fkie_nvd - fkie_cve-2025-40353

FKIE_CVE-2025-40353

Vulnerability from fkie_nvd - Published: 2025-12-16 14:15 - Updated: 2025-12-18 15:08

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: arm64: mte: Do not warn if the page is already tagged in copy_highpage() The arm64 copy_highpage() assumes that the destination page is newly allocated and not MTE-tagged (PG_mte_tagged unset) and warns accordingly. However, following commit 060913999d7a ("mm: migrate: support poisoned recover from migrate folio"), folio_mc_copy() is called before __folio_migrate_mapping(). If the latter fails (-EAGAIN), the copy will be done again to the same destination page. Since copy_highpage() already set the PG_mte_tagged flag, this second copy will warn. Replace the WARN_ON_ONCE(page already tagged) in the arm64 copy_highpage() with a comment.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0bbf3fc6e9211fce9889fe8efbb89c220504d617
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5ff5765a1fc526f07d3bbaedb061d970eb13bcf4
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b98c94eed4a975e0c80b7e90a649a46967376f58

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: mte: Do not warn if the page is already tagged in copy_highpage()\n\nThe arm64 copy_highpage() assumes that the destination page is newly\nallocated and not MTE-tagged (PG_mte_tagged unset) and warns\naccordingly. However, following commit 060913999d7a (\"mm: migrate:\nsupport poisoned recover from migrate folio\"), folio_mc_copy() is called\nbefore __folio_migrate_mapping(). If the latter fails (-EAGAIN), the\ncopy will be done again to the same destination page. Since\ncopy_highpage() already set the PG_mte_tagged flag, this second copy\nwill warn.\n\nReplace the WARN_ON_ONCE(page already tagged) in the arm64\ncopy_highpage() with a comment."
    }
  ],
  "id": "CVE-2025-40353",
  "lastModified": "2025-12-18T15:08:25.907",
  "metrics": {},
  "published": "2025-12-16T14:15:47.203",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0bbf3fc6e9211fce9889fe8efbb89c220504d617"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5ff5765a1fc526f07d3bbaedb061d970eb13bcf4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b98c94eed4a975e0c80b7e90a649a46967376f58"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2025-40353 (GCVE-0-2025-40353)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:30 – Updated: 2025-12-16 13:30

Title

arm64: mte: Do not warn if the page is already tagged in copy_highpage()

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/5ff5765a1fc526f07…
	https://git.kernel.org/stable/c/0bbf3fc6e9211fce9…
	https://git.kernel.org/stable/c/b98c94eed4a975e0c…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5ff5765a1fc526f07d3bbaedb061d970eb13bcf4 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0bbf3fc6e9211fce9889fe8efbb89c220504d617 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b98c94eed4a975e0c80b7e90a649a46967376f58 (git)

Linux

Unaffected: 6.12.56 , ≤ 6.12.* (semver)
Unaffected: 6.17.6 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/mm/copypage.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5ff5765a1fc526f07d3bbaedb061d970eb13bcf4",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "0bbf3fc6e9211fce9889fe8efbb89c220504d617",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "b98c94eed4a975e0c80b7e90a649a46967376f58",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/mm/copypage.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.56",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: mte: Do not warn if the page is already tagged in copy_highpage()\n\nThe arm64 copy_highpage() assumes that the destination page is newly\nallocated and not MTE-tagged (PG_mte_tagged unset) and warns\naccordingly. However, following commit 060913999d7a (\"mm: migrate:\nsupport poisoned recover from migrate folio\"), folio_mc_copy() is called\nbefore __folio_migrate_mapping(). If the latter fails (-EAGAIN), the\ncopy will be done again to the same destination page. Since\ncopy_highpage() already set the PG_mte_tagged flag, this second copy\nwill warn.\n\nReplace the WARN_ON_ONCE(page already tagged) in the arm64\ncopy_highpage() with a comment."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-16T13:30:26.273Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5ff5765a1fc526f07d3bbaedb061d970eb13bcf4"
        },
        {
          "url": "https://git.kernel.org/stable/c/0bbf3fc6e9211fce9889fe8efbb89c220504d617"
        },
        {
          "url": "https://git.kernel.org/stable/c/b98c94eed4a975e0c80b7e90a649a46967376f58"
        }
      ],
      "title": "arm64: mte: Do not warn if the page is already tagged in copy_highpage()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40353",
    "datePublished": "2025-12-16T13:30:26.273Z",
    "dateReserved": "2025-04-16T07:20:57.187Z",
    "dateUpdated": "2025-12-16T13:30:26.273Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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

FKIE_CVE-2025-40353

CVE-2025-40353 (GCVE-0-2025-40353)

Tags

Sightings

Nomenclature