CVE-2026-53154 (GCVE-0-2026-53154)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-06-25 08:38
VLAI
Title
mm/hugetlb: restore reservation on error in hugetlb folio copy paths
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: restore reservation on error in hugetlb folio copy paths Two sites in mm/hugetlb.c allocate a hugetlb folio via alloc_hugetlb_folio() (consuming a VMA reservation) and then call copy_user_large_folio(), which became int-returning in commit 1cb9dc4b475c ("mm: hwpoison: support recovery from HugePage copy-on-write faults") and can now fail (e.g. -EHWPOISON on a hwpoisoned source page). On the failure path, folio_put() restores the global hugetlb pool count through free_huge_folio(), but the per-VMA reservation map entry is left marked consumed: - hugetlb_mfill_atomic_pte() resubmission path (UFFDIO_COPY) - copy_hugetlb_page_range() fork-time CoW path when hugetlb_try_dup_anon_rmap() fails (rare: pinned hugetlb anon folio under fork) User-visible effect: on UFFDIO_COPY into a private hugetlb VMA where the resubmission copy fails, the reservation for that address is leaked from the VMA's reserve map. A subsequent fault at the same address takes the no-reservation path, and under hugetlb pool pressure the task is SIGBUSed at an address it had previously reserved. The fork-time CoW path leaks the same way in the child VMA's reserve map, though it requires the much rarer combination of pinned hugetlb anon page + hwpoisoned source. Add the missing restore_reserve_on_error() call before folio_put() on both error paths.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1cb9dc4b475c7418f925ab0c97b6750007d9f52e , < 8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38 (git)
Affected: 1cb9dc4b475c7418f925ab0c97b6750007d9f52e , < e47bf16af3c45470ea32f2241fa69aefe0dd61bd (git)
Affected: 1cb9dc4b475c7418f925ab0c97b6750007d9f52e , < c72469ac0f274bde3f0df60a4584e14a123d0aa6 (git)
Affected: 1cb9dc4b475c7418f925ab0c97b6750007d9f52e , < 45e33d43243d71d089af42f5077b8213cee6610f (git)
Affected: 1cb9dc4b475c7418f925ab0c97b6750007d9f52e , < 40c81856e622a9dc59294a90d169ac07ea25b0b0 (git)
Create a notification for this product.
Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/hugetlb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38",
              "status": "affected",
              "version": "1cb9dc4b475c7418f925ab0c97b6750007d9f52e",
              "versionType": "git"
            },
            {
              "lessThan": "e47bf16af3c45470ea32f2241fa69aefe0dd61bd",
              "status": "affected",
              "version": "1cb9dc4b475c7418f925ab0c97b6750007d9f52e",
              "versionType": "git"
            },
            {
              "lessThan": "c72469ac0f274bde3f0df60a4584e14a123d0aa6",
              "status": "affected",
              "version": "1cb9dc4b475c7418f925ab0c97b6750007d9f52e",
              "versionType": "git"
            },
            {
              "lessThan": "45e33d43243d71d089af42f5077b8213cee6610f",
              "status": "affected",
              "version": "1cb9dc4b475c7418f925ab0c97b6750007d9f52e",
              "versionType": "git"
            },
            {
              "lessThan": "40c81856e622a9dc59294a90d169ac07ea25b0b0",
              "status": "affected",
              "version": "1cb9dc4b475c7418f925ab0c97b6750007d9f52e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/hugetlb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "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": "6.6.143",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.94",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.36",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.13",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hugetlb: restore reservation on error in hugetlb folio copy paths\n\nTwo sites in mm/hugetlb.c allocate a hugetlb folio via\nalloc_hugetlb_folio() (consuming a VMA reservation) and then call\ncopy_user_large_folio(), which became int-returning in commit 1cb9dc4b475c\n(\"mm: hwpoison: support recovery from HugePage copy-on-write faults\") and\ncan now fail (e.g.  -EHWPOISON on a hwpoisoned source page).  On the\nfailure path, folio_put() restores the global hugetlb pool count through\nfree_huge_folio(), but the per-VMA reservation map entry is left marked\nconsumed:\n\n  - hugetlb_mfill_atomic_pte() resubmission path (UFFDIO_COPY)\n  - copy_hugetlb_page_range() fork-time CoW path when\n    hugetlb_try_dup_anon_rmap() fails (rare: pinned hugetlb anon\n    folio under fork)\n\nUser-visible effect: on UFFDIO_COPY into a private hugetlb VMA where the\nresubmission copy fails, the reservation for that address is leaked from\nthe VMA\u0027s reserve map.  A subsequent fault at the same address takes the\nno-reservation path, and under hugetlb pool pressure the task is SIGBUSed\nat an address it had previously reserved.  The fork-time CoW path leaks\nthe same way in the child VMA\u0027s reserve map, though it requires the much\nrarer combination of pinned hugetlb anon page + hwpoisoned source.\n\nAdd the missing restore_reserve_on_error() call before folio_put() on both\nerror paths."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:38:38.168Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38"
        },
        {
          "url": "https://git.kernel.org/stable/c/e47bf16af3c45470ea32f2241fa69aefe0dd61bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/c72469ac0f274bde3f0df60a4584e14a123d0aa6"
        },
        {
          "url": "https://git.kernel.org/stable/c/45e33d43243d71d089af42f5077b8213cee6610f"
        },
        {
