Vulnerability-Lookup

GHSA-25HR-298P-F2JG

Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-21 18:33

Details

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

net/mana: Null service_wq on setup error to prevent double destroy

In mana_gd_setup() error path, set gc->service_wq to NULL after destroy_workqueue() to match the cleanup in mana_gd_cleanup(). This prevents a use-after-free if the workqueue pointer is checked after a failed setup.

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-2026-43440"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T15:16:56Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mana: Null service_wq on setup error to prevent double destroy\n\nIn mana_gd_setup() error path, set gc-\u003eservice_wq to NULL after\ndestroy_workqueue() to match the cleanup in mana_gd_cleanup().\nThis prevents a use-after-free if the workqueue pointer is checked\nafter a failed setup.",
  "id": "GHSA-25hr-298p-f2jg",
  "modified": "2026-05-21T18:33:06Z",
  "published": "2026-05-08T15:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43440"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59489ce60d7412ed82fb1d8002faa3102dcd4916"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c92392602b451e3869f15ab685f8f650e942b13"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87c2302813abc55c46485711a678e3c312b00666"
    }
  ],
  "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-2026-43440 (GCVE-0-2026-43440)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:24

Title

net/mana: Null service_wq on setup error to prevent double destroy

Summary

In the Linux kernel, the following vulnerability has been resolved: net/mana: Null service_wq on setup error to prevent double destroy In mana_gd_setup() error path, set gc->service_wq to NULL after destroy_workqueue() to match the cleanup in mana_gd_cleanup(). This prevents a use-after-free if the workqueue pointer is checked after a failed setup.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/59489ce60d7412ed8…
https://git.kernel.org/stable/c/6c92392602b451e38…
https://git.kernel.org/stable/c/87c2302813abc55c4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: fa3c2f8d9152344a478abb847081c1b5f84a94f5 , < 59489ce60d7412ed82fb1d8002faa3102dcd4916 (git) Affected: a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e , < 6c92392602b451e3869f15ab685f8f650e942b13 (git) Affected: f975a0955276579e2176a134366ed586071c7c6a , < 87c2302813abc55c46485711a678e3c312b00666 (git)
Linux	Linux	Affected: 6.18.16 , < 6.18.19 (semver) Affected: 6.19.6 , < 6.19.9 (semver)

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JSON

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  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microsoft/mana/gdma_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "59489ce60d7412ed82fb1d8002faa3102dcd4916",
              "status": "affected",
              "version": "fa3c2f8d9152344a478abb847081c1b5f84a94f5",
              "versionType": "git"
            },
            {
              "lessThan": "6c92392602b451e3869f15ab685f8f650e942b13",
              "status": "affected",
              "version": "a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e",
              "versionType": "git"
            },
            {
              "lessThan": "87c2302813abc55c46485711a678e3c312b00666",
              "status": "affected",
              "version": "f975a0955276579e2176a134366ed586071c7c6a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
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          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThan": "6.19.9",
              "status": "affected",
              "version": "6.19.6",
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            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                },
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                }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mana: Null service_wq on setup error to prevent double destroy\n\nIn mana_gd_setup() error path, set gc-\u003eservice_wq to NULL after\ndestroy_workqueue() to match the cleanup in mana_gd_cleanup().\nThis prevents a use-after-free if the workqueue pointer is checked\nafter a failed setup."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:24:37.924Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/6c92392602b451e3869f15ab685f8f650e942b13"
        },
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          "url": "https://git.kernel.org/stable/c/87c2302813abc55c46485711a678e3c312b00666"
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43440",
    "datePublished": "2026-05-08T14:22:09.334Z",
    "dateReserved": "2026-05-01T14:12:56.009Z",
    "dateUpdated": "2026-05-11T22:24:37.924Z",
    "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.

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.
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GHSA-25HR-298P-F2JG

CVE-2026-43440 (GCVE-0-2026-43440)

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