CVE-2024-26627

Local hard lockup via serialized SCSI recovery scans

Published Mar 6, 2024 · Updated May 11, 2026

Denial of service in the SCSI core of affected Linux kernel releases allows local users to cause a hard lockup during error recovery. The scsi_eh_wakeup() path calls scsi_host_busy() while holding the host lock, repeatedly scanning every tagged request and serializing concurrent wakeups. A practical lockup requires large hardware-queue and queue-depth values with all requests in flight; the reported case used mpi3mr with 128 queues at depth 8169.

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

Denial of service in the SCSI core of affected Linux kernel releases allows local users to cause a hard lockup during error recovery. The scsi_eh_wakeup() path calls scsi_host_busy() while holding the host lock, repeatedly scanning every tagged request and serializing concurrent wakeups. A practical lockup requires large hardware-queue and queue-depth values with all requests in flight; the reported case used mpi3mr with 128 queues at depth 8169.

The record

CVE
CVE-2024-26627
Published
Mar 6, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 6, 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=5.5
  2. Affected versionversion=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb
  3. Affected versionversion=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <4373534a9850627a2695317944898eb1283a2db0
  4. Affected versionversion=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <65ead8468c21c2676d4d06f50b46beffdea69df1
  5. Affected versionversion=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <d37c1c81419fdef66ebd0747cf76fb8b7d979059
  6. Affected versionversion=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <db6338f45971b4285ea368432a84033690eaf53c
  7. Affected versionversion=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <f5944853f7a961fedc1227dc8f60393f8936d37c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.5; version=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <07e3ca0f17f579491b5f54e9ed05173d6c1d6fcb; version=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <4373534a9850627a2695317944898eb1283a2db0; version=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <65ead8468c21c2676d4d06f50b46beffdea69df1; version=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <d37c1c81419fdef66ebd0747cf76fb8b7d979059; version=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <db6338f45971b4285ea368432a84033690eaf53c; version=6eb045e092efefafc6687409a6fa6d1dabf0fb69 <f5944853f7a961fedc1227dc8f60393f8936d37c

Published CVSS scores

5.5CISA-ADPCVSS: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

T1499Endpoint Denial of Service

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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