---
id: CVE-2026-97440
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: qrtr: fix node refcount leak on ctrl packet alloc failure

  qrtr_send_resume_tx() calls qrtr_node_lookup() which takes a
  reference on the returned node
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: qrtr: fix node refcount leak on ctrl packet alloc failure

  qrtr_send_resume_tx() calls qrtr_node_lookup() which takes a
  reference on the returned node. If the subs…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-911
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= cb6530b99fafea6c0636c4640bd21301d12cdbc9 <
    78d066ecac9ce50441d4affae0df2093c4c3e62e
  - >-
    Linux >= cb6530b99fafea6c0636c4640bd21301d12cdbc9 <
    f3e90fbcd2d5ec1632bc2e8cdd1218f56bcb5fcf
  - >-
    Linux >= cb6530b99fafea6c0636c4640bd21301d12cdbc9 <
    c3515740174b778d0ee44acc477b51a6478da6b8
  - >-
    Linux >= cb6530b99fafea6c0636c4640bd21301d12cdbc9 <
    f76a39c45182d9137e053081cee9f2c197404ce6
  - >-
    Linux >= cb6530b99fafea6c0636c4640bd21301d12cdbc9 <
    477353db343663d5502ca442c6de785d2f23f273
  - >-
    Linux >= cb6530b99fafea6c0636c4640bd21301d12cdbc9 <
    9d969c98732a4d42212ec580dd5bbad53f246103
  - >-
    Linux >= cb6530b99fafea6c0636c4640bd21301d12cdbc9 <
    3b09ff54114566864eea59020f6b69c5bb325b9d
  - Linux 5.6
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:55.643'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97440'
references:
  - url: 'https://git.kernel.org/stable/c/3b09ff54114566864eea59020f6b69c5bb325b9d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/477353db343663d5502ca442c6de785d2f23f273'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/78d066ecac9ce50441d4affae0df2093c4c3e62e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9d969c98732a4d42212ec580dd5bbad53f246103'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c3515740174b778d0ee44acc477b51a6478da6b8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f3e90fbcd2d5ec1632bc2e8cdd1218f56bcb5fcf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f76a39c45182d9137e053081cee9f2c197404ce6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97440.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97440'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540501'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97440'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97440'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97440.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00173
epssPercentile: 0.06619
cvssSource: vendor
ingestedAt: '2026-09-24T16:47:15.878Z'
---

## Overview

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

net: qrtr: fix node refcount leak on ctrl packet alloc failure

qrtr_send_resume_tx() calls qrtr_node_lookup() which takes a
reference on the returned node. If the subsequent call to
qrtr_alloc_ctrl_packet() fails due to memory allocation failure, the
function returns -ENOMEM without calling qrtr_node_release() to
release the node reference.

Add qrtr_node_release(node) before returning on the allocation failure
path to properly release the reference.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97440.json)