Use-after-free in Linux kernel's netfilter: nf_tables component

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2023-4244
StatePUBLISHED
AssignerGoogle
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-09-06 14:15:11 UTC
Updated2026-07-30 19:14:53 UTC
DescriptionA use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability. We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from [email protected]

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

EPSS: 0.002200000 probability, percentile 0.125830000 (date 2026-07-29)

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7HIGHCVSS:3.1/AV:L/AC:H/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
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/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 Linux Kernel affected 0.0 4.19.316 custom Not specified
CNA Linux Kernel affected 4.20 5.4.262 custom Not specified
CNA Linux Kernel affected 5.5 5.10.198 custom Not specified
CNA Linux Kernel affected 5.11 5.15.134 custom Not specified
CNA Linux Kernel affected 5.16 6.1.56 custom Not specified
CNA Linux Kernel affected 6.2 6.4.11 custom Not specified

References

ReferenceSourceLinkTags
[SECURITY] [DLA 3623-1] linux-5.10 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Issue Tracking, Mailing List, Patch, Vendor Advisory
kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8 af854a3a-2127-422b-91ae-364da2661108 kernel.dance Patch, Vendor Advisory
lists.debian.org/debian-lts-announce/2024/01/msg00004.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Bien Pham from Team Orca of Sea Security Team (en)

Legacy QID Mappings

  • 161237 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-13043)
  • 161344 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel-container (ELSA-2024-12153)
  • 161345 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel-container (ELSA-2024-12154)
  • 161347 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2024-12151)
  • 161417 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-1248)
  • 199841 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6444-1)
  • 199844 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6445-1)
  • 199847 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6443-1)
  • 199848 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6446-1)
  • 199858 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6445-2)
  • 199859 Ubuntu Security Notification for Linux kernel (StarFive) Vulnerabilities (USN-6444-2)
  • 199861 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6446-2)
  • 199868 Ubuntu Security Notification for Linux kernel (Oracle) Vulnerabilities (USN-6446-3)
  • 199881 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6461-1)
  • 199883 Ubuntu Security Notification for Linux kernel (NVIDIA) Vulnerabilities (USN-6466-1)
  • 199938 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6503-1)
  • 199982 Ubuntu Security Notification for Linux kernel (GCP) Vulnerability (USN-6537-1)
  • 200171 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6681-1)
  • 200183 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6681-2)
  • 200192 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6681-3)
  • 200203 Ubuntu Security Notification for Linux kernel (AWS) Vulnerabilities (USN-6681-4)
  • 200221 Ubuntu Security Notification for Linux kernel (Azure) Vulnerabilities (USN-6716-1)
  • 242985 Red Hat Update for kernel (RHSA-2024:1018)
  • 242986 Red Hat Update for kernel-rt (RHSA-2024:1019)
  • 243052 Red Hat Update for kernel (RHSA-2024:1248)
  • 356530 Amazon Linux Security Advisory for kernel : ALAS2023-2023-385
  • 356569 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.15-2023-028
  • 356612 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2023-042
  • 6000265 Debian Security Update for linux-5.10 (DLA 3623-1)
  • 6000429 Debian Security Update for linux (DLA 3710-1)
  • 6140275 AWS Bottlerocket Security Update for kernel (GHSA-rmmr-77h8-w26x)
  • 6140298 AWS Bottlerocket Security Update for kernel (GHSA-gg8j-j5j9-mhrh)
  • 673595 EulerOS Security Update for kernel (EulerOS-SA-2023-3247)
  • 673692 EulerOS Security Update for kernel (EulerOS-SA-2023-3275)
  • 907595 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (28676-1)

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report