CVE-2022-49839

Local system crash via unchecked device-add failure

Published May 1, 2025 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel SCSI SAS transport allows local users to crash the system during SAS host removal. sas_phy_add() fails to handle an error returned by transport_add_device(), so later host removal attempts to delete a device that was not added. Exploitation requires local low-privilege access and a transport-add failure during SAS PHY setup; the reported consequence is a kernel crash, not data access or code execution.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel SCSI SAS transport allows local users to crash the system during SAS host removal. sas_phy_add() fails to handle an error returned by transport_add_device(), so later host removal attempts to delete a device that was not added. Exploitation requires local low-privilege access and a transport-add failure during SAS PHY setup; the reported consequence is a kernel crash, not data access or code execution.

The record

CVE
CVE-2022-49839
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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=2.6.14
  2. Affected versionversion=c7ebbbce366c02e5657ac6b6059933fe0353b175 <03aabcb88aeeb7221ddb6196ae84ad5fb17b743f
  3. Affected versionversion=c7ebbbce366c02e5657ac6b6059933fe0353b175 <2f21d653c648735657e23948b1d7ac7273de0f87
  4. Affected versionversion=c7ebbbce366c02e5657ac6b6059933fe0353b175 <5d7bebf2dfb0dc97aac1fbace0910e557ecdb16f
  5. Affected versionversion=c7ebbbce366c02e5657ac6b6059933fe0353b175 <c736876ee294bb4f271d76a25cc7d70c8537bc5d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.14; version=c7ebbbce366c02e5657ac6b6059933fe0353b175 <03aabcb88aeeb7221ddb6196ae84ad5fb17b743f; version=c7ebbbce366c02e5657ac6b6059933fe0353b175 <2f21d653c648735657e23948b1d7ac7273de0f87; version=c7ebbbce366c02e5657ac6b6059933fe0353b175 <5d7bebf2dfb0dc97aac1fbace0910e557ecdb16f; version=c7ebbbce366c02e5657ac6b6059933fe0353b175 <c736876ee294bb4f271d76a25cc7d70c8537bc5d

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS: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 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-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application 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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