---
id: CVE-2026-90141
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ipvs: fix integer overflow in ftp helper port/address parsing

  ip_vs_ftp_get_addrport() accumulates decimal digits into a __u16
  (hport) and into unsigned char (p[]) wit…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ipvs: fix integer overflow in ftp helper port/address parsing

  ip_vs_ftp_get_addrport() accumulates decimal digits into a __u16
  (hport) and into unsigned char (p[]) wit…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    d02de9a7a7e2484da0cf37e50614840623b98a62
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    fc1493c905d7e0bc8830c1d83915cb7831daf1a1
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    50cb9b7263a2ed01f7d2f97818a800c2ee05f661
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    deaa88fa010ba0dfc554d09e006ddd1ce9945c82
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    00bcc6d679262ea42688fba1d7819ea6e56f12ef
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    4aed450adaee3a021db27be94c61fe025b0d05ff
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    b1908bff0faaa94d55be72da65879cad632e8236
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    e625a9477d12baaff4025c5f9989184a907ea8fc
  - Linux 2.6.12
published: '2026-09-17'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T18:17:43.397'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90141'
references:
  - url: 'https://git.kernel.org/stable/c/00bcc6d679262ea42688fba1d7819ea6e56f12ef'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4aed450adaee3a021db27be94c61fe025b0d05ff'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/50cb9b7263a2ed01f7d2f97818a800c2ee05f661'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b1908bff0faaa94d55be72da65879cad632e8236'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d02de9a7a7e2484da0cf37e50614840623b98a62'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/deaa88fa010ba0dfc554d09e006ddd1ce9945c82'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e625a9477d12baaff4025c5f9989184a907ea8fc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fc1493c905d7e0bc8830c1d83915cb7831daf1a1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00433
epssPercentile: 0.37125
ingestedAt: '2026-09-17T16:21:47.880Z'
---

## Overview

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

ipvs: fix integer overflow in ftp helper port/address parsing

ip_vs_ftp_get_addrport() accumulates decimal digits into a __u16
(hport) and into unsigned char (p[]) without checking for overflow.
A crafted FTP PASV/EPSV response with an over-long port or address
octet wraps the value, so the helper configures the data connection
with a truncated port/address.

The netfilter conntrack FTP helper had the same defect, fixed in
commit 2b413fc689ba ("netfilter: nf_conntrack_ftp: avoid u16
overflows"). Apply the equivalent fix here: widen the port accumulator
to u32 and reject values above 65535, and reject address octets above
255.

## Remediation

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