---
id: CVE-2026-72040
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ipmi: fix refcount leak in i_ipmi_request()

  When a caller provides a `supplied_recv` message to i_ipmi_request(),
  the function increments the user's `nr_msgs` referenc…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ipmi: fix refcount leak in i_ipmi_request()

  When a caller provides a `supplied_recv` message to i_ipmi_request(),
  the function increments the user's `nr_msgs` referenc…
severity: none
published: '2026-08-15'
updated: '2026-08-23'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72040'
references:
  - url: 'https://git.kernel.org/stable/c/0fd23994ec8c5436d9f0b50848deb87ed933e6b3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/122ca6b2af714e114c9b872a48372ace31a9ab1f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9409e18ffe7378d202efe1cf69989df9f67b0369'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a3f3859cecacb64f18fd446271ece9a3b3f2d4de'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e2a3b77df6aef031455dd83ea8ed4344b7dca1f9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f5c5065963024390ddad51bd455d1adc710de575'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00206
epssPercentile: 0.10937
ingestedAt: '2026-08-23T13:48:07.559Z'
---

## Overview

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

ipmi: fix refcount leak in i_ipmi_request()

When a caller provides a `supplied_recv` message to i_ipmi_request(),
the function increments the user's `nr_msgs` reference count. If an
error occurs later, the out_err cleanup path only frees the recv_msg
if the function allocated it itself (i.e., !supplied_recv). In the
supplied_recv case the cleanup is skipped, leaving the reference count
elevated. The caller ipmi_request_supply_msgs() does not release the
supplied_recv on error, so the reference is permanently leaked.

Fix this by explicitly reverting the reference count operations when a
supplied recv_msg with a valid user pointer is present in the error
path: decrement nr_msgs and drop the user's kref.

## Remediation

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