CVE-2025-68321 (GCVE-0-2025-68321)

Vulnerability from cvelistv5 – Published: 2025-12-16 15:44 – Updated: 2026-10-30 12:23
VLAI
Title
page_pool: always add GFP_NOWARN for ATOMIC allocations
Summary
In the Linux kernel, the following vulnerability has been resolved: page_pool: always add GFP_NOWARN for ATOMIC allocations Driver authors often forget to add GFP_NOWARN for page allocation from the datapath. This is annoying to users as OOMs are a fact of life, and we pretty much expect network Rx to hit page allocation failures during OOM. Make page pool add GFP_NOWARN for ATOMIC allocations by default.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:04 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ff7d6b27f894f1469dc51ccb828b7363ccd9799f , < 3c4c2c96d00d112626736cc865b3c75aa8fb6de3 (git)
Affected: ff7d6b27f894f1469dc51ccb828b7363ccd9799f , < 0ec2cd5c58793d0c622797cd5fbe26634b357210 (git)
Affected: ff7d6b27f894f1469dc51ccb828b7363ccd9799f , < 9835a0fd59a1df5ec0740fdab6d50db68e0f10de (git)
Affected: ff7d6b27f894f1469dc51ccb828b7363ccd9799f , < 7613c06ffa89c1e2266fb532e23ef7dfdf269d73 (git)
Affected: ff7d6b27f894f1469dc51ccb828b7363ccd9799f , < 3671a0775952026228ae44e096eb144bca75f8dc (git)
Affected: ff7d6b27f894f1469dc51ccb828b7363ccd9799f , < ab48dc0e23eb714b3f233f8e8f6deed7df2051f5 (git)
Affected: ff7d6b27f894f1469dc51ccb828b7363ccd9799f , < f3b52167a0cb23b27414452fbc1278da2ee884fc (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.18
Unaffected: 0 , < 4.18 (semver)
Unaffected: 5.10.273 , ≤ 5.10.* (semver)
Unaffected: 5.15.197 , ≤ 5.15.* (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.58 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-68321",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:04:40.319034Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-16T15:09:42.847Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/page_pool.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3c4c2c96d00d112626736cc865b3c75aa8fb6de3",
              "status": "affected",
              "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
              "versionType": "git"
            },
            {
              "lessThan": "0ec2cd5c58793d0c622797cd5fbe26634b357210",
              "status": "affected",
              "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
              "versionType": "git"
            },
            {
              "lessThan": "9835a0fd59a1df5ec0740fdab6d50db68e0f10de",
              "status": "affected",
              "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
              "versionType": "git"
            },
            {
              "lessThan": "7613c06ffa89c1e2266fb532e23ef7dfdf269d73",
              "status": "affected",
              "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
              "versionType": "git"
            },
            {
              "lessThan": "3671a0775952026228ae44e096eb144bca75f8dc",
              "status": "affected",
              "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
              "versionType": "git"
            },
            {
              "lessThan": "ab48dc0e23eb714b3f233f8e8f6deed7df2051f5",
              "status": "affected",
              "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
              "versionType": "git"
            },
            {
              "lessThan": "f3b52167a0cb23b27414452fbc1278da2ee884fc",
              "status": "affected",
              "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/page_pool.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            },
            {
              "lessThan": "4.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.273",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.197",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.58",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "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": "5.10.273",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.197",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.159",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.117",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.58",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.8",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npage_pool: always add GFP_NOWARN for ATOMIC allocations\n\nDriver authors often forget to add GFP_NOWARN for page allocation\nfrom the datapath. This is annoying to users as OOMs are a fact\nof life, and we pretty much expect network Rx to hit page allocation\nfailures during OOM. Make page pool add GFP_NOWARN for ATOMIC allocations\nby default."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - Remote Ethernet traffic can reach RX NAPI buffer-refill paths in page-pool drivers such as bnxt and mlx4 before firewall or protocol authentication.\nAC:L - A sustained packet flood can drain recycled buffers and force atomic slow-path allocations under memory pressure; no race or attacker-independent timing condition is required.