Vulnerability-Lookup

FKIE_CVE-2026-46105

Vulnerability from fkie_nvd - Published: 2026-05-28 10:16 - Updated: 2026-06-25 21:18

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: mpt3sas: Limit NVMe request size to 2 MiB The HBA firmware reports NVMe MDTS values based on the underlying drive capability. However, because the driver allocates a fixed 4K buffer for the PRP list, accommodating at most 512 entries, the driver supports a maximum I/O transfer size of 2 MiB. Limit max_hw_sectors to the smaller of the reported MDTS and the 2 MiB driver limit to prevent issuing oversized I/O that may lead to a kernel oops.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/04631f55afc543d5431a2bdee7f6cc0f2c0debe7	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/45dcc815fc5539e88154315f36cbcb11d3a52fc2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e5f9824817c6358b9f9738bdb92dec9e4e794d3c	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.1
linux	linux_kernel	7.1

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/mpt3sas/mpt3sas_scsih.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "45dcc815fc5539e88154315f36cbcb11d3a52fc2",
              "status": "affected",
              "version": "9b8b84879d4adc506b0d3944e20b28d9f3f6994b",
              "versionType": "git"
            },
            {
              "lessThan": "e5f9824817c6358b9f9738bdb92dec9e4e794d3c",
              "status": "affected",
              "version": "9b8b84879d4adc506b0d3944e20b28d9f3f6994b",
              "versionType": "git"
            },
            {
              "lessThan": "04631f55afc543d5431a2bdee7f6cc0f2c0debe7",
              "status": "affected",
              "version": "9b8b84879d4adc506b0d3944e20b28d9f3f6994b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/mpt3sas/mpt3sas_scsih.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
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          "cpeMatch": [
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              "matchCriteriaId": "0382719F-0247-436A-881F-C7382FD213E6",
              "versionEndExcluding": "6.18.30",
              "versionStartIncluding": "6.17",
              "vulnerable": true
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: mpt3sas: Limit NVMe request size to 2 MiB\n\nThe HBA firmware reports NVMe MDTS values based on the underlying drive\ncapability. However, because the driver allocates a fixed 4K buffer for\nthe PRP list, accommodating at most 512 entries, the driver supports a\nmaximum I/O transfer size of 2 MiB.\n\nLimit max_hw_sectors to the smaller of the reported MDTS and the 2 MiB\ndriver limit to prevent issuing oversized I/O that may lead to a kernel\noops."
    }
  ],
  "id": "CVE-2026-46105",
  "lastModified": "2026-06-25T21:18:44.367",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-05-28T10:16:25.850",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/04631f55afc543d5431a2bdee7f6cc0f2c0debe7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/45dcc815fc5539e88154315f36cbcb11d3a52fc2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e5f9824817c6358b9f9738bdb92dec9e4e794d3c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-46105 (GCVE-0-2026-46105)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:35 – Updated: 2026-08-05 12:29

Title

scsi: mpt3sas: Limit NVMe request size to 2 MiB

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/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/45dcc815fc5539e88…
https://git.kernel.org/stable/c/e5f9824817c6358b9…
https://git.kernel.org/stable/c/04631f55afc543d54…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 9b8b84879d4adc506b0d3944e20b28d9f3f6994b , < 45dcc815fc5539e88154315f36cbcb11d3a52fc2 (git) Affected: 9b8b84879d4adc506b0d3944e20b28d9f3f6994b , < e5f9824817c6358b9f9738bdb92dec9e4e794d3c (git) Affected: 9b8b84879d4adc506b0d3944e20b28d9f3f6994b , < 04631f55afc543d5431a2bdee7f6cc0f2c0debe7 (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/mpt3sas/mpt3sas_scsih.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "45dcc815fc5539e88154315f36cbcb11d3a52fc2",
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              "version": "9b8b84879d4adc506b0d3944e20b28d9f3f6994b",
              "versionType": "git"
            },
            {
              "lessThan": "e5f9824817c6358b9f9738bdb92dec9e4e794d3c",
              "status": "affected",
              "version": "9b8b84879d4adc506b0d3944e20b28d9f3f6994b",
              "versionType": "git"
            },
            {
              "lessThan": "04631f55afc543d5431a2bdee7f6cc0f2c0debe7",
              "status": "affected",
              "version": "9b8b84879d4adc506b0d3944e20b28d9f3f6994b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/mpt3sas/mpt3sas_scsih.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "version": "6.17"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          },
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              "value": "AV:L - The vulnerable code is a SCSI/NVMe storage HBA driver with no network exposure; the overflow is reached by issuing block I/O to an NVMe device behind the controller, requiring local access to the affected system.\nAC:L - On an affected configuration (an NVMe drive reporting MDTS \u003e 2 MiB behind the HBA), the uncapped max_hw_sectors lets a single \u003e2 MiB I/O reach the driver, so the attacker reliably overflows the fixed 512-entry PRP buffer with no race or uncontrolled condition.\nPR:L - An ordinary unprivileged local user with read/write access to a file or block device on the NVMe drive can issue a large O_DIRECT request that the block layer submits as one oversized I/O; no root or special capability is needed.\nUI:N - The attacker triggers the overflow directly by submitting their own large I/O; no action by another user is required.\nS:U - The corruption is confined to kernel memory within the same security authority; there is no VM/IOMMU/sandbox boundary crossing.\nC:H - The out-of-bounds write corrupts the contiguous DMA pool holding PRP descriptors for other in-flight commands, and such memory corruption of DMA address lists can be leveraged to misdirect DMA and disclose memory contents.\nI:H - This is an out-of-bounds/heap write past the fixed PRP DMA buffer, corrupting adjacent kernel DMA-pool memory with attacker-influenced (page-address) data \u2014 classic memory-corruption integrity impact.\nA:H - Overrunning the fixed PRP buffer corrupts kernel memory and leads to a kernel oops/panic, as documented in the fix (\"may lead to a kernel oops\")."
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        {
          "url": "https://git.kernel.org/stable/c/04631f55afc543d5431a2bdee7f6cc0f2c0debe7"
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    "datePublished": "2026-05-28T09:35:09.126Z",
    "dateReserved": "2026-05-13T15:03:33.097Z",
    "dateUpdated": "2026-08-05T12:29:39.746Z",
    "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

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.