CVE-2023-53115

Local service interruption via repeated IOC memory allocation

Published May 2, 2025 · Updated May 11, 2026

Memory leak in the Linux kernel allows local users to interrupt service during mpi3mr I/O controller reinitialization. In drivers/scsi/mpi3mr/mpi3mr_fw.c, mpi3mr_init_ioc() allocates memory again when an I/O controller is reinitialized instead of retaining the existing allocation. Low-privileged local access and a system using the mpi3mr SCSI driver are required; repeated reinitialization consumes kernel memory and can deny service.

CVSS severity5.5
Medium
EPSS probability0.19%
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 Linux kernel allows local users to interrupt service during mpi3mr I/O controller reinitialization. In drivers/scsi/mpi3mr/mpi3mr_fw.c, mpi3mr_init_ioc() allocates memory again when an I/O controller is reinitialized instead of retaining the existing allocation. Low-privileged local access and a system using the mpi3mr SCSI driver are required; repeated reinitialization consumes kernel memory and can deny service.

The record

CVE
CVE-2023-53115
Published
May 2, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.001
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

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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=5.17
  2. Affected versionversion=fe6db615156573d3f6a37564b8a590cb03bbaf25 <5aab9342f12f980b64617a034d121efbbf09100a
  3. Affected versionversion=fe6db615156573d3f6a37564b8a590cb03bbaf25 <7277b4eec2f25a0653646ba95b1f25fa16be1d6c
  4. Affected versionversion=fe6db615156573d3f6a37564b8a590cb03bbaf25 <c798304470cab88723d895726d17fcb96472e0e9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.17; version=fe6db615156573d3f6a37564b8a590cb03bbaf25 <5aab9342f12f980b64617a034d121efbbf09100a; version=fe6db615156573d3f6a37564b8a590cb03bbaf25 <7277b4eec2f25a0653646ba95b1f25fa16be1d6c; version=fe6db615156573d3f6a37564b8a590cb03bbaf25 <c798304470cab88723d895726d17fcb96472e0e9

Published CVSS scores

5.5NIST NVDCVSS: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
T1499.001OS Exhaustion Flood

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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