          "url": "https://git.kernel.org/stable/c/40c81856e622a9dc59294a90d169ac07ea25b0b0"
        }
      ],
      "title": "mm/hugetlb: restore reservation on error in hugetlb folio copy paths",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53154",
    "datePublished": "2026-06-25T08:38:38.168Z",
    "dateReserved": "2026-06-09T07:44:35.388Z",
    "dateUpdated": "2026-06-25T08:38:38.168Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-53154",
      "date": "2026-07-16",
      "epss": "0.00122",
      "percentile": "0.02314"
    },
    "microsoft_vex": {
      "current_release_date": "2026-06-28T01:52:51.000Z",
      "cve": "CVE-2026-53154",
      "id": "msrc_CVE-2026-53154",
      "initial_release_date": "2026-06-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "mm/hugetlb: restore reservation on error in hugetlb folio copy paths",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53154.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53154\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-25T09:16:32.770\",\"lastModified\":\"2026-07-07T20:12:41.993\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/hugetlb: restore reservation on error in hugetlb folio copy paths\\n\\nTwo sites in mm/hugetlb.c allocate a hugetlb folio via\\nalloc_hugetlb_folio() (consuming a VMA reservation) and then call\\ncopy_user_large_folio(), which became int-returning in commit 1cb9dc4b475c\\n(\\\"mm: hwpoison: support recovery from HugePage copy-on-write faults\\\") and\\ncan now fail (e.g.  -EHWPOISON on a hwpoisoned source page).  On the\\nfailure path, folio_put() restores the global hugetlb pool count through\\nfree_huge_folio(), but the per-VMA reservation map entry is left marked\\nconsumed:\\n\\n  - hugetlb_mfill_atomic_pte() resubmission path (UFFDIO_COPY)\\n  - copy_hugetlb_page_range() fork-time CoW path when\\n    hugetlb_try_dup_anon_rmap() fails (rare: pinned hugetlb anon\\n    folio under fork)\\n\\nUser-visible effect: on UFFDIO_COPY into a private hugetlb VMA where the\\nresubmission copy fails, the reservation for that address is leaked from\\nthe VMA\u0027s reserve map.  A subsequent fault at the same address takes the\\nno-reservation path, and under hugetlb pool pressure the task is SIGBUSed\\nat an address it had previously reserved.  The fork-time CoW path leaks\\nthe same way in the child VMA\u0027s reserve map, though it requires the much\\nrarer combination of pinned hugetlb anon page + hwpoisoned source.\\n\\nAdd the missing restore_reserve_on_error() call before folio_put() on both\\nerror paths.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"mm/hugetlb.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1cb9dc4b475c7418f925ab0c97b6750007d9f52e\",\"lessThan\":\"8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1cb9dc4b475c7418f925ab0c97b6750007d9f52e\",\"lessThan\":\"e47bf16af3c45470ea32f2241fa69aefe0dd61bd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1cb9dc4b475c7418f925ab0c97b6750007d9f52e\",\"lessThan\":\"c72469ac0f274bde3f0df60a4584e14a123d0aa6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1cb9dc4b475c7418f925ab0c97b6750007d9f52e\",\"lessThan\":\"45e33d43243d71d089af42f5077b8213cee6610f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1cb9dc4b475c7418f925ab0c97b6750007d9f52e\",\"lessThan\":\"40c81856e622a9dc59294a90d169ac07ea25b0b0\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"mm/hugetlb.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.4\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.4\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.143\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.94\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.36\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.13\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-772\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.4\",\"versionEndExcluding\":\"6.6.143\",\"matchCriteriaId\":\"BC1232CA-DA4F-4208-AB54-BDD1212D2093\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.94\",\"matchCriteriaId\":\"85421C0C-ABDE-4357-971C-67F9087DE1B9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.36\",\"matchCriteriaId\":\"389025D2-958D-41BD-BD96-70ED1033A9F3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"7.0.13\",\"matchCriteriaId\":\"6A64BF9F-3BCA-42FD-98CB-8F03474D2B1E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"B1EF7059-E670-45F4-B422-54C40FA86390\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"0D38F0BF-A728-4133-A358-D44A2F7EE6D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"EC732D08-5F7B-46D9-B154-E60C7F4F0A97\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E5910A9D-F60A-409A-B486-FE66BFEBA9B9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"81DFF19E-9CF8-49C6-8C36-1E4038622933\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"B0E8FC71-3952-444C-83E9-718DBBBEC615\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/40c81856e622a9dc59294a90d169ac07ea25b0b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/45e33d43243d71d089af42f5077b8213cee6610f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c72469ac0f274bde3f0df60a4584e14a123d0aa6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e47bf16af3c45470ea32f2241fa69aefe0dd61bd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-07T20:35:46+00:00",
      "cve": "CVE-2026-53154",
      "id": "CVE-2026-53154",
      "initial_release_date": "2026-06-25T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mm/hugetlb: restore reservation on error in hugetlb folio copy paths",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53154.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.