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GHSA-7FW8-M89X-2XHM

Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2025-01-14 18:31

Details

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

nvme-tcp: fix the memleak while create new ctrl failed

Now while we create new ctrl failed, we have not free the tagset occupied by admin_q, here try to fix it.

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-2024-56632"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-27T15:15:22Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: fix the memleak while create new ctrl failed\n\nNow while we create new ctrl failed, we have not free the\ntagset occupied by admin_q, here try to fix it.",
  "id": "GHSA-7fw8-m89x-2xhm",
  "modified": "2025-01-14T18:31:55Z",
  "published": "2024-12-27T15:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56632"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ceff9ac13a2478afddce85414d404e6aff6425f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fec55c29e54d3ca6fe9d7d7d9266098b4514fd34"
    }
  ],
  "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-2024-56632 (GCVE-0-2024-56632)

Vulnerability from cvelistv5 – Published: 2024-12-27 15:02 – Updated: 2026-08-05 11:45

Title

nvme-tcp: fix the memleak while create new ctrl failed

Summary

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: fix the memleak while create new ctrl failed Now while we create new ctrl failed, we have not free the tagset occupied by admin_q, here try to fix it.

Severity

7.5 (High)


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

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 20:00 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/ceff9ac13a2478afd…
https://git.kernel.org/stable/c/fec55c29e54d3ca6f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: fd1418de10b9ca03d78404cf00a95138689ea369 , < ceff9ac13a2478afddce85414d404e6aff6425f6 (git) Affected: fd1418de10b9ca03d78404cf00a95138689ea369 , < fec55c29e54d3ca6fe9d7d7d9266098b4514fd34 (git)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 6.12.5 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56632",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:00:42.380071Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-401",
                "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:07:12.162Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "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": "ceff9ac13a2478afddce85414d404e6aff6425f6",
              "status": "affected",
              "version": "fd1418de10b9ca03d78404cf00a95138689ea369",
              "versionType": "git"
            },
            {
              "lessThan": "fec55c29e54d3ca6fe9d7d7d9266098b4514fd34",
              "status": "affected",
              "version": "fd1418de10b9ca03d78404cf00a95138689ea369",
              "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": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: fix the memleak while create new ctrl failed\n\nNow while we create new ctrl failed, we have not free the\ntagset occupied by admin_q, here try to fix it."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The leak path is selected entirely by data received from the remote NVMe-over-TCP target \u2014 `icdoff` and `sgls` are copied verbatim from the peer\u0027s Identify Controller response, and I/O-queue connect failures are equally peer-controlled. A rogue or MITM\u0027d target on the network triggers the bug in the host kernel\u0027s nvme-tcp initiator.\nAC:L - A malicious target simply returns a non-zero `icdoff` or clears the SGL support bits, hitting `goto destroy_admin` on every single connection attempt with 100% reliability. No race, no memory-layout dependency, no timing window.\nPR:N - NVMe/TCP is unauthenticated by default (no TLS or DH-HMAC-CHAP unless explicitly configured), so the attacking target holds no credentials on the victim host. The failure is forced during Identify processing, before any host-side trust decision about the target.\nUI:N - In standard NVMe-oF deployments the nvme-cli discovery-log-change udev rule / nvmf-autoconnect service re-runs `nvme connect-all` automatically, so a malicious discovery controller can drive an unbounded stream of controller creations by advertising many subsystems and re-issuing AENs, with no administrator action per attempt.\nS:U - The leaked tag set, request queues and the resulting exhaustion are all confined to the kernel of the affected host; no privilege or virtualization boundary is crossed.\nC:N - The failure path leaks allocations but does not copy any kernel data toward the attacker or expose freed contents to the peer; no attacker-readable information disclosure results.\nI:N - Nothing attacker-controlled is written into kernel structures by the defect itself \u2014 the missing `nvme_remove_admin_tag_set()` only omits frees, leaving no write primitive to the remote peer.\nA:H - The leak is unbounded and remotely repeatable, so a hostile target can drive the host into kernel memory exhaustion and OOM; additionally the leaked hctxs stay registered on the blk-mq CPU-hotplug lists while their `tag_set` lives in the freed `nvme_tcp_ctrl`, so `blk_mq_map_queue_type()` dereferences freed memory on the next CPU offline/online and oopses the machine."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:45:35.735Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ceff9ac13a2478afddce85414d404e6aff6425f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/fec55c29e54d3ca6fe9d7d7d9266098b4514fd34"
        }
      ],
      "title": "nvme-tcp: fix the memleak while create new ctrl failed",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56632",
    "datePublished": "2024-12-27T15:02:30.396Z",
    "dateReserved": "2024-12-27T15:00:39.838Z",
    "dateUpdated": "2026-08-05T11:45:35.735Z",
    "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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.