CVE-2023-54324

Local system crash via unlocked device-list traversal

Published Dec 30, 2025 · Updated Dec 30, 2025

Use-after-free in the Linux kernel multipath target allows local users to crash the system by racing dependency retrieval with device changes. The retrieve_deps path walks the open-device list without locking while multipath_message adds or removes entries through dm_get_device and dm_put_device. Reaching the flaw requires local low-privileged access and concurrent multipath operations; the resulting memory corruption or stale access interrupts the host.

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

Use-after-free in the Linux kernel multipath target allows local users to crash the system by racing dependency retrieval with device changes. The retrieve_deps path walks the open-device list without locking while multipath_message adds or removes entries through dm_get_device and dm_put_device. Reaching the flaw requires local low-privileged access and concurrent multipath operations; the resulting memory corruption or stale access interrupts the host.

The record

CVE
CVE-2023-54324
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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 <38f6e5ae5d9ff4a4050ea6f7b543d5d5a4e087cf
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dbf1a719850577bb51fc7512a3972994b797a17b
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f6007dce0cd35d634d9be91ef3515a6385dcee16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <38f6e5ae5d9ff4a4050ea6f7b543d5d5a4e087cf; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dbf1a719850577bb51fc7512a3972994b797a17b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f6007dce0cd35d634d9be91ef3515a6385dcee16

Published CVSS scores

5.5Amazon LinuxCVSS: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

No sourced classifications are available.

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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