---
id: CVE-2026-97536
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: qla2xxx: Fix use-after-free of qpair work on queue teardown

  The response queue MSI-X handler qla2xxx_msix_rsp_q() schedules
  qla_do_work() via queue_work(ha->wq, …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: qla2xxx: Fix use-after-free of qpair work on queue teardown

  The response queue MSI-X handler qla2xxx_msix_rsp_q() schedules
  qla_do_work() via queue_work(ha->wq, …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-825
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 68ca949cdb04b4dc71451a999148fbc5f187a220 <
    dd6c14db0dbb7774278e62c8114902f953540932
  - >-
    Linux >= 68ca949cdb04b4dc71451a999148fbc5f187a220 <
    1710a69fd74d0b4bdfcc57c3309b1c4057f70d85
  - >-
    Linux >= 68ca949cdb04b4dc71451a999148fbc5f187a220 <
    f1f4d1cb93eeeb250eac9405121933e268eefbd3
  - >-
    Linux >= 68ca949cdb04b4dc71451a999148fbc5f187a220 <
    19788a55cab61d78e33e0914a5a31d27843e8a4a
  - Linux 2.6.31
published: '2026-09-25'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:18:02.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97536'
references:
  - url: 'https://git.kernel.org/stable/c/1710a69fd74d0b4bdfcc57c3309b1c4057f70d85'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/19788a55cab61d78e33e0914a5a31d27843e8a4a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/dd6c14db0dbb7774278e62c8114902f953540932'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f1f4d1cb93eeeb250eac9405121933e268eefbd3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97536.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97536'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541041'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97536'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97536'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97536.mbox
  - url: 'https://git.kernel.org/stable/c/9bd063c082ef0475dfc28c46f607aa3e90fe13d7'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00289
epssPercentile: 0.21349
scores:
  nvd: 7.5
  vendor: 5.5
  cna: 7.5
ingestedAt: '2026-09-25T11:06:38.923Z'
---

## Overview

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

scsi: qla2xxx: Fix use-after-free of qpair work on queue teardown

The response queue MSI-X handler qla2xxx_msix_rsp_q() schedules
qla_do_work() via queue_work(ha->wq, &qpair->q_work). qla_do_work()
dereferences the qpair (vha, rsp) and takes qpair->qp_lock.

During teardown, qla2xxx_delete_qpair() deletes the response queue, which
calls free_irq() in qla25xx_free_rsp_que(), and then frees the queue and
the qpair. free_irq() waits for running hardirq handlers but does not
cancel work already placed on ha->wq. A still-pending q_work then runs
qla_do_work() against the freed qpair and response queue, causing a
use-after-free. This is especially likely during full adapter teardown,
where destroy_workqueue(ha->wq) forces pending work to run after the queue
pairs have been freed.

Flush the work item with cancel_work_sync() in qla25xx_free_rsp_que()
after free_irq() has released the interrupt (so no new work can be
queued) and before the response queue and qpair memory are freed (so the
flushed handler still sees valid memory). Guard on rsp->qpair and ha->wq
to match the INIT_WORK() condition and avoid operating on an
uninitialized work_struct.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97536.json)