---
id: CVE-2025-38694
title: 'media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb()

  In dib7090p_rw_on_apb, msg is controlled by user. When msg[0].buf is null and
  msg[0].len is …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f <
    bc07cae4f36bb18d5b6a9ed835c1278ca44ec82e
  - >-
    Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f <
    ce8b7c711b9c4f040b5419729d0972db8e374324
  - >-
    Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f <
    529fd5593b721e6f4370c591f5086649ed149ff6
  - >-
    Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f <
    c33280d6bd668dbdc5a5f07887cc63a52ab4789c
  - >-
    Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f <
    09906650484a09b3a4d4b3d3065395856810becd
  - >-
    Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f <
    0bb32863426afe0badac25c28d59021f211d0f48
  - >-
    Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f <
    a0f744d6cdde81d7382e183f77a4080a39b206cd
  - >-
    Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f <
    19eb5d8e6aa1169d368a4d69aae5572950deb89d
  - >-
    Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f <
    ce5cac69b2edac3e3246fee03e8f4c2a1075238b
  - Linux 2.6.39
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T21:07:30.128547Z'
published: '2025-09-04'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:12:53.355Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-38694'
references:
  - url: 'https://git.kernel.org/stable/c/bc07cae4f36bb18d5b6a9ed835c1278ca44ec82e'
  - url: 'https://git.kernel.org/stable/c/ce8b7c711b9c4f040b5419729d0972db8e374324'
  - url: 'https://git.kernel.org/stable/c/529fd5593b721e6f4370c591f5086649ed149ff6'
  - url: 'https://git.kernel.org/stable/c/c33280d6bd668dbdc5a5f07887cc63a52ab4789c'
  - url: 'https://git.kernel.org/stable/c/09906650484a09b3a4d4b3d3065395856810becd'
  - url: 'https://git.kernel.org/stable/c/0bb32863426afe0badac25c28d59021f211d0f48'
  - url: 'https://git.kernel.org/stable/c/a0f744d6cdde81d7382e183f77a4080a39b206cd'
  - url: 'https://git.kernel.org/stable/c/19eb5d8e6aa1169d368a4d69aae5572950deb89d'
  - url: 'https://git.kernel.org/stable/c/ce5cac69b2edac3e3246fee03e8f4c2a1075238b'
tags:
  - cve.org
epss: 0.00183
epssPercentile: 0.07931
ingestedAt: '2026-11-05T22:38:32.012Z'
---

## Overview

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

media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb()

In dib7090p_rw_on_apb, msg is controlled by user. When msg[0].buf is null and
msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing
msg[0].buf[2] without sanity check, null pointer deref would happen. We add
check on msg[0].len to prevent crash. Similar issue occurs when access
msg[1].buf[0] and msg[1].buf[1].

Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")

## Affected

- `Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f < bc07cae4f36bb18d5b6a9ed835c1278ca44ec82e`
- `Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f < ce8b7c711b9c4f040b5419729d0972db8e374324`
- `Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f < 529fd5593b721e6f4370c591f5086649ed149ff6`
- `Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f < c33280d6bd668dbdc5a5f07887cc63a52ab4789c`
- `Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f < 09906650484a09b3a4d4b3d3065395856810becd`
- `Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f < 0bb32863426afe0badac25c28d59021f211d0f48`
- `Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f < a0f744d6cdde81d7382e183f77a4080a39b206cd`
- `Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f < 19eb5d8e6aa1169d368a4d69aae5572950deb89d`
- `Linux >= 713d54a8bd812229410a1902cd9b332a2a27af9f < ce5cac69b2edac3e3246fee03e8f4c2a1075238b`
- `Linux 2.6.39`

## Remediation

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