---
id: CVE-2023-3390
title: >-
  A use-after-free vulnerability was found in the Linux kernel's netfilter
  subsystem in net/netfilter/nf_tables_api.c.


  Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a
  dangling pointer in the same transaction caus…
summary: >-
  A use-after-free vulnerability was found in the Linux kernel's netfilter
  subsystem in net/netfilter/nf_tables_api.c.


  Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a
  dangling pointer in the same transaction caus…
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'
cwe:
  - CWE-416
  - CWE-416
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 3.16, < 4.14.322'
  - 'linux_kernel >= 4.15, < 4.19.291'
  - 'linux_kernel >= 4.20, < 5.4.251'
  - 'linux_kernel >= 5.5, < 5.10.188'
  - 'linux_kernel >= 5.11, < 5.15.118'
  - 'linux_kernel >= 5.16, < 6.1.35'
  - 'linux_kernel >= 6.2, < 6.3.9'
  - h300s
  - h410c
  - h410s
  - h500s
  - h700s
patched:
  - linux_kernel 6.3.9
published: '2023-06-28'
updated: '2026-07-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-3390'
references:
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1240eb93f0616b21c675416516ff3d74798fdc97
    label: cve-coordination@google.com
  - url: 'https://kernel.dance/1240eb93f0616b21c675416516ff3d74798fdc97'
    label: cve-coordination@google.com
  - url: 'https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html'
    label: cve-coordination@google.com
  - url: 'https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html'
    label: cve-coordination@google.com
  - url: 'https://lists.debian.org/debian-security-announce/2023/msg00140.html'
    label: cve-coordination@google.com
  - url: 'https://lists.debian.org/debian-security-announce/2023/msg00153.html'
    label: cve-coordination@google.com
  - url: >-
      https://packetstorm.news/tos/aHR0cHM6Ly9wYWNrZXRzdG9ybS5uZXdzL2ZpbGVzLzE3NDU3Ny9LZXJuZWwtTGl2ZS1QYXRjaC1TZWN1cml0eS1Ob3RpY2UtTFNOLTAwOTctMS5odG1sIDE3ODQ3MjE0NzIgODFlMjk3ZjBmM2FiMTIwOTI5Nzg0ZmRlNGM2NWNjNjBhMThhMzBiOGE5NjQ0YzQ0NTFhMzJlZjhiNTk1ZTk2Yg==
    label: cve-coordination@google.com
  - url: 'https://security.netapp.com/advisory/ntap-20230818-0004/'
    label: cve-coordination@google.com
  - url: >-
      http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1240eb93f0616b21c675416516ff3d74798fdc97
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://kernel.dance/1240eb93f0616b21c675416516ff3d74798fdc97'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20230818-0004/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2023/dsa-5448'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2023/dsa-5461'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - exploit-available
epss: 0.00914
epssPercentile: 0.58619
ingestedAt: '2026-07-22T13:03:40.046Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/flygonty/CVE-2023-3390_PoC'
  checkedAt: '2026-09-24T07:52:49.915Z'
exploitAvailable: true
---

## Overview

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c.

Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue.

We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97

## Affected

- `linux_kernel >= 3.16, < 4.14.322`
- `linux_kernel >= 4.15, < 4.19.291`
- `linux_kernel >= 4.20, < 5.4.251`
- `linux_kernel >= 5.5, < 5.10.188`
- `linux_kernel >= 5.11, < 5.15.118`
- `linux_kernel >= 5.16, < 6.1.35`
- `linux_kernel >= 6.2, < 6.3.9`
- `h300s`
- `h410c`
- `h410s`
- `h500s`
- `h700s`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.3.9`