CVE-2023-53255

Service interruption via unreleased firmware memory mapping

Published Sep 15, 2025 · Updated Sep 15, 2025

Resource leak in the Linux kernel Stratix10 service driver allows local users to consume memory during supported-device probing. svc_create_memory_pool() maps reserved shared memory with memremap() but has no matching memunmap(), leaving the mapping outside managed probe cleanup. Reachability requires the service driver and supported Stratix10 or Agilex SoC hardware; accumulated mappings can deplete memory and interrupt service.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the Linux kernel Stratix10 service driver allows local users to consume memory during supported-device probing. svc_create_memory_pool() maps reserved shared memory with memremap() but has no matching memunmap(), leaving the mapping outside managed probe cleanup. Reachability requires the service driver and supported Stratix10 or Agilex SoC hardware; accumulated mappings can deplete memory and interrupt service.

The record

CVE
CVE-2023-53255
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record 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=5.0
  2. Affected versionversion=7ca5ce896524f5292e610b27d168269e5ab74951 <1995f15590ca222f91193ed11461862b450abfd6
  3. Affected versionversion=7ca5ce896524f5292e610b27d168269e5ab74951 <7363de081c793e47866cb54ce7cb8a480cffc259
  4. Affected versionversion=7ca5ce896524f5292e610b27d168269e5ab74951 <974ac045a05ad12a0b4578fb303f00dcc22f3aba
  5. Affected versionversion=7ca5ce896524f5292e610b27d168269e5ab74951 <c04ed61ebf01968d7699b121663982493ed577fb
  6. Affected versionversion=7ca5ce896524f5292e610b27d168269e5ab74951 <cb8a31a56df8492fb0d900959238e1a3ff8b8981
  7. Affected versionversion=7ca5ce896524f5292e610b27d168269e5ab74951 <e3373e6b6c79aff698442b00d20c9f285d296e46

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.0; version=7ca5ce896524f5292e610b27d168269e5ab74951 <1995f15590ca222f91193ed11461862b450abfd6; version=7ca5ce896524f5292e610b27d168269e5ab74951 <7363de081c793e47866cb54ce7cb8a480cffc259; version=7ca5ce896524f5292e610b27d168269e5ab74951 <974ac045a05ad12a0b4578fb303f00dcc22f3aba; version=7ca5ce896524f5292e610b27d168269e5ab74951 <c04ed61ebf01968d7699b121663982493ed577fb; version=7ca5ce896524f5292e610b27d168269e5ab74951 <cb8a31a56df8492fb0d900959238e1a3ff8b8981; version=7ca5ce896524f5292e610b27d168269e5ab74951 <e3373e6b6c79aff698442b00d20c9f285d296e46

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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

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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