CVE-2022-49121

Storage interruption via leaked pm8001 request tags

Published Feb 26, 2025 · Updated May 11, 2026

Resource exhaustion in the Linux kernel pm8001 SCSI driver allows local users to interrupt storage through failed driver operations. Five request-building and abort paths allocate tags but omit pm8001_tag_free when command construction or task abortion fails, allowing repeated errors to deplete the finite tag pool. Reachability requires a pm8001-managed SAS controller and low-privileged local access; the published record establishes availability loss but no data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in the Linux kernel pm8001 SCSI driver allows local users to interrupt storage through failed driver operations. Five request-building and abort paths allocate tags but omit pm8001_tag_free when command construction or task abortion fails, allowing repeated errors to deplete the finite tag pool. Reachability requires a pm8001-managed SAS controller and low-privileged local access; the published record establishes availability loss but no data disclosure or modification.

The record

CVE
CVE-2022-49121
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

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=2.6.33
  2. Affected versionversion=dbf9bfe615717d1145f263c0049fe2328e6ed395 <43c617eefab7077d69f5989ad3e2a273da1d728b
  3. Affected versionversion=dbf9bfe615717d1145f263c0049fe2328e6ed395 <4c8f04b1905cd4b776d0b720463c091545478ef7
  4. Affected versionversion=dbf9bfe615717d1145f263c0049fe2328e6ed395 <9cc72bcc1c096ed42c91646f130d4b4191580a4c
  5. Affected versionversion=dbf9bfe615717d1145f263c0049fe2328e6ed395 <a0bb65eadbf942024226241d9d99fed17168940b
  6. Affected versionversion=dbf9bfe615717d1145f263c0049fe2328e6ed395 <bdc74815f1c39905054b7d47399e0260b201b14d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.33; version=dbf9bfe615717d1145f263c0049fe2328e6ed395 <43c617eefab7077d69f5989ad3e2a273da1d728b; version=dbf9bfe615717d1145f263c0049fe2328e6ed395 <4c8f04b1905cd4b776d0b720463c091545478ef7; version=dbf9bfe615717d1145f263c0049fe2328e6ed395 <9cc72bcc1c096ed42c91646f130d4b4191580a4c; version=dbf9bfe615717d1145f263c0049fe2328e6ed395 <a0bb65eadbf942024226241d9d99fed17168940b; version=dbf9bfe615717d1145f263c0049fe2328e6ed395 <bdc74815f1c39905054b7d47399e0260b201b14d

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

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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