CVE-2024-46843

Kernel panic via unguarded SCSI host removal

Published Sep 27, 2024 · Updated May 11, 2026

Denial of service in Linux allows local users to trigger a kernel panic during UFS driver removal when MCQ is enabled. In ufshcd_remove(), the teardown path calls scsi_remove_host() even when ufshcd_async_scan() failed before scsi_add_host() registered the host. Reachability requires an MCQ-enabled UFS device, an asynchronous scan failure during probe, and subsequent removal of the ufshcd driver; the documented consequence is a host crash.

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 Linux allows local users to trigger a kernel panic during UFS driver removal when MCQ is enabled. In ufshcd_remove(), the teardown path calls scsi_remove_host() even when ufshcd_async_scan() failed before scsi_add_host() registered the host. Reachability requires an MCQ-enabled UFS device, an asynchronous scan failure during probe, and subsequent removal of the ufshcd driver; the documented consequence is a host crash.

The record

CVE
CVE-2024-46843
Published
Sep 27, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 27, 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=0cab4023ec7b49b18145f74ab8389678d6d58878 <2f49e05d6b58d660f035a75ff96b77071b4bd5ed
  2. Affected versionversion=0cab4023ec7b49b18145f74ab8389678d6d58878 <3844586e9bd9845140e1078f1e61896b576ac536
  3. Affected versionversion=0cab4023ec7b49b18145f74ab8389678d6d58878 <7cbff570dbe8907e23bba06f6414899a0fbb2fcc
  4. Affected versionversion=6.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=0cab4023ec7b49b18145f74ab8389678d6d58878 <2f49e05d6b58d660f035a75ff96b77071b4bd5ed; version=0cab4023ec7b49b18145f74ab8389678d6d58878 <3844586e9bd9845140e1078f1e61896b576ac536; version=0cab4023ec7b49b18145f74ab8389678d6d58878 <7cbff570dbe8907e23bba06f6414899a0fbb2fcc; version=6.3

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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