---
id: CVE-2026-97529
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]

  The FC BSG transport allocates job->request via memdup_user() using the
  exact user-supplied request…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]

  The FC BSG transport allocates job->request via memdup_user() using the
  exact user-supplied request…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 <
    740f3458a4798af54aaf8cf63e797d407e8b6d3b
  - >-
    Linux >= 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 <
    f75bff451a2fac5aed82f9641df1e9a42c5a899d
  - >-
    Linux >= 01e0e15c8b3b32e006e5cccac10c8b377ac3d803 <
    4cf38dd9465736141263ebb63375868311a0ec81
  - Linux 4.10
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T11:17:03.087'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97529'
references:
  - url: 'https://git.kernel.org/stable/c/4cf38dd9465736141263ebb63375868311a0ec81'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/740f3458a4798af54aaf8cf63e797d407e8b6d3b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f75bff451a2fac5aed82f9641df1e9a42c5a899d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T11:06:38.925Z'
---

## Overview

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

scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]

The FC BSG transport allocates job->request via memdup_user() using the
exact user-supplied request_len. For FC_BSG_HST_VENDOR,
fc_bsg_host_dispatch() only guarantees request_len covers msgcode and
vendor_id; it does not account for the vendor_cmd[] flexible array.

qla2xxx then reads the command selector vendor_cmd[0] and, in several
sub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor
command area without verifying request_len. A caller holding
CAP_SYS_RAWIO can submit a short request whose vendor_id matches the
host, triggering out-of-bounds heap reads (KASAN-detectable, and able to
mis-select a command or panic).

Add a central guard in qla2x00_process_vendor_specific() so the selector
is always in bounds, restrict the early vendor_cmd[0] read in
qla24xx_bsg_request() to sufficiently long vendor messages, and add
request_len checks to the sub-handlers that read further:
qla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(),
qla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(),
qla2x00_update_optrom(), qlafx00_mgmt_cmd() and
qla28xx_validate_flash_image().

## Remediation

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