Vulnerability-Lookup

GHSA-76HH-2V3C-VM3V

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-10-15 03:35

Details

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

md/raid5: validate payload size before accessing journal metadata

r5c_recovery_analyze_meta_block() and r5l_recovery_verify_data_checksum_for_mb() iterate over payloads in a journal metadata block using on-disk payload size fields without validating them against the remaining space in the metadata block.

A corrupted journal contains payload sizes extending beyond the PAGE_SIZE boundary can cause out-of-bounds reads when accessing payload fields or computing offsets.

Add bounds validation for each payload type to ensure the full payload fits within meta_size before processing.

Severity

7.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-46070"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:28Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: validate payload size before accessing journal metadata\n\nr5c_recovery_analyze_meta_block() and\nr5l_recovery_verify_data_checksum_for_mb() iterate over payloads in a\njournal metadata block using on-disk payload size fields without\nvalidating them against the remaining space in the metadata block.\n\nA corrupted journal contains payload sizes extending beyond the PAGE_SIZE\nboundary can cause out-of-bounds reads when accessing payload fields or\ncomputing offsets.\n\nAdd bounds validation for each payload type to ensure the full payload\nfits within meta_size before processing.",
  "id": "GHSA-76hh-2v3c-vm3v",
  "modified": "2026-10-15T03:35:59Z",
  "published": "2026-05-27T15:33:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46070"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c96c6f01d84b5c67db1bf1cc8591c0b7146826fc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef4851d8324fd978ca1ff9ec76a275438f887743"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-46070 (GCVE-0-2026-46070)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:57 – Updated: 2026-10-15 01:20

Title

md/raid5: validate payload size before accessing journal metadata

Summary

In the Linux kernel, the following vulnerability has been resolved: md/raid5: validate payload size before accessing journal metadata r5c_recovery_analyze_meta_block() and r5l_recovery_verify_data_checksum_for_mb() iterate over payloads in a journal metadata block using on-disk payload size fields without validating them against the remaining space in the metadata block. A corrupted journal contains payload sizes extending beyond the PAGE_SIZE boundary can cause out-of-bounds reads when accessing payload fields or computing offsets. Add bounds validation for each payload type to ensure the full payload fits within meta_size before processing.

Severity

7.1 (High)


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

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6665 records in the last 180 days details

