---
id: CVE-2026-53150
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  thunderbolt: Reject zero-length property entries in validator

  tb_property_entry_valid() accepts entries with length == 0 for
  DIRECTORY, DATA, and TEXT types
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  thunderbolt: Reject zero-length property entries in validator

  tb_property_entry_valid() accepts entries with length == 0 for
  DIRECTORY, DATA, and TEXT types.  A zero-l…
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-191
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.15, < 5.10.259'
  - 'linux_kernel >= 5.11, < 5.15.210'
  - 'linux_kernel >= 5.16, < 6.1.176'
  - 'linux_kernel >= 6.2, < 6.6.143'
  - 'linux_kernel >= 6.7, < 6.12.94'
  - 'linux_kernel >= 6.13, < 6.18.36'
  - 'linux_kernel >= 6.19, < 7.0.13'
  - linux_kernel = 7.1
patched:
  - linux_kernel 7.0.13
published: '2026-06-25'
updated: '2026-07-06'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53150'
references:
  - url: 'https://git.kernel.org/stable/c/2e0ddac549ebd713eb9f4a15b6496e3440a17d8b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/35d6c9252a152e756768a26dbf216b9dd9dd8e92'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3b6e68cb97f725385010264a873e14a3921b6b8a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5f56bc6bddffe8710ba0ba8844023b5a44ca90e4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/99d9dbad1463afb510d42c9714f846361d1b726d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ca11e7da4fba4b394f69e16448f4463c44c84de6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cff8eb65d1eafe7793e54b4d0cf6bf831644630b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00123
epssPercentile: 0.01763
ingestedAt: '2026-07-06T18:45:21.305Z'
---

## Overview

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

thunderbolt: Reject zero-length property entries in validator

tb_property_entry_valid() accepts entries with length == 0 for
DIRECTORY, DATA, and TEXT types.  A zero-length TEXT entry passes
validation but causes an underflow in the null-termination logic:

  property->value.text[property->length * 4 - 1] = '\0';

When property->length is 0 this writes to offset -1 relative to
the allocation.

Reject zero-length entries early in the validator since they have no
valid representation in the XDomain property protocol.

## Affected

- `linux_kernel >= 4.15, < 5.10.259`
- `linux_kernel >= 5.11, < 5.15.210`
- `linux_kernel >= 5.16, < 6.1.176`
- `linux_kernel >= 6.2, < 6.6.143`
- `linux_kernel >= 6.7, < 6.12.94`
- `linux_kernel >= 6.13, < 6.18.36`
- `linux_kernel >= 6.19, < 7.0.13`
- `linux_kernel = 7.1`

## Remediation

Upgrade past the affected range:

- `linux_kernel 7.0.13`