CVE-2024-42294

System hang via SCSI disk teardown deadlock

Published Aug 17, 2024 · Updated May 11, 2026

Improper locking in the Linux kernel allows local users to hang storage operations by racing SCSI disk removal with release. sd_remove freezes the block queue before taking disk->open_mutex, while sd_release holds that mutex and waits to enter the frozen queue, creating an ABBA deadlock. Triggering the race requires local access to concurrent SCSI disk removal and block-device release paths; affected tasks remain blocked and storage work stops.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Linux kernel allows local users to hang storage operations by racing SCSI disk removal with release. sd_remove freezes the block queue before taking disk->open_mutex, while sd_release holds that mutex and waits to enter the frozen queue, creating an ABBA deadlock. Triggering the race requires local access to concurrent SCSI disk removal and block-device release paths; affected tasks remain blocked and storage work stops.

The record

CVE
CVE-2024-42294
Published
Aug 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.5
  2. Affected versionversion=eec1be4c30df73238b936fa9f3653773a6f8b15c <5a5625a83eac91fdff1d5f0202ecfc45a31983c9
  3. Affected versionversion=eec1be4c30df73238b936fa9f3653773a6f8b15c <7e04da2dc7013af50ed3a2beb698d5168d1e594b
  4. Affected versionversion=eec1be4c30df73238b936fa9f3653773a6f8b15c <f5418f48a93b69ed9e6a2281eee06b412f14a544

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.5; version=eec1be4c30df73238b936fa9f3653773a6f8b15c <5a5625a83eac91fdff1d5f0202ecfc45a31983c9; version=eec1be4c30df73238b936fa9f3653773a6f8b15c <7e04da2dc7013af50ed3a2beb698d5168d1e594b; version=eec1be4c30df73238b936fa9f3653773a6f8b15c <f5418f48a93b69ed9e6a2281eee06b412f14a544

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-667Improper Locking
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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