Vulnerability-Lookup

GHSA-JQWW-WR6J-993J

Vulnerability from github – Published: 2026-06-08 18:31 – Updated: 2026-06-14 06:30

Details

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

mm/zone_device: do not touch device folio after calling ->folio_free()

The contents of a device folio can immediately change after calling ->folio_free(), as the folio may be reallocated by a driver with a different order. Instead of touching the folio again to extract the pgmap, use the local stack variable when calling percpu_ref_put_many().

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46277"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-08T17:16:45Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/zone_device: do not touch device folio after calling -\u003efolio_free()\n\nThe contents of a device folio can immediately change after calling\n-\u003efolio_free(), as the folio may be reallocated by a driver with a\ndifferent order.  Instead of touching the folio again to extract the\npgmap, use the local stack variable when calling percpu_ref_put_many().",
  "id": "GHSA-jqww-wr6j-993j",
  "modified": "2026-06-14T06:30:23Z",
  "published": "2026-06-08T18:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46277"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39928984956037cabd304321cb8f342e47421db5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85be0a262e39c706edb53c88af8afde2e98222ba"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-46277 (GCVE-0-2026-46277)

Vulnerability from cvelistv5 – Published: 2026-06-08 15:41 – Updated: 2026-06-14 18:05

Title

mm/zone_device: do not touch device folio after calling ->folio_free()

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/zone_device: do not touch device folio after calling ->folio_free() The contents of a device folio can immediately change after calling ->folio_free(), as the folio may be reallocated by a driver with a different order. Instead of touching the folio again to extract the pgmap, use the local stack variable when calling percpu_ref_put_many().

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

References

2 references

URL	Tags
https://git.kernel.org/stable/c/85be0a262e39c706e…
https://git.kernel.org/stable/c/39928984956037cab…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d245f9b4ab806733a77e51a218ca7b8bc3135cd9 , < 85be0a262e39c706edb53c88af8afde2e98222ba (git) Affected: d245f9b4ab806733a77e51a218ca7b8bc3135cd9 , < 39928984956037cabd304321cb8f342e47421db5 (git)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/memremap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "85be0a262e39c706edb53c88af8afde2e98222ba",
              "status": "affected",
              "version": "d245f9b4ab806733a77e51a218ca7b8bc3135cd9",
              "versionType": "git"
            },
            {
              "lessThan": "39928984956037cabd304321cb8f342e47421db5",
              "status": "affected",
              "version": "d245f9b4ab806733a77e51a218ca7b8bc3135cd9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/memremap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "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": "7.0.4",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/zone_device: do not touch device folio after calling -\u003efolio_free()\n\nThe contents of a device folio can immediately change after calling\n-\u003efolio_free(), as the folio may be reallocated by a driver with a\ndifferent order.  Instead of touching the folio again to extract the\npgmap, use the local stack variable when calling percpu_ref_put_many()."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T18:05:47.095Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/85be0a262e39c706edb53c88af8afde2e98222ba"
        },
        {
          "url": "https://git.kernel.org/stable/c/39928984956037cabd304321cb8f342e47421db5"
        }
      ],
      "title": "mm/zone_device: do not touch device folio after calling -\u003efolio_free()",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46277",
    "datePublished": "2026-06-08T15:41:19.760Z",
    "dateReserved": "2026-05-13T15:03:33.109Z",
    "dateUpdated": "2026-06-14T18:05:47.095Z",
    "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-JQWW-WR6J-993J

CVE-2026-46277 (GCVE-0-2026-46277)

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Sightings

Nomenclature