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CVE Record

CVE-2024-26668: netfilter: nft_limit: reject configurations that cause integer overflow

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_limit: reject configurations that cause integer overflow Reject bogus configs where internal token counter wraps around. This only occurs with very very large requests, such as 17gbyte/s. Its better to reject this rather than having incorrect ratelimit.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue affects nftables rate limiting. Extremely large rate-limit configurations can make an internal counter wrap, causing incorrect rate-limit behavior instead of being rejected. The available sources do not show code execution, privilege escalation, data theft, or active exploitation.

Executive priority

Treat as a routine kernel maintenance item unless critical systems rely heavily on nftables rate limiting. Current evidence does not support emergency response, but affected kernels should be updated through normal patch channels.

Technical view

CVE-2024-26668 is an integer overflow condition in Linux netfilter nft_limit. Bogus configurations with very large rates can wrap the internal token counter. The fix rejects configurations that would overflow, preserving correct ratelimit behavior.

Likely exposure

Exposure is most relevant to Linux systems using nftables/netfilter rate limiting on affected kernel builds. The source lists Linux kernel affected versions and stable commit references, but distribution-specific package status is not provided.

Exploitation context

CISA KEV status is false in the provided bundle. The description frames this as a configuration-triggered correctness issue requiring very large requested rates, such as 17 GB/s. No public exploitation evidence is provided.

Researcher notes

The public bundle lacks CVSS, CWE, exploit detail, and distribution mapping. Analysis should stay limited to nft_limit integer overflow and incorrect ratelimit behavior. Validate against exact kernel trees or distribution backports before declaring exposure.

Mitigation direction

  • Apply vendor Linux kernel updates that include the referenced stable fixes.
  • Check distribution advisories for CVE-2024-26668 package status.
  • Review nftables rate-limit configurations for unrealistic very large rates.
  • Prioritize internet-facing gateways and multi-tenant Linux hosts using nftables.

Validation and detection

  • Inventory Linux kernel versions across affected hosts.
  • Confirm installed kernel changelogs reference CVE-2024-26668 or the stable commits.
  • Identify systems using nftables limit expressions.
  • After patching, verify vulnerability scanners no longer report this CVE.
Prepared
Confidence
medium
Sources
7

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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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2024-26668 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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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
6Source 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
LinuxLinuxd2168e849ebf617b2b7feae44c0c0baf739cb610, d2168e849ebf617b2b7feae44c0c0baf739cb610, d2168e849ebf617b2b7feae44c0c0baf739cb610, d2168e849ebf617b2b7feae44c0c0baf739cb610, d2168e849ebf617b2b7feae44c0c0baf739cb610unaffected
LinuxLinux4.3, 0, 5.15.149, 6.1.76, 6.6.15, 6.7.3, 6.8affected
Weakness

CWE details

No CWE listed

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