CVE-2023-54307

Service interruption via leaked QorIQ PTP mapping

Published Dec 30, 2025 · Updated Dec 30, 2025

Memory leak in the Linux kernel ptp_qoriq driver allows local users to exhaust memory when device initialization reaches an -ENODEV path. In ptp_qoriq_probe(), the first -ENODEV branch passes ptp_qoriq->base to ptp_qoriq_init() instead of the local ioremap() result, so the mapped base is not released. Reachability requires a kernel with the QorIQ PTP driver and compatible hardware to enter that initialization error path; the published impact is availability loss only.

CVSS severity5.7
Medium
EPSS probability0.20%
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 ptp_qoriq driver allows local users to exhaust memory when device initialization reaches an -ENODEV path. In ptp_qoriq_probe(), the first -ENODEV branch passes ptp_qoriq->base to ptp_qoriq_init() instead of the local ioremap() result, so the mapped base is not released. Reachability requires a kernel with the QorIQ PTP driver and compatible hardware to enter that initialization error path; the published impact is availability loss only.

The record

CVE
CVE-2023-54307
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
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=5.2
  2. Affected versionversion=7f4399ba405b6201fb318b43091703a34b1489ab <3907fcb5a439933cf8c10d6dc300bc11eba30de3
  3. Affected versionversion=7f4399ba405b6201fb318b43091703a34b1489ab <43b4331ce0cd88ccba425e0702ba35c1a52daccf
  4. Affected versionversion=7f4399ba405b6201fb318b43091703a34b1489ab <46c4993a1514eea3bbc7147d0c81c23cc06c6bed
  5. Affected versionversion=7f4399ba405b6201fb318b43091703a34b1489ab <c0de1a26e6595b0e7969c5b35990a77a2d93104f
  6. Affected versionversion=7f4399ba405b6201fb318b43091703a34b1489ab <c960785c8168d0e572101ed921b9be3934ed0bc9
  7. Affected versionversion=7f4399ba405b6201fb318b43091703a34b1489ab <f33642224e38d7e0d59336e10e7b4e370b1c4506

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=7f4399ba405b6201fb318b43091703a34b1489ab <3907fcb5a439933cf8c10d6dc300bc11eba30de3; version=7f4399ba405b6201fb318b43091703a34b1489ab <43b4331ce0cd88ccba425e0702ba35c1a52daccf; version=7f4399ba405b6201fb318b43091703a34b1489ab <46c4993a1514eea3bbc7147d0c81c23cc06c6bed; version=7f4399ba405b6201fb318b43091703a34b1489ab <c0de1a26e6595b0e7969c5b35990a77a2d93104f; version=7f4399ba405b6201fb318b43091703a34b1489ab <c960785c8168d0e572101ed921b9be3934ed0bc9; version=7f4399ba405b6201fb318b43091703a34b1489ab <f33642224e38d7e0d59336e10e7b4e370b1c4506

Published CVSS scores

4.7SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.7SUSECVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

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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