CVE-2024-26776

Kernel crash via empty interrupt completion

Published Apr 3, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel hisi-sfc-v3xx SPI driver from 5.6 allows local users to crash the kernel via an empty interrupt. The hisi_sfc_v3xx_isr handler treats a zero interrupt-status register as handled and calls complete() through an unset completion pointer. The documented failure requires the affected driver and an empty hardware interrupt; no data access or modification is reported.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel hisi-sfc-v3xx SPI driver from 5.6 allows local users to crash the kernel via an empty interrupt. The hisi_sfc_v3xx_isr handler treats a zero interrupt-status register as handled and calls complete() through an unset completion pointer. The documented failure requires the affected driver and an empty hardware interrupt; no data access or modification is reported.

The record

CVE
CVE-2024-26776
Published
Apr 3, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.6
  2. Affected versionversion=a2ca53b52e007de81752bbb443d828f5950d6d04 <0399d7eba41d9b28f5bdd7757ec21a5b7046858d
  3. Affected versionversion=a2ca53b52e007de81752bbb443d828f5950d6d04 <d637b5118274701e8448f35953877daf04df18b4
  4. Affected versionversion=a2ca53b52e007de81752bbb443d828f5950d6d04 <de8b6e1c231a95abf95ad097b993d34b31458ec9
  5. Affected versionversion=a2ca53b52e007de81752bbb443d828f5950d6d04 <e4168ac25b4bd378bd7dda322d589482a136c1fd
  6. Affected versionversion=a2ca53b52e007de81752bbb443d828f5950d6d04 <e94da8aca2e78ef9ecca02eb211869eacd5504e5
  7. Affected versionversion=a2ca53b52e007de81752bbb443d828f5950d6d04 <f19361d570c67e7e014896fa2dacd7d721bf0aa8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.6; version=a2ca53b52e007de81752bbb443d828f5950d6d04 <0399d7eba41d9b28f5bdd7757ec21a5b7046858d; version=a2ca53b52e007de81752bbb443d828f5950d6d04 <d637b5118274701e8448f35953877daf04df18b4; version=a2ca53b52e007de81752bbb443d828f5950d6d04 <de8b6e1c231a95abf95ad097b993d34b31458ec9; version=a2ca53b52e007de81752bbb443d828f5950d6d04 <e4168ac25b4bd378bd7dda322d589482a136c1fd; version=a2ca53b52e007de81752bbb443d828f5950d6d04 <e94da8aca2e78ef9ecca02eb211869eacd5504e5; version=a2ca53b52e007de81752bbb443d828f5950d6d04 <f19361d570c67e7e014896fa2dacd7d721bf0aa8

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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