CVE-2022-48666

Kernel memory corruption via premature SCSI teardown

Published Apr 28, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel SCSI core allows local users to trigger an invalid kernel-memory read during SCSI host removal. scsi_remove_host() can return and release SCSI-host resources before .exit_cmd_priv callbacks finish freeing tagged requests that still use them. Reachability requires a local teardown path using a host-specific .exit_cmd_priv implementation such as ib_srp; the demonstrated result is a KASAN-detected eight-byte invalid read.

CVSS severity7.4
High
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel SCSI core allows local users to trigger an invalid kernel-memory read during SCSI host removal. scsi_remove_host() can return and release SCSI-host resources before .exit_cmd_priv callbacks finish freeing tagged requests that still use them. Reachability requires a local teardown path using a host-specific .exit_cmd_priv implementation such as ib_srp; the demonstrated result is a KASAN-detected eight-byte invalid read.

The record

CVE
CVE-2022-48666
Published
Apr 28, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.7
  2. Affected versionversion=65ca846a53149a1a72cd8d02e7b2e73dd545b834 <2e7eb4c1e8af8385de22775bd0be552f59b28c9a
  3. Affected versionversion=65ca846a53149a1a72cd8d02e7b2e73dd545b834 <5ce8fad941233e81f2afb5b52a3fcddd3ba8732f
  4. Affected versionversion=65ca846a53149a1a72cd8d02e7b2e73dd545b834 <8fe4ce5836e932f5766317cb651c1ff2a4cd0506
  5. Affected versionversion=65ca846a53149a1a72cd8d02e7b2e73dd545b834 <f818708eeeae793e12dc39f8984ed7732048a7d9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.7; version=65ca846a53149a1a72cd8d02e7b2e73dd545b834 <2e7eb4c1e8af8385de22775bd0be552f59b28c9a; version=65ca846a53149a1a72cd8d02e7b2e73dd545b834 <5ce8fad941233e81f2afb5b52a3fcddd3ba8732f; version=65ca846a53149a1a72cd8d02e7b2e73dd545b834 <8fe4ce5836e932f5766317cb651c1ff2a4cd0506; version=65ca846a53149a1a72cd8d02e7b2e73dd545b834 <f818708eeeae793e12dc39f8984ed7732048a7d9
The Linux Kernel Organization · Linux Kernelversion=5.7; version=65ca846a5314 <2e7eb4c1e8af

Published CVSS scores

7.4CISA ADPCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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