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CVE Record

CVE-2024-26776: spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected

In the Linux kernel, the following vulnerability has been resolved: spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected Return IRQ_NONE from the interrupt handler when no interrupt was detected. Because an empty interrupt will cause a null pointer error: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 Call trace: complete+0x54/0x100 hisi_sfc_v3xx_isr+0x2c/0x40 [spi_hisi_sfc_v3xx] __handle_irq_event_percpu+0x64/0x1e0 handle_irq_event+0x7c/0x1cc

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 a HiSilicon SPI flash controller driver. Under an unexpected empty interrupt, the kernel can hit a null pointer dereference and crash. The provided sources do not show remote exploitation, privilege escalation, or confirmed active abuse.

Executive priority

Treat as a targeted kernel stability issue, not a broad emergency. Patch through normal kernel maintenance, with higher priority for appliances, embedded systems, or servers using the affected HiSilicon controller.

Technical view

The hisi-sfc-v3xx interrupt handler failed to return IRQ_NONE when no interrupt was detected. That path could call complete() through a null pointer, producing a kernel NULL pointer dereference. Linux stable commits correct the handler behavior across supported branches.

Likely exposure

Exposure appears limited to Linux systems using the hisi-sfc-v3xx SPI controller driver on relevant HiSilicon hardware or kernels carrying that driver. Generic Linux systems without this hardware or loaded driver are less likely exposed.

Exploitation context

The source bundle marks CISA KEV as false and provides no evidence of active exploitation. The available detail supports a crash or denial-of-service style impact, but does not establish an attacker path or remote trigger.

Researcher notes

Evidence is narrow: the CVE text, Linux stable commits, and Debian LTS notice describe the faulty IRQ handling and fix. The bundle lacks CVSS, CWE, exploitability analysis, and concrete attacker prerequisites.

Mitigation direction

  • Apply vendor or distribution kernel updates containing the referenced Linux stable fixes.
  • Prioritize systems running HiSilicon SFC v3xx hardware or loading spi_hisi_sfc_v3xx.
  • Review Debian LTS guidance if using affected Debian kernel packages.
  • Check vendor advisories before applying local workarounds.

Validation and detection

  • Inventory kernel versions and compare them with vendor fixed releases.
  • Check whether the spi_hisi_sfc_v3xx driver is present or loaded.
  • Review crash logs for hisi_sfc_v3xx_isr null pointer traces.
  • Confirm updated kernels include the stable fix commits.
Prepared
Confidence
medium
Sources
9

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-2024-26776 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
8Source 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
LinuxLinuxa2ca53b52e007de81752bbb443d828f5950d6d04, a2ca53b52e007de81752bbb443d828f5950d6d04, a2ca53b52e007de81752bbb443d828f5950d6d04, a2ca53b52e007de81752bbb443d828f5950d6d04, a2ca53b52e007de81752bbb443d828f5950d6d04, a2ca53b52e007de81752bbb443d828f5950d6d04unaffected
LinuxLinux5.6, 0, 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.