---
id: CVE-2026-98272
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: mvpp2: prevent buffer overflow in page_pool allocation

  The per‑processor buffering scheme is supported only if the
  number of pools (nrxqs * 2) does not exceed MVP…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: mvpp2: prevent buffer overflow in page_pool allocation

  The per‑processor buffering scheme is supported only if the
  number of pools (nrxqs * 2) does not exceed MVP…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 7d04b0b13b1175ce0c4bdc77f1278c1f120f874f <
    5cefdb7acfc646fbded59ae77dfe0aac4c9e4a3c
  - >-
    Linux >= 7d04b0b13b1175ce0c4bdc77f1278c1f120f874f <
    4ac1d5adc4f4dbafbfd270b55cc6d8bf9849d545
  - >-
    Linux >= 7d04b0b13b1175ce0c4bdc77f1278c1f120f874f <
    dfd46b5584a5881b131008767950e1ab82713c8c
  - >-
    Linux >= 7d04b0b13b1175ce0c4bdc77f1278c1f120f874f <
    6569fd85b0ef9a8a6f20b7eb868420b8c7c0c2a0
  - >-
    Linux >= 7d04b0b13b1175ce0c4bdc77f1278c1f120f874f <
    e7f30dcfa6c64033bf9137362517bd248e5be384
  - >-
    Linux >= 7d04b0b13b1175ce0c4bdc77f1278c1f120f874f <
    f0e7d62c1eb984dd204095118973c59604144cd8
  - >-
    Linux >= 7d04b0b13b1175ce0c4bdc77f1278c1f120f874f <
    1734c3fc0066e228ce1c11e434b7c2527f0a949a
  - >-
    Linux >= 7d04b0b13b1175ce0c4bdc77f1278c1f120f874f <
    14cb1e7702e5cb3c58888f6aed498381a73927d2
  - Linux 5.4
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:16.780'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98272'
references:
  - url: 'https://git.kernel.org/stable/c/14cb1e7702e5cb3c58888f6aed498381a73927d2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1734c3fc0066e228ce1c11e434b7c2527f0a949a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4ac1d5adc4f4dbafbfd270b55cc6d8bf9849d545'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5cefdb7acfc646fbded59ae77dfe0aac4c9e4a3c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6569fd85b0ef9a8a6f20b7eb868420b8c7c0c2a0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/dfd46b5584a5881b131008767950e1ab82713c8c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e7f30dcfa6c64033bf9137362517bd248e5be384'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f0e7d62c1eb984dd204095118973c59604144cd8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.424Z'
---

## Overview

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

net: mvpp2: prevent buffer overflow in page_pool allocation

The per‑processor buffering scheme is supported only if the
number of pools (nrxqs * 2) does not exceed MVPP2_BM_MAX_POOLS (8).
This is already checked in mvpp2_probe() during the initial
activation of percpu_pools.

However, mvpp2_change_mtu() may later call
mvpp2_bm_switch_buffers(priv, true) without this check, which can
lead to an out-of-bounds access in the priv->page_pool array in
mvpp2_bm_init(). The array is sized to hold MVPP2_PORT_MAX_RXQ
entries, and mvpp2_get_nrxqs() may return exactly that value. The
per-CPU scheme then doubles it to nrxqs * 2, exceeding the array
bounds.

Check that the hardware version is MVPP22 or newer and that the
number of pools (nrxqs * 2) does not exceed MVPP2_BM_MAX_POOLS
before switching to per-CPU mode.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

## Remediation

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