CVE-2023-53367

Local service interruption via leaked user mappings

Published Sep 17, 2025 · Updated Sep 17, 2025

Memory leak in the Habanalabs accelerator driver in Linux 5.1 through 6.4.11 allows local users to exhaust kernel memory. The context-open path clears captured user_mappings bookkeeping after a hard reset without releasing the associated allocation. Triggering the sequence requires access to a Habana accelerator context, a captured user mapping, and a device hard reset; repetition can interrupt the host.

CVSS severity5.5
Medium
EPSS probability0.17%
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 Habanalabs accelerator driver in Linux 5.1 through 6.4.11 allows local users to exhaust kernel memory. The context-open path clears captured user_mappings bookkeeping after a hard reset without releasing the associated allocation. Triggering the sequence requires access to a Habana accelerator context, a captured user mapping, and a device hard reset; repetition can interrupt the host.

The record

CVE
CVE-2023-53367
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2025Record 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <314a7ffd7c196b27eedd50cb7553029e17789b55
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <973e0890e5264cb075ef668661cad06b67777121

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <314a7ffd7c196b27eedd50cb7553029e17789b55; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <973e0890e5264cb075ef668661cad06b67777121

Published CVSS scores

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

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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