---
id: CVE-2026-98322
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: nft_nat: fully initialise new_addr in netmap setup

  nft_nat_setup_netmap() builds the mapped address in an on-stack
  union nf_inet_addr
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: nft_nat: fully initialise new_addr in netmap setup

  nft_nat_setup_netmap() builds the mapped address in an on-stack
  union nf_inet_addr. For an IPv4 mapping i…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 3ff7ddb1353da9b535e65702704cbadea1da9a00 <
    29365695842db0a97b701a43a09fad1b4f7ecf3e
  - >-
    Linux >= 3ff7ddb1353da9b535e65702704cbadea1da9a00 <
    7b9380c38c2fd2189416fa602bdbc5c8523b84b2
  - >-
    Linux >= 3ff7ddb1353da9b535e65702704cbadea1da9a00 <
    eb2030137dba3b59cbb5057a33af70488d6bc231
  - >-
    Linux >= 3ff7ddb1353da9b535e65702704cbadea1da9a00 <
    e4982c489ee359162eee3ece1fb36082648464a5
  - >-
    Linux >= 3ff7ddb1353da9b535e65702704cbadea1da9a00 <
    161f5860c92a8ec80b6bdff16e79d70dcd8afc5a
  - >-
    Linux >= 3ff7ddb1353da9b535e65702704cbadea1da9a00 <
    0ce42c7b84032335abff9eac43762e4ca8224451
  - >-
    Linux >= 3ff7ddb1353da9b535e65702704cbadea1da9a00 <
    1c43f5db482f74b41987c39c9c375a5e767556eb
  - >-
    Linux >= 3ff7ddb1353da9b535e65702704cbadea1da9a00 <
    d313499df66159b4b7971d760d16729598ab7e5a
  - Linux 5.8
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:24.243'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98322'
references:
  - url: 'https://git.kernel.org/stable/c/0ce42c7b84032335abff9eac43762e4ca8224451'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/161f5860c92a8ec80b6bdff16e79d70dcd8afc5a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1c43f5db482f74b41987c39c9c375a5e767556eb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/29365695842db0a97b701a43a09fad1b4f7ecf3e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7b9380c38c2fd2189416fa602bdbc5c8523b84b2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d313499df66159b4b7971d760d16729598ab7e5a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e4982c489ee359162eee3ece1fb36082648464a5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/eb2030137dba3b59cbb5057a33af70488d6bc231'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.406Z'
---

## Overview

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

netfilter: nft_nat: fully initialise new_addr in netmap setup

nft_nat_setup_netmap() builds the mapped address in an on-stack
union nf_inet_addr. For an IPv4 mapping it writes only the 4-byte .ip
member and the loop runs a single 32-bit iteration, but it then copies
the whole 16-byte union into range->min_addr and range->max_addr, so the
upper 12 bytes reach nf_nat_setup_info() uninitialised.

KMSAN reports an uninit-value in nf_nat_setup_info() reached from
nft_nat_eval(). The IPv6 path fills all 16 bytes and is not affected.

Zero-initialise new_addr.

## Remediation

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