CVE-2025-40175 (GCVE-0-2025-40175)
Vulnerability from cvelistv5
Published
2025-11-12 10:53
Modified
2025-11-12 10:53
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: idpf: cleanup remaining SKBs in PTP flows When the driver requests Tx timestamp value, one of the first steps is to clone SKB using skb_get. It increases the reference counter for that SKB to prevent unexpected freeing by another component. However, there may be a case where the index is requested, SKB is assigned and never consumed by PTP flows - for example due to reset during running PTP apps. Add a check in release timestamping function to verify if the SKB assigned to Tx timestamp latch was freed, and release remaining SKBs.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4901e83a94ef0a8baf27916f31daf59b0a68547f
Version: 4901e83a94ef0a8baf27916f31daf59b0a68547f
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/idpf/idpf_ptp.c",
            "drivers/net/ethernet/intel/idpf/idpf_virtchnl_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: cleanup remaining SKBs in PTP flows\n\nWhen the driver requests Tx timestamp value, one of the first steps is\nto clone SKB using skb_get. It increases the reference counter for that\nSKB to prevent unexpected freeing by another component.\nHowever, there may be a case where the index is requested, SKB is\nassigned and never consumed by PTP flows - for example due to reset during\nrunning PTP apps.\n\nAdd a check in release timestamping function to verify if the SKB\nassigned to Tx timestamp latch was freed, and release remaining SKBs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-12T10:53:50.166Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5"
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        {
          "url": "https://git.kernel.org/stable/c/a3f8c0a273120fd2638f03403e786c3de2382e72"
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      ],
      "title": "idpf: cleanup remaining SKBs in PTP flows",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40175",
    "datePublished": "2025-11-12T10:53:50.166Z",
    "dateReserved": "2025-04-16T07:20:57.177Z",
    "dateUpdated": "2025-11-12T10:53:50.166Z",
    "state": "PUBLISHED"
  },
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  }
}


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