github - ghsa-q7g3-3qc3-3427

GHSA-Q7G3-3QC3-3427

Vulnerability from github – Published: 2025-11-12 12:30 – Updated: 2025-11-12 12:30

Details

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.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-40175"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-12T11:15:48Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-q7g3-3qc3-3427",
  "modified": "2025-11-12T12:30:28Z",
  "published": "2025-11-12T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40175"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3f8c0a273120fd2638f03403e786c3de2382e72"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-40175 (GCVE-0-2025-40175)

Vulnerability from cvelistv5 – Published: 2025-11-12 10:53 – Updated: 2025-12-01 06:19

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.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/2c84e91ef831d4fed…
	https://git.kernel.org/stable/c/a3f8c0a273120fd26…

Impacted products

Vendor

Product

Version

Linux

Affected: 4901e83a94ef0a8baf27916f31daf59b0a68547f , < 2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5 (git)
Affected: 4901e83a94ef0a8baf27916f31daf59b0a68547f , < a3f8c0a273120fd2638f03403e786c3de2382e72 (git)

Linux

Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.17.5 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": [
            {
              "lessThan": "2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5",
              "status": "affected",
              "version": "4901e83a94ef0a8baf27916f31daf59b0a68547f",
              "versionType": "git"
            },
            {
              "lessThan": "a3f8c0a273120fd2638f03403e786c3de2382e72",
              "status": "affected",
              "version": "4901e83a94ef0a8baf27916f31daf59b0a68547f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "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": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.5",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "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": "2025-12-01T06:19:30.807Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3f8c0a273120fd2638f03403e786c3de2382e72"
        }
      ],
      "title": "idpf: cleanup remaining SKBs in PTP flows",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "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": "2025-12-01T06:19:30.807Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-Q7G3-3QC3-3427

CVE-2025-40175 (GCVE-0-2025-40175)

Tags

Sightings

Nomenclature