Description
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.
Published: 2023-07-31
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Workaround

This flaw can be mitigated by preventing the affected netfilter kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3623-1 linux-5.10 security update
Debian DSA Debian DSA DSA-5480-1 linux security update
Debian DSA Debian DSA DSA-5492-1 linux security update
EUVD EUVD EUVD-2023-53899 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.
Ubuntu USN Ubuntu USN USN-6315-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6316-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6318-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6321-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6325-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6328-1 Linux kernel (Oracle) vulnerabilities
Ubuntu USN Ubuntu USN USN-6330-1 Linux kernel (GCP) vulnerabilities
Ubuntu USN Ubuntu USN USN-6332-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-6348-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6385-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6442-1 Linux kernel (BlueField) vulnerabilities
References
Link Providers
http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html cve-icon
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html cve-icon
https://access.redhat.com/errata/RHSA-2023:4961 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:4962 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:4967 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:5069 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:5091 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:5093 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:5221 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:5244 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:5255 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:5548 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:5627 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7382 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7389 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7411 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7417 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7431 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2023:7434 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2023-4004 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2225275 cve-icon cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-794697.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-831302.html cve-icon
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-4004 cve-icon
https://patchwork.ozlabs.org/project/netfilter-devel/patch/20230719190824.21196-1-fw@strlen.de/ cve-icon cve-icon cve-icon
https://security.netapp.com/advisory/ntap-20231027-0001/ cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-4004 cve-icon
https://www.debian.org/security/2023/dsa-5480 cve-icon
https://www.debian.org/security/2023/dsa-5492 cve-icon
History

Sat, 07 Nov 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:rhel_els:6
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els

Wed, 14 Oct 2026 22:30:00 +0000


Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00015}

epss

{'score': 0.00016}


Fri, 22 Nov 2024 12:00:00 +0000


Fri, 13 Sep 2024 19:45:00 +0000


Subscriptions

Debian Debian Linux
Fedoraproject Fedora
Linux Linux Kernel
Netapp H300s H410s H500s H700s
Redhat Enterprise Linux Rhel Aus Rhel E4s Rhel Els Rhel Eus Rhel Tus Rhev Hypervisor
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-11-07T11:32:55.049Z

Reserved: 2023-07-30T11:58:17.241Z

Link: CVE-2023-4004

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-07-31T17:15:10.203

Modified: 2026-10-14T22:17:16.357

Link: CVE-2023-4004

cve-icon Redhat

Severity : Important

Publid Date: 2023-07-19T00:00:00Z

Links: CVE-2023-4004 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses