CVE-2023-53128

Service interrupt via leaked throttle-group memory

Published May 2, 2025 · Updated May 11, 2026

Memory leak in the mpi3mr SCSI driver in Linux kernels introduced in 6.0 allows local users to interrupt service through memory exhaustion. The mpi3mr_free_mem cleanup path fails to release the mrioc->throttle_groups allocation created for I/O throttle-group metadata. Reachability requires the mpi3mr driver and a compatible MPI3 storage controller, and the public record identifies no reliable unprivileged trigger.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the mpi3mr SCSI driver in Linux kernels introduced in 6.0 allows local users to interrupt service through memory exhaustion. The mpi3mr_free_mem cleanup path fails to release the mrioc->throttle_groups allocation created for I/O throttle-group metadata. Reachability requires the mpi3mr driver and a compatible MPI3 storage controller, and the public record identifies no reliable unprivileged trigger.

The record

CVE
CVE-2023-53128
Published
May 2, 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. May 2, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.0
  2. Affected versionversion=f10af057325c251c0dfcba7f3e3b607634d0bb25 <574cc10edaa7dba833764efed8c57ee0e6bf7574
  3. Affected versionversion=f10af057325c251c0dfcba7f3e3b607634d0bb25 <85349a227eb4a56520adc190c666075f80d4ae70
  4. Affected versionversion=f10af057325c251c0dfcba7f3e3b607634d0bb25 <f305a7b6ca21a665e8d0cf70b5936991a298c93c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=f10af057325c251c0dfcba7f3e3b607634d0bb25 <574cc10edaa7dba833764efed8c57ee0e6bf7574; version=f10af057325c251c0dfcba7f3e3b607634d0bb25 <85349a227eb4a56520adc190c666075f80d4ae70; version=f10af057325c251c0dfcba7f3e3b607634d0bb25 <f305a7b6ca21a665e8d0cf70b5936991a298c93c

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS: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 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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