17ff75e00433324115c548a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b4368b7f97014e1015445d61abd0b27c4c6e8424'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/becc488a4d864db338ebd4e313aa3c77da24b604'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e67e3be690f5f7e3b031cf29e8d91e6d02a8e30d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ec3797f043756a94ea2d0f106022e14ac4946c02'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00528
epssPercentile: 0.43121
ingestedAt: '2026-10-13T19:43:28.848Z'
---

## Overview

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

libceph: replace BUG_ON with bounds check for map->max_osd

OSD indexes come from untrusted network packets. Boundary checks are
added to validate these against map->max_osd.

[ idryomov: drop BUG_ON in ceph_get_primary_affinity(), minor cosmetic
  edits ]

## Remediation

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