---
id: CVE-2026-92480
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: ufs: core: Validate string descriptors

  The string descriptor length includes a two-byte header while the UTF-16
  payload starts after it
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: ufs: core: Validate string descriptors

  The string descriptor length includes a two-byte header while the UTF-16
  payload starts after it. utf16s_to_utf8s() expect…
severity: medium
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 4b828fe156a662a4b6135019bf077040340f299b <
    66da25277256b6bf4c3fdbf3c9bfd43324c9cf25
  - >-
    Linux >= 4b828fe156a662a4b6135019bf077040340f299b <
    d96e83d028d7d8762e424e49c671d49ac2ecf14f
  - Linux 5.4
published: '2026-09-17'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:18:04.390'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92480'
references:
  - url: 'https://git.kernel.org/stable/c/66da25277256b6bf4c3fdbf3c9bfd43324c9cf25'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d96e83d028d7d8762e424e49c671d49ac2ecf14f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f3480c59f4ce97d831e9d06f5a2b9c20547ed1a4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92480.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-92480'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2536513'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-92480'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92480'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-92480.mbox
  - url: 'https://git.kernel.org/stable/c/566109f1ee4e389b4effab43b0ce1fdab302e9de'
  - url: 'https://git.kernel.org/stable/c/02dd1a65dff842d9360a38ebe243dc8f6adbbaf5'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00209
epssPercentile: 0.10947
ingestedAt: '2026-09-17T16:21:47.788Z'
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-125
---

## Overview

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

scsi: ufs: core: Validate string descriptors

The string descriptor length includes a two-byte header while the UTF-16
payload starts after it. utf16s_to_utf8s() expects a count of UTF-16 code
units, not bytes. Passing the payload byte count can make it read beyond
the descriptor buffer.

Validate that the payload has an even byte count, pass a code-unit count to
the converter, and allocate sufficient UTF-8 output space.

The raw string buffer starts after the descriptor header but its size is
bLength. Copying bLength bytes from that pointer can read beyond the
response buffer.

Allocate a zeroed bLength-sized buffer and copy only the UTF-16
payload. This preserves the raw buffer size consumed by the RPMB device-ID
ABI while avoiding the overread.

## 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 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92480.json)