Vulnerability-Lookup

GHSA-7VH4-856X-687C

Vulnerability from github – Published: 2025-02-27 21:32 – Updated: 2025-02-27 21:32

Details

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

ref_tracker: implement use-after-free detection

Whenever ref_tracker_dir_init() is called, mark the struct ref_tracker_dir as dead.

Test the dead status from ref_tracker_alloc() and ref_tracker_free()

This should detect buggy dev_put()/dev_hold() happening too late in netdevice dismantle process.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49127"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:50Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nref_tracker: implement use-after-free detection\n\nWhenever ref_tracker_dir_init() is called, mark the struct ref_tracker_dir\nas dead.\n\nTest the dead status from ref_tracker_alloc() and ref_tracker_free()\n\nThis should detect buggy dev_put()/dev_hold() happening too late\nin netdevice dismantle process.",
  "id": "GHSA-7vh4-856x-687c",
  "modified": "2025-02-27T21:32:12Z",
  "published": "2025-02-27T21:32:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49127"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3743c9de303fa36c2e2ca2522ab280c52bcafbd2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3ececfe668facd87d920b608349a32607060e66"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49127 (GCVE-0-2022-49127)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-08-05 08:53

Title

ref_tracker: implement use-after-free detection

Summary

In the Linux kernel, the following vulnerability has been resolved: ref_tracker: implement use-after-free detection Whenever ref_tracker_dir_init() is called, mark the struct ref_tracker_dir as dead. Test the dead status from ref_tracker_alloc() and ref_tracker_free() This should detect buggy dev_put()/dev_hold() happening too late in netdevice dismantle process.

Severity

7 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-27 18:17 UTC

CWE

CWE-416 - Use After Free

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/3743c9de303fa36c2…
https://git.kernel.org/stable/c/e3ececfe668facd87…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4e66934eaadc83b27ada8d42b60894018f3bfabf , < 3743c9de303fa36c2e2ca2522ab280c52bcafbd2 (git) Affected: 4e66934eaadc83b27ada8d42b60894018f3bfabf , < e3ececfe668facd87d920b608349a32607060e66 (git)
Linux	Linux	Affected: 5.17 Unaffected: 0 , < 5.17 (semver) Unaffected: 5.17.3 , ≤ 5.17.* (semver) Unaffected: 5.18 , ≤ * (original_commit_for_fix)

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  "containers": {
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        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
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              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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                "timestamp": "2025-02-27T18:17:18.309932Z",
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        "providerMetadata": {
          "dateUpdated": "2025-02-27T18:22:34.926Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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          "programFiles": [
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            "lib/ref_tracker.c"
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              "status": "affected",
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              "versionType": "git"
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              "lessThan": "e3ececfe668facd87d920b608349a32607060e66",
              "status": "affected",
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
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              "cpeMatch": [
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        "dateUpdated": "2026-08-05T08:53:59.429Z",
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          "url": "https://git.kernel.org/stable/c/e3ececfe668facd87d920b608349a32607060e66"
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    "datePublished": "2025-02-26T01:55:04.643Z",
    "dateReserved": "2025-02-26T01:49:39.266Z",
    "dateUpdated": "2026-08-05T08:53:59.429Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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