Vulnerability-Lookup

GHSA-X95W-MWF5-X656

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

Details

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

mtd: intel-dg: Fix accessing regions before setting nregions

The regions array is counted by nregions, but it's set only after accessing it:

[] UBSAN: array-index-out-of-bounds in drivers/mtd/devices/mtd_intel_dg.c:750:15 [] index 0 is out of range for type ' [*]'

Fix it by also fixing an undesired behavior: the loop silently ignores ENOMEM and continues setting the other entries.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-45896"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:03Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: intel-dg: Fix accessing regions before setting nregions\n\nThe regions array is counted by nregions, but it\u0027s set only after\naccessing it:\n\n[] UBSAN: array-index-out-of-bounds in drivers/mtd/devices/mtd_intel_dg.c:750:15\n[] index 0 is out of range for type \u0027\u003cunknown\u003e [*]\u0027\n\nFix it by also fixing an undesired behavior: the loop silently ignores\nENOMEM and continues setting the other entries.",
  "id": "GHSA-x95w-mwf5-x656",
  "modified": "2026-05-27T15:33:15Z",
  "published": "2026-05-27T15:33:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45896"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/721bd22bcf45a63ebd9bd0f478ef721b45cc5383"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/779c59274d03cc5c07237a2c845dfb71cff77705"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d58fca8513414b15387460b14a7a0a30405b9c9e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-45896 (GCVE-0-2026-45896)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:17 – Updated: 2026-05-27 12:17

Title

mtd: intel-dg: Fix accessing regions before setting nregions

Summary

In the Linux kernel, the following vulnerability has been resolved: mtd: intel-dg: Fix accessing regions before setting nregions The regions array is counted by nregions, but it's set only after accessing it: [] UBSAN: array-index-out-of-bounds in drivers/mtd/devices/mtd_intel_dg.c:750:15 [] index 0 is out of range for type '<unknown> [*]' Fix it by also fixing an undesired behavior: the loop silently ignores ENOMEM and continues setting the other entries.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/721bd22bcf45a63eb…
https://git.kernel.org/stable/c/d58fca8513414b153…
https://git.kernel.org/stable/c/779c59274d03cc5c0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ceb5ab3cb64637952657be23d347e1c79dd02212 , < 721bd22bcf45a63ebd9bd0f478ef721b45cc5383 (git) Affected: ceb5ab3cb64637952657be23d347e1c79dd02212 , < d58fca8513414b15387460b14a7a0a30405b9c9e (git) Affected: ceb5ab3cb64637952657be23d347e1c79dd02212 , < 779c59274d03cc5c07237a2c845dfb71cff77705 (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/devices/mtd_intel_dg.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "721bd22bcf45a63ebd9bd0f478ef721b45cc5383",
              "status": "affected",
              "version": "ceb5ab3cb64637952657be23d347e1c79dd02212",
              "versionType": "git"
            },
            {
              "lessThan": "d58fca8513414b15387460b14a7a0a30405b9c9e",
              "status": "affected",
              "version": "ceb5ab3cb64637952657be23d347e1c79dd02212",
              "versionType": "git"
            },
            {
              "lessThan": "779c59274d03cc5c07237a2c845dfb71cff77705",
              "status": "affected",
              "version": "ceb5ab3cb64637952657be23d347e1c79dd02212",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/mtd/devices/mtd_intel_dg.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": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.14",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: intel-dg: Fix accessing regions before setting nregions\n\nThe regions array is counted by nregions, but it\u0027s set only after\naccessing it:\n\n[] UBSAN: array-index-out-of-bounds in drivers/mtd/devices/mtd_intel_dg.c:750:15\n[] index 0 is out of range for type \u0027\u003cunknown\u003e [*]\u0027\n\nFix it by also fixing an undesired behavior: the loop silently ignores\nENOMEM and continues setting the other entries."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:17:06.332Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/721bd22bcf45a63ebd9bd0f478ef721b45cc5383"
        },
        {
          "url": "https://git.kernel.org/stable/c/d58fca8513414b15387460b14a7a0a30405b9c9e"
        },
        {
          "url": "https://git.kernel.org/stable/c/779c59274d03cc5c07237a2c845dfb71cff77705"
        }
      ],
      "title": "mtd: intel-dg: Fix accessing regions before setting nregions",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45896",
    "datePublished": "2026-05-27T12:17:06.332Z",
    "dateReserved": "2026-05-13T15:03:33.083Z",
    "dateUpdated": "2026-05-27T12:17:06.332Z",
    "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.

Action not permitted

GHSA-X95W-MWF5-X656

CVE-2026-45896 (GCVE-0-2026-45896)

Tags

Sightings

Nomenclature