---
id: CVE-2024-38564
title: 'bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE

  bpf_prog_attach uses attach_type_to_prog_type to enforce proper
  attach type for BPF_PROG_T…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 3505cb9fa26cfec9512744466e754a8cbc2365b0 <
    6675c541f540a29487a802d3135280b69b9f568d
  - >-
    Linux >= 3505cb9fa26cfec9512744466e754a8cbc2365b0 <
    67929e973f5a347f05fef064fea4ae79e7cdb5fd
  - >-
    Linux >= 3505cb9fa26cfec9512744466e754a8cbc2365b0 <
    b34bbc76651065a5eafad8ddff1eb8d1f8473172
  - >-
    Linux >= 3505cb9fa26cfec9512744466e754a8cbc2365b0 <
    543576ec15b17c0c93301ac8297333c7b6e84ac7
  - Linux 6.6
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-06-20T14:57:28.333210Z'
published: '2024-06-19'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T15:53:48.399Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-38564'
references:
  - url: 'https://git.kernel.org/stable/c/6675c541f540a29487a802d3135280b69b9f568d'
  - url: 'https://git.kernel.org/stable/c/67929e973f5a347f05fef064fea4ae79e7cdb5fd'
  - url: 'https://git.kernel.org/stable/c/b34bbc76651065a5eafad8ddff1eb8d1f8473172'
  - url: 'https://git.kernel.org/stable/c/543576ec15b17c0c93301ac8297333c7b6e84ac7'
tags:
  - cve.org
epss: 0.00239
epssPercentile: 0.14849
ingestedAt: '2026-10-27T16:11:59.482Z'
---

## Overview

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

bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE

bpf_prog_attach uses attach_type_to_prog_type to enforce proper
attach type for BPF_PROG_TYPE_CGROUP_SKB. link_create uses
bpf_prog_get and relies on bpf_prog_attach_check_attach_type
to properly verify prog_type <> attach_type association.

Add missing attach_type enforcement for the link_create case.
Otherwise, it's currently possible to attach cgroup_skb prog
types to other cgroup hooks.

## Affected

- `Linux >= 3505cb9fa26cfec9512744466e754a8cbc2365b0 < 6675c541f540a29487a802d3135280b69b9f568d`
- `Linux >= 3505cb9fa26cfec9512744466e754a8cbc2365b0 < 67929e973f5a347f05fef064fea4ae79e7cdb5fd`
- `Linux >= 3505cb9fa26cfec9512744466e754a8cbc2365b0 < b34bbc76651065a5eafad8ddff1eb8d1f8473172`
- `Linux >= 3505cb9fa26cfec9512744466e754a8cbc2365b0 < 543576ec15b17c0c93301ac8297333c7b6e84ac7`
- `Linux 6.6`

## Remediation

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