---
id: CVE-2026-46190
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mtd: spi-nor: debugfs: fix out-of-bounds read in spi_nor_params_show()

  Sashiko noticed an out-of-bounds read [1].

  In spi_nor_params_show(), the snor_f_names array is …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mtd: spi-nor: debugfs: fix out-of-bounds read in spi_nor_params_show()

  Sashiko noticed an out-of-bounds read [1].

  In spi_nor_params_show(), the snor_f_names array is …
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'
cwe:
  - CWE-125
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.19, < 6.6.140'
  - 'linux_kernel >= 6.7, < 6.12.88'
  - 'linux_kernel >= 6.13, < 6.18.30'
  - 'linux_kernel >= 6.19, < 7.0.7'
  - linux_kernel = 7.1
patched:
  - linux_kernel 7.0.7
published: '2026-05-28'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:19:49.310'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46190'
references:
  - url: 'https://git.kernel.org/stable/c/231b8e1f604f6e0a7e100536f506cdf482e2c5f5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/34bdcfb496b29f9a52431194f94473b37fb8c162'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9a80c458320e0514e11945402dd6e48fcee05524'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c0b654bc0b76a1da102d9138be1ed1223bd99310'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ca18c180b053f6ce80394322b314ac721c316af7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e47029b977e747cb3a9174308fd55762cce70147'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-784472.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00167
epssPercentile: 0.05518
ingestedAt: '2026-10-15T03:30:12.895Z'
---

## Overview

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

mtd: spi-nor: debugfs: fix out-of-bounds read in spi_nor_params_show()

Sashiko noticed an out-of-bounds read [1].

In spi_nor_params_show(), the snor_f_names array is passed to
spi_nor_print_flags() using sizeof(snor_f_names).

Since snor_f_names is an array of pointers, sizeof() returns the total
number of bytes occupied by the pointers
	(element_count * sizeof(void *))
rather than the element count itself. On 64-bit systems, this makes the
passed length 8x larger than intended.

Inside spi_nor_print_flags(), the 'names_len' argument is used to
bounds-check the 'names' array access. An out-of-bounds read occurs
if a flag bit is set that exceeds the array's actual element count
but is within the inflated byte-size count.

Correct this by using ARRAY_SIZE() to pass the actual number of
string pointers in the array.

## Affected

- `linux_kernel >= 5.19, < 6.6.140`
- `linux_kernel >= 6.7, < 6.12.88`
- `linux_kernel >= 6.13, < 6.18.30`
- `linux_kernel >= 6.19, < 7.0.7`
- `linux_kernel = 7.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.7`