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

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Summary

CVECVE-2023-3777
StatePUBLISHED
AssignerGoogle
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-09-06 14:15:10 UTC
Updated2026-10-14 22:17:15 UTC
DescriptionA use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances. We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.

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 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 Linux Kernel affected 5.9 6.5 custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected V1.1 custom Not specified

References

ReferenceSourceLinkTags
Kernel Live Patch Security Notice LSN-0098-1 ≈ Packet Storm af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com Third Party Advisory, VDB Entry
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Issue Tracking, Mailing List, Patch, Vendor Advisory
Debian -- Security Information -- DSA-5492-1 linux af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
kernel.dance/6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8 af854a3a-2127-422b-91ae-364da2661108 kernel.dance Patch, Vendor Advisory
cert-portal.siemens.com/productcert/html/ssa-794697.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com Third Party Advisory, VDB Entry
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: Kevin Rich (en)

Legacy QID Mappings

  • 161318 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-12094)
  • 161404 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-0461)
  • 199764 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6385-1)
  • 242759 Red Hat Update for kernel (RHSA-2024:0432)
  • 242839 Red Hat Update for kernel (RHSA-2024:0461)
  • 242845 Red Hat Update for kernel (RHSA-2024:0448)
  • 242846 Red Hat Update for kernel-rt (RHSA-2024:0439)
  • 242847 Red Hat Update for kernel-rt (RHSA-2024:0431)
  • 356571 Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2023-155
  • 6000220 Debian Security Update for linux (DSA 5492-1)
  • 6120009 Google COS Security Update for sys-kernel/lakitu-kernel-6_1 (CVE-2023-3777)
  • 6140371 AWS Bottlerocket Security Update for kernel (GHSA-7mhm-4p54-xrvq)
  • 673595 EulerOS Security Update for kernel (EulerOS-SA-2023-3247)
  • 673692 EulerOS Security Update for kernel (EulerOS-SA-2023-3275)
  • 755238 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4378-1)
  • 755240 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4375-1)
  • 755249 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:4414-1)
  • 755397 SUSE Enterprise Linux Security Update for the Linux Kernel RT (Live Patch 7 for SLE 15 SP5) (SUSE-SU-2023:4781-1)
  • 755398 SUSE Enterprise Linux Security Update for the Linux Kernel RT (Live Patch 6 for SLE 15 SP5) (SUSE-SU-2023:4776-1)
  • 755422 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 37 for SLE 15 SP3) (SUSE-SU-2023:4839-1)
  • 755465 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 6 for SLE 15 SP5) (SUSE-SU-2023:4867-1)
  • 755563 SUSE Security Update for the linux kernel (SUSE-SU-2023:4351-1)
  • 755564 SUSE Security Update for the linux kernel (SUSE-SU-2023:4348-1)
  • 755566 SUSE Security Update for the linux kernel (SUSE-SU-2023:4345-1)

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