---
id: CVE-2024-35984
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  i2c: smbus: fix NULL function pointer dereference

  Baruch reported an OOPS when using the designware controller as target
  only
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  i2c: smbus: fix NULL function pointer dereference

  Baruch reported an OOPS when using the designware controller as target
  only. Target-only modes break the assumption o…
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-476
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 3.19, < 4.19.313'
  - 'linux_kernel >= 4.20, < 5.4.275'
  - 'linux_kernel >= 5.5, < 5.10.216'
  - 'linux_kernel >= 5.11, < 5.15.158'
  - 'linux_kernel >= 5.16, < 6.1.90'
  - 'linux_kernel >= 6.2, < 6.6.30'
  - 'linux_kernel >= 6.7, < 6.8.9'
patched:
  - linux_kernel 6.8.9
published: '2024-05-20'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:18:16.317'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-35984'
references:
  - url: 'https://git.kernel.org/stable/c/357c64ef1ef39b1e7cd91ab6bdd304d043702c83'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/40f1d79f07b49c8a64a861706e5163f2db4bd95d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4e75e222d397c6752b229ed72fc4644c8c36ecde'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5a09eae9a7db597fe0c1fc91636205b4a25d2620'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5fd72404587d7db4acb2d241fd8c387afb0a7aec'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/91811a31b68d3765b3065f4bb6d7d6d84a7cfc9f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ad3c3ac7a03be3697114f781193dd3e9d97e6e23'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e3425674ff68dc521c57c6eabad0cbd20a027d85'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/357c64ef1ef39b1e7cd91ab6bdd304d043702c83'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/40f1d79f07b49c8a64a861706e5163f2db4bd95d'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/4e75e222d397c6752b229ed72fc4644c8c36ecde'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/5a09eae9a7db597fe0c1fc91636205b4a25d2620'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/5fd72404587d7db4acb2d241fd8c387afb0a7aec'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/91811a31b68d3765b3065f4bb6d7d6d84a7cfc9f'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/ad3c3ac7a03be3697114f781193dd3e9d97e6e23'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/e3425674ff68dc521c57c6eabad0cbd20a027d85'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-613116.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00257
epssPercentile: 0.16444
ingestedAt: '2026-10-15T03:30:12.695Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-05-21T15:11:46.719693Z'
---

## Overview

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

i2c: smbus: fix NULL function pointer dereference

Baruch reported an OOPS when using the designware controller as target
only. Target-only modes break the assumption of one transfer function
always being available. Fix this by always checking the pointer in
__i2c_transfer.

[wsa: dropped the simplification in core-smbus to avoid theoretical regressions]

## Affected

- `linux_kernel >= 3.19, < 4.19.313`
- `linux_kernel >= 4.20, < 5.4.275`
- `linux_kernel >= 5.5, < 5.10.216`
- `linux_kernel >= 5.11, < 5.15.158`
- `linux_kernel >= 5.16, < 6.1.90`
- `linux_kernel >= 6.2, < 6.6.30`
- `linux_kernel >= 6.7, < 6.8.9`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.8.9`