CVE-2022-49082

Kernel instability via freed SAS port dereference

Published Feb 26, 2025 · Updated May 11, 2026

Use-after-free in Linux kernel 5.11 through 5.18-rc1 lets local users trigger a kernel memory error during mpt3sas driver removal. _scsih_expander_node_remove() calls mpt3sas_transport_port_remove(), which frees the SAS expander's port before ioc_info() dereferences its port ID. The demonstrated path requires privileged module unloading and an attached mpt3sas SAS expander; the record shows a KASAN fault but does not establish code execution.

CVSS severity7.8
High
EPSS probability0.25%
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 Linux kernel 5.11 through 5.18-rc1 lets local users trigger a kernel memory error during mpt3sas driver removal. _scsih_expander_node_remove() calls mpt3sas_transport_port_remove(), which frees the SAS expander's port before ioc_info() dereferences its port ID. The demonstrated path requires privileged module unloading and an attached mpt3sas SAS expander; the record shows a KASAN fault but does not establish code execution.

The record

CVE
CVE-2022-49082
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 26, 2025CVE 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=5.11
  2. Affected versionversion=7d310f241001e090cf1ec0f3ae836b38d8c6ebec <17d66b1c92bcb41e72271ec60069d3684aaa1c9c
  3. Affected versionversion=7d310f241001e090cf1ec0f3ae836b38d8c6ebec <1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c
  4. Affected versionversion=7d310f241001e090cf1ec0f3ae836b38d8c6ebec <25c1353dca74ad7cf3fd7ce258fe7c957a147d5e
  5. Affected versionversion=7d310f241001e090cf1ec0f3ae836b38d8c6ebec <87d663d40801dffc99a5ad3b0188ad3e2b4d1557

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=5.11; version=7d310f241001e090cf1ec0f3ae836b38d8c6ebec <17d66b1c92bcb41e72271ec60069d3684aaa1c9c; version=7d310f241001e090cf1ec0f3ae836b38d8c6ebec <1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c; version=7d310f241001e090cf1ec0f3ae836b38d8c6ebec <25c1353dca74ad7cf3fd7ce258fe7c957a147d5e; version=7d310f241001e090cf1ec0f3ae836b38d8c6ebec <87d663d40801dffc99a5ad3b0188ad3e2b4d1557

Published CVSS scores

6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.8Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8CISA-ADPCVSS: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

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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