CVE record · CVE-2023-4004

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

CVSS 7.8 HighEPSS 0.0092 · 60th percentile

Published by the CVE Program (CNA: redhat) at 31 Jul 2023, 16:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 8 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-477.27.1.rt7.290.el8_8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: kpatch-patch https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-477.27.1.el8_8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-193.119.1.el8_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.2 Telecommunications Update Service Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-193.119.1.rt13.170.el8_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.2 Telecommunications Update Service Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-193.119.1.el8_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Package name: kpatch-patch https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-193.119.1.el8_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-305.103.1.el8_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Telecommunications Update Service Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-305.103.1.rt7.178.el8_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Telecommunications Update Service Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-305.103.1.el8_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-305.103.1.el8_4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Package name: kpatch-patch https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Package name: kpatch-patch https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-372.75.1.el8_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-284.30.1.el9_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-284.30.1.rt14.315.el9_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-284.30.1.el9_2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: kpatch-patch https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-70.80.1.el9_0 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.14.0-70.80.1.rt21.151.el9_0 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support Package name: kpatch-patch https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.0-372.75.1.el8_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 6 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: kernel https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: kernel-rt https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected

Identifiers: CVE-2023-4004
CNA: redhat
Weakness (CWE): CWE-416
Tags: Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.2 Advanced Update Support
Red Hat Enterprise Linux 8.2 Telecommunications Update Service
Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.4 Telecommunications Update Service
Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
Red Hat Enterprise Linux 8.6 Extended Update Support
Memory corruption
Published: 31 Jul 2023
Updated: 14 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.8	High	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0092, the 60th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 31 Jul 2023. New records show when each source confirmed them.

Sources

References from the CNA

access.redhat.com/errata/RHSA-2023:4961 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:4962 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:4967 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:5069 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:5091 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:5093 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:5221 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:5244 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:5255 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:5548 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:5627 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7382 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7389 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7411 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7417 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7431 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7434 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2023-4004 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2225275 issue-trackingredhat
patchwork.ozlabs.org/project/netfilter-devel/patch/[email protected]/

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.