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CVE Record

CVE-2024-26839: IB/hfi1: Fix a memleak in init_credit_return

In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fix a memleak in init_credit_return When dma_alloc_coherent fails to allocate dd->cr_base[i].va, init_credit_return should deallocate dd->cr_base and dd->cr_base[i] that allocated before. Or those resources would be never freed and a memleak is triggered.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue is a memory leak in the IB/hfi1 component. If a DMA memory allocation fails during credit-return initialization, earlier allocations may not be freed. The available sources do not show data theft, code execution, privilege escalation, or active exploitation.

Executive priority

Treat as routine kernel maintenance unless IB/hfi1 is used in sensitive or high-availability environments. There is no source-backed evidence of exploitation, but unpatched kernel resource leaks can still affect reliability.

Technical view

CVE-2024-26839 fixes cleanup logic in init_credit_return for IB/hfi1. When dma_alloc_coherent fails for dd->cr_base[i].va, previously allocated dd->cr_base and earlier entries must be deallocated. Linux stable commits and Debian LTS notices are the cited remediation sources.

Likely exposure

Exposure appears limited to affected Linux kernels where the IB/hfi1 kernel component is present and relevant. The bundle lists Linux kernel versions and stable commit references, but does not provide CPEs, CVSS scoring, or deployment prevalence.

Exploitation context

CISA KEV status is false, and the provided sources do not cite active exploitation. The described condition depends on an allocation failure path and results in leaked kernel resources, not a documented direct compromise path.

Researcher notes

The evidence supports a memory leak in an error cleanup path, not broader impact. Severity data is incomplete: no CVSS, CWE, CPEs, or exploitability analysis are provided in the bundle.

Mitigation direction

  • Apply kernel updates containing the referenced Linux stable fixes.
  • Use distribution security updates where available, including Debian LTS guidance.
  • Prioritize systems running affected Linux kernels with IB/hfi1 enabled or required.
  • Check vendor advisories if kernel version mapping is unclear.

Validation and detection

  • Inventory Linux kernel versions across relevant servers and appliances.
  • Check whether the IB/hfi1 component is present or loaded.
  • Confirm installed kernels include the relevant stable commit or distribution fix.
  • Review Debian LTS notices if using Debian-derived long-term support builds.
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-2024-26839 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
11Source 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
LinuxLinux7724105686e718ac476a6ad3304fea2fbcfcffde, 7724105686e718ac476a6ad3304fea2fbcfcffde, 7724105686e718ac476a6ad3304fea2fbcfcffde, 7724105686e718ac476a6ad3304fea2fbcfcffde, 7724105686e718ac476a6ad3304fea2fbcfcffde, 7724105686e718ac476a6ad3304fea2fbcfcffde, 7724105686e718ac476a6ad3304fea2fbcfcffde, 7724105686e718ac476a6ad3304fea2fbcfcffdeunaffected
LinuxLinux4.3, 0, 4.19.308, 5.4.270, 5.10.211, 5.15.150, 6.1.80, 6.6.19, 6.7.7, 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.