CVE-2023-52584Network attack vector

Invalid memory access via premature controller free

Published Mar 6, 2024 · Updated May 11, 2026

Use-after-free in the MediaTek PMIF driver in Linux 5.17 allows attackers to access freed driver memory during device removal. The removal path frees spmi_controller before managed clock cleanup, so releasing the clocks dereferences PMIF data already freed with the controller. The published reproducer requires DEBUG_TEST_DRIVER_REMOVE and KASAN; no consequence beyond the invalid kernel-memory access is documented.

CVSS severity3.8
Low
EPSS probability0.56%
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 MediaTek PMIF driver in Linux 5.17 allows attackers to access freed driver memory during device removal. The removal path frees spmi_controller before managed clock cleanup, so releasing the clocks dereferences PMIF data already freed with the controller. The published reproducer requires DEBUG_TEST_DRIVER_REMOVE and KASAN; no consequence beyond the invalid kernel-memory access is documented.

The record

CVE
CVE-2023-52584
Published
Mar 6, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 6, 2024CVE 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=5.17
  2. Affected versionversion=b45b3ccef8c063d21eb746d85337eaf71f6b5f07 <521f28eedd6b14228c46e3b81e3bf9b90c2818d8
  3. Affected versionversion=b45b3ccef8c063d21eb746d85337eaf71f6b5f07 <9a3881b1f07db1bb55cb0108e6f05cfd027eaf2e
  4. Affected versionversion=b45b3ccef8c063d21eb746d85337eaf71f6b5f07 <e821d50ab5b956ed0effa49faaf29912fd4106d9
  5. Affected versionversion=b45b3ccef8c063d21eb746d85337eaf71f6b5f07 <f8dcafcb54632536684336161da8bdd52120f95e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=5.17; version=b45b3ccef8c063d21eb746d85337eaf71f6b5f07 <521f28eedd6b14228c46e3b81e3bf9b90c2818d8; version=b45b3ccef8c063d21eb746d85337eaf71f6b5f07 <9a3881b1f07db1bb55cb0108e6f05cfd027eaf2e; version=b45b3ccef8c063d21eb746d85337eaf71f6b5f07 <e821d50ab5b956ed0effa49faaf29912fd4106d9; version=b45b3ccef8c063d21eb746d85337eaf71f6b5f07 <f8dcafcb54632536684336161da8bdd52120f95e
The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f4 <521f28eedd6b; version=1da177e4c3f4 <9a3881b1f07d; version=1da177e4c3f4 <e821d50ab5b9; version=1da177e4c3f4 <f8dcafcb5463

Published CVSS scores

3.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

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)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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