---
id: CVE-2026-72224
title: 'nvdimm/btt: Free arenas on btt_init() error paths'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  nvdimm/btt: Free arenas on btt_init() error paths

  The arenas allocated by discover_arenas() or create_arenas() are not
  freed on some error paths in btt_init(). This le…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 <
    9ab5293d9ac3f2c4232220e563d04701f5f44607
  - >-
    Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 <
    68c967e105d50f885e02b0dbdc9211fd5f84bdcd
  - >-
    Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 <
    0b63788093ff6ccfffe6e87de9e08aeeb406599c
  - >-
    Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 <
    5804e6a6912b5a1e47c821777d69191d69a3fe64
  - >-
    Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 <
    52a7e7ece79c4b0f406149e19cd2b4b11a6c19e4
  - >-
    Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 <
    f4ca396bdd60b4e0a665b2589bfc4ddbea9bda2b
  - >-
    Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 <
    7e49684d90faa34ff6d5586be658e986d9d475ac
  - >-
    Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 <
    1a6b6442a982d0ca5fb6a1a39b6f6dfd760eda57
  - Linux 4.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:52:58.565861Z'
published: '2026-08-15'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:55:22.837Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72224'
references:
  - url: 'https://git.kernel.org/stable/c/9ab5293d9ac3f2c4232220e563d04701f5f44607'
  - url: 'https://git.kernel.org/stable/c/68c967e105d50f885e02b0dbdc9211fd5f84bdcd'
  - url: 'https://git.kernel.org/stable/c/0b63788093ff6ccfffe6e87de9e08aeeb406599c'
  - url: 'https://git.kernel.org/stable/c/5804e6a6912b5a1e47c821777d69191d69a3fe64'
  - url: 'https://git.kernel.org/stable/c/52a7e7ece79c4b0f406149e19cd2b4b11a6c19e4'
  - url: 'https://git.kernel.org/stable/c/f4ca396bdd60b4e0a665b2589bfc4ddbea9bda2b'
  - url: 'https://git.kernel.org/stable/c/7e49684d90faa34ff6d5586be658e986d9d475ac'
  - url: 'https://git.kernel.org/stable/c/1a6b6442a982d0ca5fb6a1a39b6f6dfd760eda57'
tags:
  - cve.org
epss: 0.0022
epssPercentile: 0.12601
ingestedAt: '2026-11-06T18:00:12.586Z'
---

## Overview

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

nvdimm/btt: Free arenas on btt_init() error paths

The arenas allocated by discover_arenas() or create_arenas() are not
freed on some error paths in btt_init(). This leaks memory when BTT
initialization fails.

Call free_arenas() from the affected error paths to release the
allocations.

[ as: commit message and log edits ]

## Affected

- `Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 < 9ab5293d9ac3f2c4232220e563d04701f5f44607`
- `Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 < 68c967e105d50f885e02b0dbdc9211fd5f84bdcd`
- `Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 < 0b63788093ff6ccfffe6e87de9e08aeeb406599c`
- `Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 < 5804e6a6912b5a1e47c821777d69191d69a3fe64`
- `Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 < 52a7e7ece79c4b0f406149e19cd2b4b11a6c19e4`
- `Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 < f4ca396bdd60b4e0a665b2589bfc4ddbea9bda2b`
- `Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 < 7e49684d90faa34ff6d5586be658e986d9d475ac`
- `Linux >= 5212e11fde4d40fa627668b4f2222d20db488f71 < 1a6b6442a982d0ca5fb6a1a39b6f6dfd760eda57`
- `Linux 4.2`

## Remediation

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