{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-68321",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-16T14:48:05.295Z",
        "datePublished": "2025-12-16T15:44:19.066Z",
        "dateUpdated": "2026-08-05T12:10:53.192Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:10:53.192Z"
            },
            "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": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH"
                    },
                    "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."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/core/page_pool.c"
                    ],
                    "versions": [
                        {
                            "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                            "lessThan": "0ec2cd5c58793d0c622797cd5fbe26634b357210",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                            "lessThan": "9835a0fd59a1df5ec0740fdab6d50db68e0f10de",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                            "lessThan": "7613c06ffa89c1e2266fb532e23ef7dfdf269d73",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                            "lessThan": "3671a0775952026228ae44e096eb144bca75f8dc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                            "lessThan": "ab48dc0e23eb714b3f233f8e8f6deed7df2051f5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ff7d6b27f894f1469dc51ccb828b7363ccd9799f",
                            "lessThan": "f3b52167a0cb23b27414452fbc1278da2ee884fc",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/core/page_pool.c"
                    ],
                    "versions": [
                        {
                            "version": "4.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.197",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.159",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.117",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.58",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.8",
                            "lessThanOrEqual": "6.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "5.15.197"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            ],
            "references": [
                {
                    "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",
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}