Vulnerability-Lookup

GHSA-HW2X-MG9V-QW7C

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

In the Linux kernel, the following vulnerability has been resolved:

net/mlx5e: Fix use-after-free race in sample_restore_put()

Concurrent teardown of TC sample rules sharing the same restore context may re-read restore->count after dropping restore_lock. At that point another thread may already have completed cleanup and freed the restore object.

Use the result of the refcount decrement while holding restore_lock to determine whether cleanup is needed.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98016"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:30Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix use-after-free race in sample_restore_put()\n\nConcurrent teardown of TC sample rules sharing the same restore\ncontext may re-read restore-\u003ecount after dropping restore_lock.\nAt that point another thread may already have completed cleanup and\nfreed the restore object.\n\nUse the result of the refcount decrement while holding restore_lock to\ndetermine whether cleanup is needed.",
  "id": "GHSA-hw2x-mg9v-qw7c",
  "modified": "2026-09-25T12:31:33Z",
  "published": "2026-09-25T12:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98016"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1daecd76ab9e5f055fe3970462410ad1d40bd177"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72324da8eeca269db9196c2a555abf72eb0385c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af3aef0245abbab5e9f6302e7a7d6407187afb71"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98016 (GCVE-0-2026-98016)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:23 – Updated: 2026-09-25 10:23

Title

net/mlx5e: Fix use-after-free race in sample_restore_put()

Summary

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix use-after-free race in sample_restore_put() Concurrent teardown of TC sample rules sharing the same restore context may re-read restore->count after dropping restore_lock. At that point another thread may already have completed cleanup and freed the restore object. Use the result of the refcount decrement while holding restore_lock to determine whether cleanup is needed.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/3efd1a1938cbb33c5…
https://git.kernel.org/stable/c/72324da8eeca269db…
https://git.kernel.org/stable/c/1daecd76ab9e5f055…
https://git.kernel.org/stable/c/af3aef0245abbab5e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 36a3196256bf3310e5e7142b0e61787f7a201abd , < 3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a (git) Affected: 36a3196256bf3310e5e7142b0e61787f7a201abd , < 72324da8eeca269db9196c2a555abf72eb0385c5 (git) Affected: 36a3196256bf3310e5e7142b0e61787f7a201abd , < 1daecd76ab9e5f055fe3970462410ad1d40bd177 (git) Affected: 36a3196256bf3310e5e7142b0e61787f7a201abd , < af3aef0245abbab5e9f6302e7a7d6407187afb71 (git)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en/tc/sample.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a",
              "status": "affected",
              "version": "36a3196256bf3310e5e7142b0e61787f7a201abd",
              "versionType": "git"
            },
            {
              "lessThan": "72324da8eeca269db9196c2a555abf72eb0385c5",
              "status": "affected",
              "version": "36a3196256bf3310e5e7142b0e61787f7a201abd",
              "versionType": "git"
            },
            {
              "lessThan": "1daecd76ab9e5f055fe3970462410ad1d40bd177",
              "status": "affected",
              "version": "36a3196256bf3310e5e7142b0e61787f7a201abd",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "36a3196256bf3310e5e7142b0e61787f7a201abd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en/tc/sample.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc3",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix use-after-free race in sample_restore_put()\n\nConcurrent teardown of TC sample rules sharing the same restore\ncontext may re-read restore-\u003ecount after dropping restore_lock.\nAt that point another thread may already have completed cleanup and\nfreed the restore object.\n\nUse the result of the refcount decrement while holding restore_lock to\ndetermine whether cleanup is needed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:23:38.316Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a"
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          "url": "https://git.kernel.org/stable/c/72324da8eeca269db9196c2a555abf72eb0385c5"
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          "url": "https://git.kernel.org/stable/c/1daecd76ab9e5f055fe3970462410ad1d40bd177"
        },
        {
          "url": "https://git.kernel.org/stable/c/af3aef0245abbab5e9f6302e7a7d6407187afb71"
        }
      ],
      "title": "net/mlx5e: Fix use-after-free race in sample_restore_put()",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98016",
    "datePublished": "2026-09-25T10:23:38.316Z",
    "dateReserved": "2026-09-25T10:19:56.069Z",
    "dateUpdated": "2026-09-25T10:23:38.316Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-HW2X-MG9V-QW7C

CVE-2026-98016 (GCVE-0-2026-98016)

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