\nPR:N - The receive path processes packets before authentication and requires no capability, local account, or namespace access.\nUI:N - No victim action is required once the affected network interface is active.\nS:U - The vulnerability and its availability effects remain within the host kernel and its logging resources.\nC:N - The bug creates no out-of-bounds access, use-after-free, or attacker-accessible memory disclosure; diagnostics are not returned to the remote peer.\nI:N - Adding __GFP_NOWARN changes only diagnostic emission and does not alter memory contents, allocation results, or control flow.\nA:H - Sustained failures repeatedly invoke expensive stack and memory-state dumps, which can monopolize slow console or logging paths and exhaust log storage on constrained systems. Although globally rate-limited, the resulting persistent disruption can become severe in a reasonable network-appliance deployment."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:23:12.656Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3c4c2c96d00d112626736cc865b3c75aa8fb6de3"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ec2cd5c58793d0c622797cd5fbe26634b357210"
        },
        {
          "url": "https://git.kernel.org/stable/c/9835a0fd59a1df5ec0740fdab6d50db68e0f10de"
        },
        {
          "url": "https://git.kernel.org/stable/c/7613c06ffa89c1e2266fb532e23ef7dfdf269d73"
        },
        {
          "url": "https://git.kernel.org/stable/c/3671a0775952026228ae44e096eb144bca75f8dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/ab48dc0e23eb714b3f233f8e8f6deed7df2051f5"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3b52167a0cb23b27414452fbc1278da2ee884fc"
        }
      ],
      "title": "page_pool: always add GFP_NOWARN for ATOMIC allocations",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68321",
    "datePublished": "2025-12-16T15:44:19.066Z",
    "dateReserved": "2025-12-16T14:48:05.295Z",
    "dateUpdated": "2026-10-30T12:23:12.656Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-68321",
      "date": "2026-10-30",
      "epss": "0.00441",
      "percentile": "0.38354"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "net/core/page_pool.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "3c4c2c96d00d112626736cc865b3c75aa8fb6de3",
                    "status": "affected",
                    "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0ec2cd5c58793d0c622797cd5fbe26634b357210",
                    "status": "affected",
                    "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "9835a0fd59a1df5ec0740fdab6d50db68e0f10de",
                    "status": "affected",
                    "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7613c06ffa89c1e2266fb532e23ef7dfdf269d73",
                    "status": "affected",
                    "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "3671a0775952026228ae44e096eb144bca75f8dc",
                    "status": "affected",
                    "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ab48dc0e23eb714b3f233f8e8f6deed7df2051f5",
                    "status": "affected",
                    "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f3b52167a0cb23b27414452fbc1278da2ee884fc",
                    "status": "affected",
                    "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "net/core/page_pool.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "4.18"
                  },
                  {
                    "lessThan": "4.18",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.273",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.197",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.159",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.117",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.58",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.17.*",
                    "status": "unaffected",
                    "version": "6.17.8",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.18",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npage_pool: always add GFP_NOWARN for ATOMIC allocations\n\nDriver authors often forget to add GFP_NOWARN for page allocation\nfrom the datapath. This is annoying to users as OOMs are a fact\nof life, and we pretty much expect network Rx to hit page allocation\nfailures during OOM. Make page pool add GFP_NOWARN for ATOMIC allocations\nby default."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\npage_pool: siempre a\u00f1adir GFP_NOWARN para asignaciones ATOMIC\n\nLos autores de controladores a menudo olvidan a\u00f1adir GFP_NOWARN para la asignaci\u00f3n de p\u00e1ginas desde la ruta de datos. Esto es molesto para los usuarios ya que los OOM son un hecho de la vida, y pr\u00e1cticamente esperamos que el Rx de red encuentre fallos en la asignaci\u00f3n de p\u00e1ginas durante OOM. Hacer que el page pool a\u00f1ada GFP_NOWARN para asignaciones ATOMIC por defecto."
