CVE-2023-4004

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.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.9% chance of exploitation in the next 30 days; higher than 59% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2023-07-31

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• fedoraproject:fedora
• linux:linux_kernel
• netapp:h300s
• netapp:h410s
• netapp:h500s
• netapp:h700s
• redhat:enterprise_linux

References

• https://access.redhat.com/errata/RHSA-2023:4961
• https://access.redhat.com/errata/RHSA-2023:4962
• https://access.redhat.com/errata/RHSA-2023:4967
• https://access.redhat.com/errata/RHSA-2023:5069
• https://access.redhat.com/errata/RHSA-2023:5091

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