CVE-2025-38054 (GCVE-0-2025-38054)

Vulnerability from cvelistv5 – Published: 2025-06-18 09:33 – Updated: 2025-06-18 09:33
VLAI?
Title
ptp: ocp: Limit signal/freq counts in summary output functions
Summary
In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: Limit signal/freq counts in summary output functions The debugfs summary output could access uninitialized elements in the freq_in[] and signal_out[] arrays, causing NULL pointer dereferences and triggering a kernel Oops (page_fault_oops). This patch adds u8 fields (nr_freq_in, nr_signal_out) to track the number of initialized elements, with a maximum of 4 per array. The summary output functions are updated to respect these limits, preventing out-of-bounds access and ensuring safe array handling. Widen the label variables because the change confuses GCC about max length of the strings.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9 , < 0b7d3e782027ac3b6fec56159e8e348042000aef (git)
Affected: ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9 , < fcad74f894ac89790084cc2e1ec61b08220941d1 (git)
Affected: ef61f5528fca6c3bbb2f8bc002fd1949c9d1f9b9 , < c9e455581e2ba87ee38c126e8dc49a424b9df0cf (git)
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    Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.12.31 , ≤ 6.12.* (semver)
Unaffected: 6.14.9 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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          "programFiles": [
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nptp: ocp: Limit signal/freq counts in summary output functions\n\nThe debugfs summary output could access uninitialized elements in\nthe freq_in[] and signal_out[] arrays, causing NULL pointer\ndereferences and triggering a kernel Oops (page_fault_oops).\nThis patch adds u8 fields (nr_freq_in, nr_signal_out) to track the\nnumber of initialized elements, with a maximum of 4 per array.\nThe summary output functions are updated to respect these limits,\npreventing out-of-bounds access and ensuring safe array handling.\n\nWiden the label variables because the change confuses GCC about\nmax length of the strings."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-06-18T09:33:34.686Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "ptp: ocp: Limit signal/freq counts in summary output functions",
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    "datePublished": "2025-06-18T09:33:34.686Z",
    "dateReserved": "2025-04-16T04:51:23.979Z",
    "dateUpdated": "2025-06-18T09:33:34.686Z",
    "state": "PUBLISHED"
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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