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CVE Record

CVE-2024-26684: net: stmmac: xgmac: fix handling of DPP safety error for DMA channels

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: xgmac: fix handling of DPP safety error for DMA channels Commit 56e58d6c8a56 ("net: stmmac: Implement Safety Features in XGMAC core") checks and reports safety errors, but leaves the Data Path Parity Errors for each channel in DMA unhandled at all, lead to a storm of interrupt. Fix it by checking and clearing the DMA_DPP_Interrupt_Status register.

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 network-driver flaw that can cause repeated interrupts when certain stmmac XGMAC DMA safety errors occur. The business impact is likely availability degradation on affected systems, especially embedded, appliance, or server platforms using that Ethernet hardware. The public record does not provide CVSS severity or active exploitation evidence.

Executive priority

Treat this as a targeted availability-risk patch, not a broad emergency. Prioritize affected Linux network infrastructure and embedded systems during normal security maintenance, escalating where outages from network-driver interrupt storms would affect operations.

Technical view

The stmmac XGMAC safety-error implementation reported Data Path Parity errors but did not handle per-channel DMA DPP interrupt status. The fix checks and clears the DMA_DPP_Interrupt_Status register, preventing an interrupt storm. Exposure depends on kernels containing the affected code path and hardware using the stmmac XGMAC driver.

Likely exposure

Most exposed assets are Linux systems using Synopsys DesignWare stmmac XGMAC Ethernet hardware and kernels with the affected safety-feature commit. Generic Linux servers without this driver or hardware are less likely exposed. The source bundle lists Linux kernel stable references and a Debian LTS advisory.

Exploitation context

CISA KEV is false, and the provided sources do not claim active exploitation. The described failure mode is an interrupt storm after DMA DPP safety errors. The sources do not establish remote exploitability or provide a practical attacker trigger.

Researcher notes

The public data is precise about the bug and fix but sparse on severity, triggerability, and real-world exploitation. Validate exposure by hardware and driver path, not by Linux presence alone. Avoid assuming remote attack until vendor analysis supports it.

Mitigation direction

  • Apply vendor or distribution kernel updates containing the referenced stable fixes.
  • Review Debian LTS guidance if running Debian-packaged kernels.
  • Prioritize network appliances, embedded Linux, and hosts using stmmac XGMAC hardware.
  • If no update is available, check vendor guidance for supported mitigation options.

Validation and detection

  • Inventory kernels and identify systems using the stmmac XGMAC driver.
  • Confirm installed kernels include the relevant stable fix commit or vendor backport.
  • Review kernel logs for stmmac, XGMAC, DMA, safety, or DPP interrupt messages.
  • Monitor interrupt counters for abnormal growth on affected network devices.
Prepared
Confidence
medium
Sources
10

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-2024-26684 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
9Source 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
LinuxLinux56e58d6c8a5640eb708e85866e9d243d0357ee54, 56e58d6c8a5640eb708e85866e9d243d0357ee54, 56e58d6c8a5640eb708e85866e9d243d0357ee54, 56e58d6c8a5640eb708e85866e9d243d0357ee54, 56e58d6c8a5640eb708e85866e9d243d0357ee54, 56e58d6c8a5640eb708e85866e9d243d0357ee54, 56e58d6c8a5640eb708e85866e9d243d0357ee54unaffected
LinuxLinux5.4, 0, 5.4.269, 5.10.210, 5.15.149, 6.1.78, 6.6.17, 6.7.5, 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.