CVE-2023-4004 HIGH

CVE-2023-4004: Kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()

Vendor Red Hat
Product Red Hat Enterprise Linux 8
Weakness CWE-416
Published July 31, 2023
Last update November 8, 2025
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system.

Key dates

02Disclosure timeline

July 31, 2023 CVE published
November 8, 2025 Record updated