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CVE Record

CVE-2024-27064: netfilter: nf_tables: Fix a memory leak in nf_tables_updchain

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix a memory leak in nf_tables_updchain If nft_netdev_register_hooks() fails, the memory associated with nft_stats is not freed, causing a memory leak. This patch fixes it by moving nft_stats_alloc() down after nft_netdev_register_hooks() succeeds.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2024-27064 is a Linux kernel memory leak in the nf_tables firewall subsystem. If a netdev hook registration fails while updating a chain, allocated statistics memory is not released. The public record describes a stability/resource leak issue, not data theft or code execution.

Executive priority

Treat as routine kernel maintenance unless vendor guidance raises severity. There is no provided evidence of active exploitation, but kernel memory leaks can affect availability, especially on firewall or network-control systems.

Technical view

The bug is in nf_tables_updchain. nft_stats could be allocated before nft_netdev_register_hooks succeeds; on registration failure, that allocation was not freed. The kernel fix moves nft_stats_alloc after successful hook registration, removing the leak path.

Likely exposure

Exposure is most relevant to Linux systems running affected kernel versions with nf_tables/netfilter functionality present. The source bundle lists affected Linux version data, but distribution kernels may carry backported fixes, so package-level status must be confirmed with the OS vendor.

Exploitation context

The CVE is not listed as KEV, and the provided sources do not report active exploitation, public exploit use, or remote unauthenticated attack details. Evidence supports a memory-leak condition on a specific failure path.

Researcher notes

The public record lacks CVSS, CWE, and exploitability detail. Analysis should focus on the failing nft_netdev_register_hooks path and whether local configuration or privileges are required to trigger chain updates on the target platform.

Mitigation direction

  • Update to a vendor kernel containing the nf_tables memory-leak fix.
  • Confirm whether your distribution backported one of the referenced stable fixes.
  • Prioritize exposed firewall hosts and systems heavily using nftables.
  • If update timing is constrained, monitor kernel memory pressure until patched.

Validation and detection

  • Inventory Linux kernel versions across servers, containers hosts, and appliances.
  • Check vendor advisories for CVE-2024-27064 package status.
  • Verify fixed builds include the referenced stable kernel commit.
  • Review whether nf_tables/nftables is enabled or used on affected systems.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2024-27064 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
2ADP providers
5Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxb9703ed44ffbfba85c103b9de01886a225e14b38, b9703ed44ffbfba85c103b9de01886a225e14b38, b9703ed44ffbfba85c103b9de01886a225e14b38, b9703ed44ffbfba85c103b9de01886a225e14b38, d131ce7a319d3bff68d5a9d5509bb22e4ce33946, 6.3.3unaffected
LinuxLinux6.4, 0, 6.6.23, 6.7.11, 6.8.2, 6.9affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.