References

9 references

URL	Tags
https://git.kernel.org/stable/c/c96c6f01d84b5c67d…
https://git.kernel.org/stable/c/ef4851d8324fd978c…
https://git.kernel.org/stable/c/28d3ff7109c66e99d…
https://git.kernel.org/stable/c/33698bd1b2db9764a…
https://git.kernel.org/stable/c/c3a1cf78bd1bbb51b…
https://git.kernel.org/stable/c/73ce72edd11337480…
https://git.kernel.org/stable/c/406aa86394ead347c…
https://git.kernel.org/stable/c/b0cc3ae97e893bf54…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version
Linux	Linux	Affected: b4c625c67362b3940f619c1a836b4e8329106658 , < c96c6f01d84b5c67db1bf1cc8591c0b7146826fc (git) Affected: b4c625c67362b3940f619c1a836b4e8329106658 , < ef4851d8324fd978ca1ff9ec76a275438f887743 (git) Affected: b4c625c67362b3940f619c1a836b4e8329106658 , < 28d3ff7109c66e99dc1b7cddacb5c760849620ef (git) Affected: b4c625c67362b3940f619c1a836b4e8329106658 , < 33698bd1b2db9764a29df7751533d33967ff5c98 (git) Affected: b4c625c67362b3940f619c1a836b4e8329106658 , < c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e (git) Affected: b4c625c67362b3940f619c1a836b4e8329106658 , < 73ce72edd113374801045924d4417199963f73a3 (git) Affected: b4c625c67362b3940f619c1a836b4e8329106658 , < 406aa86394ead347c47428fb51b6359bdaa2257d (git) Affected: b4c625c67362b3940f619c1a836b4e8329106658 , < b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9 (git)
Linux	Linux	Affected: 4.10 Unaffected: 0 , < 4.10 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < * (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T01:20:21.951Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid5-cache.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c96c6f01d84b5c67db1bf1cc8591c0b7146826fc",
              "status": "affected",
              "version": "b4c625c67362b3940f619c1a836b4e8329106658",
              "versionType": "git"
            },
            {
              "lessThan": "ef4851d8324fd978ca1ff9ec76a275438f887743",
              "status": "affected",
              "version": "b4c625c67362b3940f619c1a836b4e8329106658",
              "versionType": "git"
            },
            {
              "lessThan": "28d3ff7109c66e99dc1b7cddacb5c760849620ef",
              "status": "affected",
              "version": "b4c625c67362b3940f619c1a836b4e8329106658",
              "versionType": "git"
            },
            {
              "lessThan": "33698bd1b2db9764a29df7751533d33967ff5c98",
              "status": "affected",
              "version": "b4c625c67362b3940f619c1a836b4e8329106658",
              "versionType": "git"
            },
            {
              "lessThan": "c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e",
              "status": "affected",
              "version": "b4c625c67362b3940f619c1a836b4e8329106658",
              "versionType": "git"
            },
            {
              "lessThan": "73ce72edd113374801045924d4417199963f73a3",
              "status": "affected",
              "version": "b4c625c67362b3940f619c1a836b4e8329106658",
              "versionType": "git"
            },
            {
              "lessThan": "406aa86394ead347c47428fb51b6359bdaa2257d",
              "status": "affected",
              "version": "b4c625c67362b3940f619c1a836b4e8329106658",
              "versionType": "git"
            },
            {
              "lessThan": "b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9",
              "status": "affected",
              "version": "b4c625c67362b3940f619c1a836b4e8329106658",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid5-cache.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.10"
            },
            {
              "lessThan": "4.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "4.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "4.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "4.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "4.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.86",
                  "versionStartIncluding": "4.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.27",
                  "versionStartIncluding": "4.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.4",
                  "versionStartIncluding": "4.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "4.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: validate payload size before accessing journal metadata\n\nr5c_recovery_analyze_meta_block() and\nr5l_recovery_verify_data_checksum_for_mb() iterate over payloads in a\njournal metadata block using on-disk payload size fields without\nvalidating them against the remaining space in the metadata block.\n\nA corrupted journal contains payload sizes extending beyond the PAGE_SIZE\nboundary can cause out-of-bounds reads when accessing payload fields or\ncomputing offsets.\n\nAdd bounds validation for each payload type to ensure the full payload\nfits within meta_size before processing."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The malicious input is the on-disk journal metadata processed during local MD array assembly/start; it is not a network-facing service. Even when the journal sits on remote storage, the vulnerable recovery code runs locally against a block device, so the vector is Local.\nAC:L - A crafted journal block deterministically triggers the OOB read on every assembly; the required CRC is fully attacker-computable from the publicly-stored array UUID, and there is no race or uncontrolled condition.\nPR:L - Exploitation only requires planting crafted bytes on the journal block device (e.g. disk-group/device write access), after which routine or boot-time auto-assembly processes it; this is a low-privilege primitive rather than full init-namespace root.\nUI:N - Array assembly/journal recovery runs automatically at boot or device hot-plug, so no human interaction is needed once the corrupted journal is in place.\nS:U - The OOB read stays within the kernel\u0027s own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The flaw is a large, unbounded out-of-bounds read of adjacent kernel memory (FLUSH count up to ~500M entries), which per scoring guidance for unbounded OOB reads is treated as a high confidentiality impact.\nI:N - The fix adds only read-bounds validation; the vulnerability provides no out-of-bounds write or corruption primitive against system data, so there is no integrity impact.\nA:H - OOB access to unmapped memory (or the int overflow / BUG_ON in the read path) causes a kernel oops/panic, crashing the host during array assembly."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:29:28.864Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c96c6f01d84b5c67db1bf1cc8591c0b7146826fc"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef4851d8324fd978ca1ff9ec76a275438f887743"
        },
        {
          "url": "https://git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620ef"
        },
        {
          "url": "https://git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98"
        },
        {
          "url": "https://git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e"
        },
        {
          "url": "https://git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257d"
        },
        {
          "url": "https://git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9"
        }
      ],
      "title": "md/raid5: validate payload size before accessing journal metadata",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46070",
    "datePublished": "2026-05-27T12:57:54.345Z",
    "dateReserved": "2026-05-13T15:03:33.095Z",
    "dateUpdated": "2026-10-15T01:20:21.951Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

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.

Action not permitted