CVE-2026-43413

Kernel crash via invalid hisi_sas channel scan

Published May 8, 2026 · Updated May 8, 2026

NULL pointer dereference in the Linux kernel hisi_sas SCSI driver allows local users to crash the kernel through a sysfs host scan. Because hisi_sas supports only channel 0 while max_channel is 1, sas_user_scan() iterates to channel 1 and sas_find_dev_by_rphy() dereferences a null device pointer. Triggering the Oops requires local write access to the SCSI host scan sysfs attribute on a system using the hisi_sas driver, and the demonstrated consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.12%
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_sas SCSI driver allows local users to crash the kernel through a sysfs host scan. Because hisi_sas supports only channel 0 while max_channel is 1, sas_user_scan() iterates to channel 1 and sas_find_dev_by_rphy() dereferences a null device pointer. Triggering the Oops requires local write access to the SCSI host scan sysfs attribute on a system using the hisi_sas driver, and the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2026-43413
Published
May 8, 2026
Updated
May 8, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 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=4.13
  2. Affected versionversion=e21fe3a52692f554efd67957c772c702de627a3a <21a13db8d449b9c7eda4471da7f12417602dbbc7
  3. Affected versionversion=e21fe3a52692f554efd67957c772c702de627a3a <40119a21d9769bf8fdab5c93c6c878296e628abf
  4. Affected versionversion=e21fe3a52692f554efd67957c772c702de627a3a <70c78429ef383e35f9c58848994aeeac8083ae35
  5. Affected versionversion=e21fe3a52692f554efd67957c772c702de627a3a <8ddc0c26916574395447ebf4cff684314f6873a9
  6. Affected versionversion=e21fe3a52692f554efd67957c772c702de627a3a <beadac156610a4f3bb15cb7bb4b07b6ac06f6567

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.13; version=e21fe3a52692f554efd67957c772c702de627a3a <21a13db8d449b9c7eda4471da7f12417602dbbc7; version=e21fe3a52692f554efd67957c772c702de627a3a <40119a21d9769bf8fdab5c93c6c878296e628abf; version=e21fe3a52692f554efd67957c772c702de627a3a <70c78429ef383e35f9c58848994aeeac8083ae35; version=e21fe3a52692f554efd67957c772c702de627a3a <8ddc0c26916574395447ebf4cff684314f6873a9; version=e21fe3a52692f554efd67957c772c702de627a3a <beadac156610a4f3bb15cb7bb4b07b6ac06f6567

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
T1499.004Application or System Exploitation

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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