          }
        ],
        "id": "CVE-2025-68321",
        "lastModified": "2026-10-30T13:18:20.360",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2025-68321",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:04:40.319034Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-12-16T16:16:11.690",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0ec2cd5c58793d0c622797cd5fbe26634b357210"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3671a0775952026228ae44e096eb144bca75f8dc"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3c4c2c96d00d112626736cc865b3c75aa8fb6de3"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7613c06ffa89c1e2266fb532e23ef7dfdf269d73"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9835a0fd59a1df5ec0740fdab6d50db68e0f10de"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ab48dc0e23eb714b3f233f8e8f6deed7df2051f5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f3b52167a0cb23b27414452fbc1278da2ee884fc"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-10-16T23:24:31+00:00",
      "cve": "CVE-2025-68321",
      "id": "CVE-2025-68321",
      "initial_release_date": "2025-12-16T00:00:00+00:00",
      "product_status:known_affected": "261",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service due to page allocation failures",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68321.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-68321",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-16T15:04:40.319034Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-16T15:04:40.871Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "net/core/page_pool.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "3c4c2c96d00d112626736cc865b3c75aa8fb6de3",
                  "status": "affected",
                  "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                  "versionType": "git"
                },
                {
                  "lessThan": "0ec2cd5c58793d0c622797cd5fbe26634b357210",
                  "status": "affected",
                  "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                  "versionType": "git"
                },
                {
                  "lessThan": "9835a0fd59a1df5ec0740fdab6d50db68e0f10de",
                  "status": "affected",
                  "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                  "versionType": "git"
                },
                {
                  "lessThan": "7613c06ffa89c1e2266fb532e23ef7dfdf269d73",
                  "status": "affected",
                  "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                  "versionType": "git"
                },
                {
                  "lessThan": "3671a0775952026228ae44e096eb144bca75f8dc",
                  "status": "affected",
                  "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                  "versionType": "git"
                },
                {
                  "lessThan": "ab48dc0e23eb714b3f233f8e8f6deed7df2051f5",
                  "status": "affected",
                  "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                  "versionType": "git"
                },
                {
                  "lessThan": "f3b52167a0cb23b27414452fbc1278da2ee884fc",
                  "status": "affected",
                  "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/core/page_pool.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "4.18"
                },
                {
                  "lessThan": "4.18",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.273",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.197",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.159",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.117",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.58",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.17.*",
                  "status": "unaffected",
                  "version": "6.17.8",
                  "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": "5.10.273",
                      "versionStartIncluding": "4.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.197",
                      "versionStartIncluding": "4.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.159",
                      "versionStartIncluding": "4.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.117",
                      "versionStartIncluding": "4.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.58",
                      "versionStartIncluding": "4.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.17.8",
                      "versionStartIncluding": "4.18",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.18",
                      "versionStartIncluding": "4.18",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npage_pool: always add GFP_NOWARN for ATOMIC allocations\n\nDriver authors often forget to add GFP_NOWARN for page allocation\nfrom the datapath. This is annoying to users as OOMs are a fact\nof life, and we pretty much expect network Rx to hit page allocation\nfailures during OOM. Make page pool add GFP_NOWARN for ATOMIC allocations\nby default."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:N - Remote Ethernet traffic can reach RX NAPI buffer-refill paths in page-pool drivers such as bnxt and mlx4 before firewall or protocol authentication.\nAC:L - A sustained packet flood can drain recycled buffers and force atomic slow-path allocations under memory pressure; no race or attacker-independent timing condition is required.\nPR:N - The receive path processes packets before authentication and requires no capability, local account, or namespace access.\nUI:N - No victim action is required once the affected network interface is active.\nS:U - The vulnerability and its availability effects remain within the host kernel and its logging resources.\nC:N - The bug creates no out-of-bounds access, use-after-free, or attacker-accessible memory disclosure; diagnostics are not returned to the remote peer.\nI:N - Adding __GFP_NOWARN changes only diagnostic emission and does not alter memory contents, allocation results, or control flow.\nA:H - Sustained failures repeatedly invoke expensive stack and memory-state dumps, which can monopolize slow console or logging paths and exhaust log storage on constrained systems. Although globally rate-limited, the resulting persistent disruption can become severe in a reasonable network-appliance deployment."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-30T12:23:12.656Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/3c4c2c96d00d112626736cc865b3c75aa8fb6de3"
            },
            {
              "url": "https://git.kernel.org/stable/c/0ec2cd5c58793d0c622797cd5fbe26634b357210"
            },
            {
              "url": "https://git.kernel.org/stable/c/9835a0fd59a1df5ec0740fdab6d50db68e0f10de"
            },
            {
              "url": "https://git.kernel.org/stable/c/7613c06ffa89c1e2266fb532e23ef7dfdf269d73"
            },
            {
              "url": "https://git.kernel.org/stable/c/3671a0775952026228ae44e096eb144bca75f8dc"
            },
            {
              "url": "https://git.kernel.org/stable/c/ab48dc0e23eb714b3f233f8e8f6deed7df2051f5"
            },
            {
              "url": "https://git.kernel.org/stable/c/f3b52167a0cb23b27414452fbc1278da2ee884fc"
            }
          ],
          "title": "page_pool: always add GFP_NOWARN for ATOMIC allocations",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2025-68321",
        "datePublished": "2025-12-16T15:44:19.066Z",
        "dateReserved": "2025-12-16T14:48:05.295Z",
        "dateUpdated": "2026-10-30T12:23:12.656Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.