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

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Summary

CVECVE-2023-4004
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-07-31 17:15:10 UTC
Updated2026-10-14 22:17:16 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

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

Problem Types: CWE-416 | CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.18.0-477.27.1.rt7.290.el8_8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.18.0-477.27.1.el8_8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support unaffected 0:4.18.0-193.119.1.el8_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service unaffected 0:4.18.0-193.119.1.rt13.170.el8_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service unaffected 0:4.18.0-193.119.1.el8_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.2 Update Services For SAP Solutions Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8.2 Update Services For SAP Solutions unaffected 0:4.18.0-193.119.1.el8_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support unaffected 0:4.18.0-305.103.1.el8_4 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service unaffected 0:4.18.0-305.103.1.rt7.178.el8_4 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service unaffected 0:4.18.0-305.103.1.el8_4 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Update Services For SAP Solutions unaffected 0:4.18.0-305.103.1.el8_4 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Update Services For SAP Solutions Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support unaffected 0:4.18.0-372.75.1.el8_6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-284.30.1.el9_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-284.30.1.rt14.315.el9_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:5.14.0-284.30.1.el9_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support unaffected 0:5.14.0-70.80.1.el9_0 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support unaffected 0:5.14.0-70.80.1.rt21.151.el9_0 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support Not specified Not specified
CNA Red Hat Red Hat Virtualization 4 For Red Hat Enterprise Linux 8 unaffected 0:4.18.0-372.75.1.el8_6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected V1.1 custom Not specified

References

ReferenceSourceLinkTags
2225275 – (CVE-2023-4004) CVE-2023-4004 kernel: netfilter: nft_set_pipapo: improper element removal in function nft_pipapo_remove when insert an element without a NFT_SET_EXT_KEY_END that can lead to use-after-free af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Kernel Live Patch Security Notice LSN-0098-1 ≈ Packet Storm af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Debian -- Security Information -- DSA-5492-1 linux af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
[SECURITY] [DLA 3623-1] linux-5.10 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
Debian -- Security Information -- DSA-5480-1 linux af854a3a-2127-422b-91ae-364da2661108 www.debian.org
cert-portal.siemens.com/productcert/html/ssa-831302.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
access.redhat.com/errata/RHSA-2023:7382 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
access.redhat.com/errata/RHSA-2023:7431 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory, VDB Entry
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
access.redhat.com/errata/RHSA-2023:7434 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory, VDB Entry
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Broken Link, Third Party Advisory
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
CVE-2023-4004 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
access.redhat.com/errata/RHSA-2023:7389 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-794697.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
[nf] netfilter: nft_set_pipapo: fix improper element removal - Patchwork af854a3a-2127-422b-91ae-364da2661108 patchwork.ozlabs.org Mailing List, Patch, Third Party Advisory
packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com
access.redhat.com/errata/RHSA-2023:7411 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory, VDB Entry
access.redhat.com/errata/RHSA-2023:7417 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory, VDB Entry
cve-details af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2023-07-24T00:00:00.000ZReported to Red Hat.
CNA2023-07-19T00:00:00.000ZMade public.

Workarounds

CNA: 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.

Legacy QID Mappings

  • 160912 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-5069)
  • 160934 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-5244)
  • 199764 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6385-1)
  • 199845 Ubuntu Security Notification for Linux kernel (BlueField) Vulnerabilities (USN-6442-1)
  • 242062 Red Hat Update for kpatch-patch (RHSA-2023:5221)
  • 242070 Red Hat Update for kernel security (RHSA-2023:5244)
  • 242075 Red Hat Update for kernel-rt (RHSA-2023:5255)
  • 242141 Red Hat Update for kpatch-patch (RHSA-2023:5548)
  • 242151 Red Hat Update for kernel security (RHSA-2023:5627)
  • 242481 Red Hat Update for kernel (RHSA-2023:7382)
  • 242483 Red Hat Update for kernel-rt (RHSA-2023:7389)
  • 242489 Red Hat Update for kpatch-patch (RHSA-2023:7411)
  • 242496 Red Hat Update for kpatch-patch (RHSA-2023:7417)
  • 242500 Red Hat Update for kernel-rt (RHSA-2023:7431)
  • 242504 Red Hat Update for kernel (RHSA-2023:7434)
  • 356571 Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2023-155
  • 378892 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0114)
  • 379043 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0136)
  • 6000212 Debian Security Update for linux (DSA 5480-1)
  • 6000220 Debian Security Update for linux (DSA 5492-1)
  • 6000265 Debian Security Update for linux-5.10 (DLA 3623-1)
  • 6140055 AWS Bottlerocket Security Update for kernel (GHSA-p683-h62f-x788)
  • 673484 EulerOS Security Update for kernel (EulerOS-SA-2023-3033)
  • 673732 EulerOS Security Update for kernel (EulerOS-SA-2023-3010)
  • 755107 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4095-1)
  • 755135 SUSE Enterprise Linux Security Update for the Linux Kernel RT (Live Patch 5 for SLE 15 SP4) (SUSE-SU-2023:4166-1)
  • 755140 SUSE Enterprise Linux Security Update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP5) (SUSE-SU-2023:4175-1)
  • 755154 SUSE Enterprise Linux Security Update for the Linux Kernel RT (Live Patch 3 for SLE 15 SP4) (SUSE-SU-2023:4201-1)
  • 755168 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 33 for SLE 15 SP3) (SUSE-SU-2023:4219-1)
  • 755178 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 36 for SLE 15 SP3) (SUSE-SU-2023:4261-1)
  • 755179 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 35 for SLE 15 SP3) (SUSE-SU-2023:4260-1)
  • 755184 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 29 for SLE 15 SP3) (SUSE-SU-2023:4239-1)
  • 755186 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 4 for SLE 15 SP4) (SUSE-SU-2023:4267-1)
  • 755192 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 7 for SLE 15 SP4) (SUSE-SU-2023:4285-1)
  • 755210 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 8 for SLE 15 SP4) (SUSE-SU-2023:4308-1)
  • 755212 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 0 for SLE 15 SP5) (SUSE-SU-2023:4326-1)
  • 755214 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 15 for SLE 15 SP4) (SUSE-SU-2023:4322-1)
  • 941249 AlmaLinux Security Update for kernel (ALSA-2023:5069)
  • 941254 AlmaLinux Security Update for kernel-rt (ALSA-2023:5091)
  • 941276 AlmaLinux Security Update for kernel (ALSA-2023:5244)
  • 961015 Rocky Linux Security Update for kernel-rt (RLSA-2023:5091)
  • 961022 Rocky Linux Security Update for kernel (RLSA-2023:5244)

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