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CVE Record

CVE-2024-27046: nfp: flower: handle acti_netdevs allocation failure

In the Linux kernel, the following vulnerability has been resolved: nfp: flower: handle acti_netdevs allocation failure The kmalloc_array() in nfp_fl_lag_do_work() will return null, if the physical memory has run out. As a result, if we dereference the acti_netdevs, the null pointer dereference bugs will happen. This patch adds a check to judge whether allocation failure occurs. If it happens, the delayed work will be rescheduled and try again.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel reliability flaw in the nfp flower networking driver. If memory allocation fails in a specific delayed work path, the kernel can dereference a null pointer. The available sources point to a crash or denial-of-service risk, not data theft or remote code execution.

Executive priority

Treat as a targeted kernel availability issue. Patch during normal Linux kernel maintenance, faster for infrastructure using Netronome/NFP networking features or systems where kernel crashes would create service-impacting outages.

Technical view

CVE-2024-27046 fixes missing error handling after kmalloc_array() in nfp_fl_lag_do_work(). When allocation of acti_netdevs fails, later dereference can cause a null pointer dereference. The fix checks allocation failure and reschedules delayed work to retry.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions with the nfp flower driver code path relevant to LAG handling. The source bundle lists affected Linux kernel lines including 4.18 and multiple stable branches through 6.9, with default status affected for listed releases.

Exploitation context

The bundle does not show CISA KEV listing, public exploitation, or exploit details. The condition depends on allocation failure, so practical impact is most clearly local system instability or kernel crash under relevant driver and memory-pressure conditions.

Researcher notes

The evidence supports a missing allocation-failure check, not a broad remotely exploitable flaw. No CVSS, CWE, or KEV signal is provided. Validate exposure by mapping kernel backports and actual nfp flower/LAG feature use rather than relying only on upstream version numbers.

Mitigation direction

  • Update to a vendor kernel containing the referenced stable fixes.
  • Prioritize systems using the nfp flower driver or related LAG offload paths.
  • Check Debian LTS advisories if running affected Debian-based kernels.
  • If no vendor package is available, track vendor kernel guidance.
  • Plan reboot or live-patch procedures according to kernel update policy.

Validation and detection

  • Inventory running kernel versions against the affected version list.
  • Confirm whether nfp flower driver functionality is present or loaded.
  • Verify the vendor kernel includes a backport for CVE-2024-27046.
  • Review kernel logs for nfp_fl_lag_do_work null dereference crashes.
  • Confirm patched systems boot the expected updated kernel.
Prepared
Confidence
medium
Sources
12

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-2024-27046 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
12Source 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

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxbb9a8d031140f186d13d82f57b0f5646d596652f, bb9a8d031140f186d13d82f57b0f5646d596652f, bb9a8d031140f186d13d82f57b0f5646d596652f, bb9a8d031140f186d13d82f57b0f5646d596652f, bb9a8d031140f186d13d82f57b0f5646d596652f, bb9a8d031140f186d13d82f57b0f5646d596652f, bb9a8d031140f186d13d82f57b0f5646d596652f, bb9a8d031140f186d13d82f57b0f5646d596652f, bb9a8d031140f186d13d82f57b0f5646d596652funaffected
LinuxLinux4.18, 0, 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 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.