---
id: CVE-2026-97535
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: qla2xxx: Bound VP index against VP_CTRL IOCB bitmap size

  The VP control IOCB selects its target virtual port by setting one bit
  in vp_idx_map, a fixed 16-byte (1…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: qla2xxx: Bound VP index against VP_CTRL IOCB bitmap size

  The VP control IOCB selects its target virtual port by setting one bit
  in vp_idx_map, a fixed 16-byte (1…
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-787
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 2853192e154b813fe34a6cbee5e34dfef50d29d0 <
    c80a0362a0fe548c15a0324b1f61c04b62bb2174
  - >-
    Linux >= 2853192e154b813fe34a6cbee5e34dfef50d29d0 <
    48a44e19746eaa70320a3c2571dcb345192fca72
  - >-
    Linux >= 2853192e154b813fe34a6cbee5e34dfef50d29d0 <
    13354ad251ab009102597a791bc7c4d2265229e1
  - >-
    Linux >= 2853192e154b813fe34a6cbee5e34dfef50d29d0 <
    878613ecb5a36db26859c4fd83daf9283a334fa2
  - Linux 4.16
published: '2026-09-25'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:18:02.283'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97535'
references:
  - url: 'https://git.kernel.org/stable/c/13354ad251ab009102597a791bc7c4d2265229e1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/48a44e19746eaa70320a3c2571dcb345192fca72'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/878613ecb5a36db26859c4fd83daf9283a334fa2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c80a0362a0fe548c15a0324b1f61c04b62bb2174'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97535.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97535'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2541234'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97535'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97535'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97535.mbox
  - url: 'https://git.kernel.org/stable/c/674d783f2e80d0d7c1c86bf36dc0a09033e704de'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00206
epssPercentile: 0.10587
cvssSource: vendor
ingestedAt: '2026-09-25T11:06:38.923Z'
---

## Overview

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

scsi: qla2xxx: Bound VP index against VP_CTRL IOCB bitmap size

The VP control IOCB selects its target virtual port by setting one bit
in vp_idx_map, a fixed 16-byte (128-bit) array in both
vp_ctrl_entry_24xx and vp_ctrl_entry_24xx_ext. qla25xx_ctrlvp_iocb()
computes map = (vp_index - 1) / 8 and writes vce->vp_idx_map[map]
without checking that map stays within the array.

max_npiv_vports is taken from firmware and only sanitized to a
MIN_MULTI_ID_FABRIC-aligned boundary, so it can legitimately be 191 or
255, and qla24xx_control_vp() only rejects vp_index >= max_npiv_vports.
A vp_index above 128 therefore yields map >= 16 and an out-of-bounds
write of up to 16 bytes past vp_idx_map, corrupting the trailing IOCB
fields (or the adjacent request-ring slot on the 64-byte layout).

Reject a vp_index that cannot be represented in the IOCB bitmap in
qla24xx_control_vp(), and add a defensive ARRAY_SIZE() guard in
qla25xx_ctrlvp_iocb() before the write. Adapters that report the usual
63 or 127 NPIV vports are unaffected.

## 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-2026-97535.json)