Vulnerability-Lookup

GHSA-597P-QXFW-C3VG

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33

Details

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

nvme: fix FDP fdpcidx bounds check

The fdpcidx bounds check sets n = NUMFDPC + 1 but used > instead of >=, incorrectly accepting fdp_idx when it equals n (i.e. NUMFDPC + 1).

Severity

9.8 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74361"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:37Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: fix FDP fdpcidx bounds check\n\nThe fdpcidx bounds check sets n = NUMFDPC + 1 but used \u003e instead of \u003e=,\nincorrectly accepting fdp_idx when it equals n (i.e. NUMFDPC + 1).",
  "id": "GHSA-597p-qxfw-c3vg",
  "modified": "2026-08-17T06:33:40Z",
  "published": "2026-08-15T06:32:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74361"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0967074f6830718fd2597404ef119bddd0dbfd00"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d0e7d2af884b91329235abb16652ae4eead8079"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5e406928404d67a8da8aa3ae21732e1ea1a04118"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-74361 (GCVE-0-2026-74361)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:46

Title

nvme: fix FDP fdpcidx bounds check

Summary

In the Linux kernel, the following vulnerability has been resolved: nvme: fix FDP fdpcidx bounds check The fdpcidx bounds check sets n = NUMFDPC + 1 but used > instead of >=, incorrectly accepting fdp_idx when it equals n (i.e. NUMFDPC + 1).

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

3 references

URL	Tags
https://git.kernel.org/stable/c/5e406928404d67a8d…
https://git.kernel.org/stable/c/5d0e7d2af884b9132…
https://git.kernel.org/stable/c/0967074f6830718fd…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 30b5f20bb2ddab013035399e5c7e6577da49320a , < 5e406928404d67a8da8aa3ae21732e1ea1a04118 (git) Affected: 30b5f20bb2ddab013035399e5c7e6577da49320a , < 5d0e7d2af884b91329235abb16652ae4eead8079 (git) Affected: 30b5f20bb2ddab013035399e5c7e6577da49320a , < 0967074f6830718fd2597404ef119bddd0dbfd00 (git)
Linux	Linux	Affected: 6.16 Unaffected: 0 , < 6.16 (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5e406928404d67a8da8aa3ae21732e1ea1a04118",
              "status": "affected",
              "version": "30b5f20bb2ddab013035399e5c7e6577da49320a",
              "versionType": "git"
            },
            {
              "lessThan": "5d0e7d2af884b91329235abb16652ae4eead8079",
              "status": "affected",
              "version": "30b5f20bb2ddab013035399e5c7e6577da49320a",
              "versionType": "git"
            },
            {
              "lessThan": "0967074f6830718fd2597404ef119bddd0dbfd00",
              "status": "affected",
              "version": "30b5f20bb2ddab013035399e5c7e6577da49320a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: fix FDP fdpcidx bounds check\n\nThe fdpcidx bounds check sets n = NUMFDPC + 1 but used \u003e instead of \u003e=,\nincorrectly accepting fdp_idx when it equals n (i.e. NUMFDPC + 1)."
        }
      ],
      "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 bug is in the NVMe host driver while parsing Get Features/Get Log responses during namespace scan; a malicious NVMe-oF target can deliver crafted FDP data over TCP/RDMA to any host already using remote NVMe storage, which is the highest-impact reachable deployment.\nAC:L - An attacker controlling the NVMe endpoint fully sets fdpcidx and numfdpc in protocol responses and can reliably make fdpcidx equal numfdpc+1, walk one descriptor past the valid list, and hit the out-of-bounds read without races or victim-specific heap layout.\nPR:N - Exploitation needs no local account or capabilities on the victim; a remote malicious/compromised NVMe-oF target (or physical device inserted by an attacker) triggers parsing during connect/rescan/AEN-driven namespace scans without further local authorization.\nUI:N - No victim user action is required at exploit time because namespace scanning and AEN-triggered rescans run automatically in kernel workqueues once a controller is present, and a remote target can force rescans with Notice Namespace Changed events.\nS:U - Impact is confined to kernel memory and block-layer metadata on the host parsing the malicious device responses; it does not cross a VM, container, or IOMMU security boundary into a separate authority.\nC:H - Accepting fdpcidx=numfdpc+1 lets the descriptor walk advance past the last valid FDP configuration and then reads desc-\u003enrg and desc-\u003eruns out of bounds, leaking adjacent kvmalloc/heap contents or attacker-crafted bytes from beyond the valid descriptor array.\nI:H - The out-of-bounds descriptor fields are copied into info-\u003eruns and influence queue write_stream_granularity limits, giving attacker-controlled modification of kernel block-layer state from memory corruption primitives that can be chained beyond a simple crash.\nA:H - If the out-of-bounds descriptor pointer lies past the allocated FDP log buffer, accessing desc-\u003enrg/desc-\u003eruns can fault the kernel (oops/panic); even successful parsing still represents unsafe memory access with high availability risk under attacker control."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:46:20.518Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5e406928404d67a8da8aa3ae21732e1ea1a04118"
        },
        {
          "url": "https://git.kernel.org/stable/c/5d0e7d2af884b91329235abb16652ae4eead8079"
        },
        {
          "url": "https://git.kernel.org/stable/c/0967074f6830718fd2597404ef119bddd0dbfd00"
        }
      ],
      "title": "nvme: fix FDP fdpcidx bounds check",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74361",
    "datePublished": "2026-08-15T05:58:44.857Z",
    "dateReserved": "2026-08-15T05:44:03.887Z",
    "dateUpdated": "2026-08-17T05:46:20.518Z",
    "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-597P-QXFW-C3VG

CVE-2026-74361 (GCVE-0-2026-74361)

Tags

Sightings

Nomenclature