Vulnerability-Lookup

GHSA-RHG9-F586-Q28W

Vulnerability from github – Published: 2025-07-09 12:31 – Updated: 2026-10-21 15:40

Details

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

nvme-tcp: sanitize request list handling

Validate the request in nvme_tcp_handle_r2t() to ensure it's not part of any list, otherwise a malicious R2T PDU might inject a loop in request list processing.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38264"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-09T11:15:28Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: sanitize request list handling\n\nValidate the request in nvme_tcp_handle_r2t() to ensure it\u0027s not part of\nany list, otherwise a malicious R2T PDU might inject a loop in request\nlist processing.",
  "id": "GHSA-rhg9-f586-q28w",
  "modified": "2026-10-21T15:40:04Z",
  "published": "2025-07-09T12:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38264"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0bf04c874fcb1ae46a863034296e4b33d8fbd66c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/78a4adcd3fedb0728436e8094848ebf4c6bae006"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f27d152b2a59f443091cf9e3d815f06e32e9b96"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f054ea62598197714a6ca7b3b387a027308f8b13"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38264 (GCVE-0-2025-38264)

Vulnerability from cvelistv5 – Published: 2025-07-09 10:42 – Updated: 2026-10-21 12:36

Title

nvme-tcp: sanitize request list handling

Summary

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: sanitize request list handling Validate the request in nvme_tcp_handle_r2t() to ensure it's not part of any list, otherwise a malicious R2T PDU might inject a loop in request list processing.

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 CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/8f27d152b2a59f443…
https://git.kernel.org/stable/c/78a4adcd3fedb0728…
https://git.kernel.org/stable/c/f054ea62598197714…
https://git.kernel.org/stable/c/0bf04c874fcb1ae46…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 3f2304f8c6d6ed97849057bd16fee99e434ca796 , < 8f27d152b2a59f443091cf9e3d815f06e32e9b96 (git) Affected: 3f2304f8c6d6ed97849057bd16fee99e434ca796 , < 78a4adcd3fedb0728436e8094848ebf4c6bae006 (git) Affected: 3f2304f8c6d6ed97849057bd16fee99e434ca796 , < f054ea62598197714a6ca7b3b387a027308f8b13 (git) Affected: 3f2304f8c6d6ed97849057bd16fee99e434ca796 , < 0bf04c874fcb1ae46a863034296e4b33d8fbd66c (git)
Linux	Linux	Affected: 5.0 Unaffected: 0 , < 5.0 (semver) Unaffected: 6.6.160 , ≤ 6.6.* (semver) Unaffected: 6.12.36 , ≤ 6.12.* (semver) Unaffected: 6.15.5 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/tcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8f27d152b2a59f443091cf9e3d815f06e32e9b96",
              "status": "affected",
              "version": "3f2304f8c6d6ed97849057bd16fee99e434ca796",
              "versionType": "git"
            },
            {
              "lessThan": "78a4adcd3fedb0728436e8094848ebf4c6bae006",
              "status": "affected",
              "version": "3f2304f8c6d6ed97849057bd16fee99e434ca796",
              "versionType": "git"
            },
            {
              "lessThan": "f054ea62598197714a6ca7b3b387a027308f8b13",
              "status": "affected",
              "version": "3f2304f8c6d6ed97849057bd16fee99e434ca796",
              "versionType": "git"
            },
            {
              "lessThan": "0bf04c874fcb1ae46a863034296e4b33d8fbd66c",
              "status": "affected",
              "version": "3f2304f8c6d6ed97849057bd16fee99e434ca796",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/tcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.36",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.5",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: sanitize request list handling\n\nValidate the request in nvme_tcp_handle_r2t() to ensure it\u0027s not part of\nany list, otherwise a malicious R2T PDU might inject a loop in request\nlist processing."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The vulnerable code is the NVMe-over-TCP host driver\u0027s PDU receive path, parsing an R2T PDU sent by a remote NVMe-oF target over TCP (port 4420); the malicious input arrives purely over the network from a compromised/rogue target or an on-path attacker.\nAC:L - The target fully controls PDU content and timing \u2014 placing two R2T PDUs for the same command_id in a single TCP segment guarantees both are processed inside one nvme_tcp_recv_skb() pass with no send-path progress between them, creating the llist cycle deterministically with no race to win and no memory-layout dependency.\nPR:N - NVMe/TCP requires no authentication by default (TLS and DH-HMAC-CHAP are optional, off in stock configs), so the remote peer needs zero privileges or credentials on the victim host \u2014 it simply answers I/O it is already being sent.\nUI:N - No victim action is required; once the host is connected to the target, ordinary filesystem/block I/O generates the in-flight commands and the malicious target triggers the bug on its own by replying with duplicate R2T PDUs.\nS:U - The corruption and the resulting hang are confined to the host kernel\u0027s own memory and scheduling authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Beyond the list corruption, duplicate queueing lets the RX path reset req-\u003estate/offset/pdu_len while the TX path is consuming the request, desynchronizing req-\u003eiter so nvme_tcp_req_cur_page() reads past the bvec array and sock_sendmsg() splices unintended kernel pages directly to the attacker-controlled socket.\nI:H - Attacker-controlled input produces kernel linked-list pointer corruption (double llist_add plus repeated list_add of an already-linked entry into send_list) and lets an in-flight request\u0027s PDU header, ttag, and iterator state be rewritten mid-transfer, which is memory/state corruption leverageable for further control over kernel structures.\nA:H - The injected cycle makes nvme_tcp_process_req_list() spin forever in the nvme_tcp_wq kworker while holding queue-\u003esend_mutex with no cond_resched(), producing a CPU soft lockup, RCU stalls, and a permanently wedged storage queue \u2014 a deterministic, unauthenticated remote kernel hang."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:36:54.626Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/8f27d152b2a59f443091cf9e3d815f06e32e9b96"
        },
        {
          "url": "https://git.kernel.org/stable/c/78a4adcd3fedb0728436e8094848ebf4c6bae006"
        },
        {
          "url": "https://git.kernel.org/stable/c/f054ea62598197714a6ca7b3b387a027308f8b13"
        },
        {
          "url": "https://git.kernel.org/stable/c/0bf04c874fcb1ae46a863034296e4b33d8fbd66c"
        }
      ],
      "title": "nvme-tcp: sanitize request list handling",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38264",
    "datePublished": "2025-07-09T10:42:38.602Z",
    "dateReserved": "2025-04-16T04:51:23.997Z",
    "dateUpdated": "2026-10-21T12:36:54.626Z",
    "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.

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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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