CVE-2022-48792

Local kernel compromise via completion-order use-after-free

Published Jul 16, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel pm8001 driver allows local users to corrupt kernel memory through aborted SAS I/O. In mpi_ssp_completion() and mpi_sata_completion(), complete() lets the upper layer free sas_task before pm8001_ccb_task_free() accesses it. Access to storage backed by the pm8001 HBA is required; successful exploitation crashes the host or enables kernel-level data access and code execution.

CVSS severity7.8
High
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

Use-after-free in the Linux kernel pm8001 driver allows local users to corrupt kernel memory through aborted SAS I/O. In mpi_ssp_completion() and mpi_sata_completion(), complete() lets the upper layer free sas_task before pm8001_ccb_task_free() accesses it. Access to storage backed by the pm8001 HBA is required; successful exploitation crashes the host or enables kernel-level data access and code execution.

The record

CVE
CVE-2022-48792
Published
Jul 16, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 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=4.15
  2. Affected versionversion=869ddbdcae3b4fb83b99889abae31544c149b210 <d9d93f32534a0a80a1c26bdb0746d90a7b19c2c2
  3. Affected versionversion=869ddbdcae3b4fb83b99889abae31544c149b210 <df7abcaa1246e2537ab4016077b5443bb3c09378
  4. Affected versionversion=869ddbdcae3b4fb83b99889abae31544c149b210 <f61f9fccb2cb4bb275674a79d638704db6bc2171
  5. Affected versionversion=869ddbdcae3b4fb83b99889abae31544c149b210 <fe9ac3eaa2e387a5742b380b73a5a6bc237bf184

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=869ddbdcae3b4fb83b99889abae31544c149b210 <d9d93f32534a0a80a1c26bdb0746d90a7b19c2c2; version=869ddbdcae3b4fb83b99889abae31544c149b210 <df7abcaa1246e2537ab4016077b5443bb3c09378; version=869ddbdcae3b4fb83b99889abae31544c149b210 <f61f9fccb2cb4bb275674a79d638704db6bc2171; version=869ddbdcae3b4fb83b99889abae31544c149b210 <fe9ac3eaa2e387a5742b380b73a5a6bc237bf184

Published CVSS scores

7.8NISTCVSS:3.1/AV:L/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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