Vulnerability-Lookup

GHSA-5J92-W6XV-QP2M

Vulnerability from github – Published: 2025-05-02 18:31 – Updated: 2025-11-10 18:30

Details

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

nvmet: avoid potential UAF in nvmet_req_complete()

An nvme target ->queue_response() operation implementation may free the request passed as argument. Such implementation potentially could result in a use after free of the request pointer when percpu_ref_put() is called in nvmet_req_complete().

Avoid such problem by using a local variable to save the sq pointer before calling __nvmet_req_complete(), thus avoiding dereferencing the req pointer after that function call.

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-2023-53116"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-02T16:15:30Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: avoid potential UAF in nvmet_req_complete()\n\nAn nvme target -\u003equeue_response() operation implementation may free the\nrequest passed as argument. Such implementation potentially could result\nin a use after free of the request pointer when percpu_ref_put() is\ncalled in nvmet_req_complete().\n\nAvoid such problem by using a local variable to save the sq pointer\nbefore calling __nvmet_req_complete(), thus avoiding dereferencing the\nreq pointer after that function call.",
  "id": "GHSA-5j92-w6xv-qp2m",
  "modified": "2025-11-10T18:30:29Z",
  "published": "2025-05-02T18:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53116"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04c394208831d5e0d5cfee46722eb0f033cd4083"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6173a77b7e9d3e202bdb9897b23f2a8afe7bf286"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ed9813871038b25a934b21ab76b5b7dbf44fc3a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6317235da8aa7cb97529ebc8121cc2a4c4c437a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bcd535f07c58342302a2cd2bdd8894fe0872c8a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5d99b29012bbf0e86929403209723b2806500c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1d5888a5efe345b63c430b256e95acb0a475642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fafcb4b26393870c45462f9af6a48e581dbbcf7e"
    }
  ],
  "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-2023-53116 (GCVE-0-2023-53116)

Vulnerability from cvelistv5 – Published: 2025-05-02 15:55 – Updated: 2026-08-05 09:12

Title

nvmet: avoid potential UAF in nvmet_req_complete()

Summary

In the Linux kernel, the following vulnerability has been resolved: nvmet: avoid potential UAF in nvmet_req_complete() An nvme target ->queue_response() operation implementation may free the request passed as argument. Such implementation potentially could result in a use after free of the request pointer when percpu_ref_put() is called in nvmet_req_complete(). Avoid such problem by using a local variable to save the sq pointer before calling __nvmet_req_complete(), thus avoiding dereferencing the req pointer after that function call.

Severity

9.8 (Critical)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/e5d99b29012bbf0e8…
https://git.kernel.org/stable/c/fafcb4b26393870c4…
https://git.kernel.org/stable/c/04c394208831d5e0d…
https://git.kernel.org/stable/c/a6317235da8aa7cb9…
https://git.kernel.org/stable/c/f1d5888a5efe345b6…
https://git.kernel.org/stable/c/bcd535f07c5834230…
https://git.kernel.org/stable/c/8ed9813871038b25a…
https://git.kernel.org/stable/c/6173a77b7e9d3e202…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a07b4970f464f13640e28e16dad6cfa33647cc99 , < e5d99b29012bbf0e86929403209723b2806500c1 (git) Affected: a07b4970f464f13640e28e16dad6cfa33647cc99 , < fafcb4b26393870c45462f9af6a48e581dbbcf7e (git) Affected: a07b4970f464f13640e28e16dad6cfa33647cc99 , < 04c394208831d5e0d5cfee46722eb0f033cd4083 (git) Affected: a07b4970f464f13640e28e16dad6cfa33647cc99 , < a6317235da8aa7cb97529ebc8121cc2a4c4c437a (git) Affected: a07b4970f464f13640e28e16dad6cfa33647cc99 , < f1d5888a5efe345b63c430b256e95acb0a475642 (git) Affected: a07b4970f464f13640e28e16dad6cfa33647cc99 , < bcd535f07c58342302a2cd2bdd8894fe0872c8a9 (git) Affected: a07b4970f464f13640e28e16dad6cfa33647cc99 , < 8ed9813871038b25a934b21ab76b5b7dbf44fc3a (git) Affected: a07b4970f464f13640e28e16dad6cfa33647cc99 , < 6173a77b7e9d3e202bdb9897b23f2a8afe7bf286 (git)
Linux	Linux	Affected: 4.8 Unaffected: 0 , < 4.8 (semver) Unaffected: 4.14.311 , ≤ 4.14.* (semver) Unaffected: 4.19.279 , ≤ 4.19.* (semver) Unaffected: 5.4.238 , ≤ 5.4.* (semver) Unaffected: 5.10.176 , ≤ 5.10.* (semver) Unaffected: 5.15.104 , ≤ 5.15.* (semver) Unaffected: 6.1.21 , ≤ 6.1.* (semver) Unaffected: 6.2.8 , ≤ 6.2.* (semver) Unaffected: 6.3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/target/core.c"
          ],
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              "status": "affected",
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              "versionType": "git"
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            {
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              "status": "affected",
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "4.8"
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            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "4.14.311",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.279",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.238",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.104",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
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                {
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                {
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                {
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                  "versionStartIncluding": "4.8",
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: avoid potential UAF in nvmet_req_complete()\n\nAn nvme target -\u003equeue_response() operation implementation may free the\nrequest passed as argument. Such implementation potentially could result\nin a use after free of the request pointer when percpu_ref_put() is\ncalled in nvmet_req_complete().\n\nAvoid such problem by using a local variable to save the sq pointer\nbefore calling __nvmet_req_complete(), thus avoiding dereferencing the\nreq pointer after that function call."
        }
      ],
      "metrics": [
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            "baseSeverity": "CRITICAL",
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              "value": "AV:N - The vulnerable code is in the shared NVMe target core and is reachable via network-facing transports such as nvmet-tcp and nvmet-rdma, which accept remote NVMe-oF connections and complete requests through nvmet_req_complete().\nAC:L - An attacker who can send NVMe commands reliably drives request completion; on FC the abort path frees the request synchronously inside queue_response, and on TCP/RDMA concurrent requests create a reuse race the attacker controls.\nPR:N - The discovery subsystem allows any host without credentials, DH-CHAP auth is optional, and allow_any_host deployments accept unauthenticated connects, so a remote peer can reach nvmet_req_complete with no privileges.\nUI:N - Exploitation requires only attacker-sent NVMe-oF traffic to a configured target; no victim user action is needed.\nS:U - This is memory corruption within the host kernel\u0027s NVMe target authority and does not cross a VM, IOMMU, or other security boundary.\nC:H - Use-after-free of the request object allows reuse/spray of the freed structure, which can be leveraged for arbitrary kernel memory disclosure.\nI:H - The same UAF/reuse of the nvmet request enables attacker-controlled heap contents and corruption suitable for arbitrary write or control-flow hijacking.\nA:H - Dereferencing the freed request (e.g., req-\u003esq for percpu_ref_put) can crash the kernel via oops/panic even when not fully exploited for code execution."
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/8ed9813871038b25a934b21ab76b5b7dbf44fc3a"
        },
        {
          "url": "https://git.kernel.org/stable/c/6173a77b7e9d3e202bdb9897b23f2a8afe7bf286"
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      "title": "nvmet: avoid potential UAF in nvmet_req_complete()",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53116",
    "datePublished": "2025-05-02T15:55:54.858Z",
    "dateReserved": "2025-05-02T15:51:43.554Z",
    "dateUpdated": "2026-08-05T09:12:52.059Z",
    "state": "PUBLISHED"
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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.

Related by attack behaviour

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