{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-93211",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-17T16:02:15.093Z",
        "datePublished": "2026-09-24T15:10:34.407Z",
        "dateUpdated": "2026-10-19T09:07:23.361Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:07:23.361Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: initialize DRC hash table before registering shrinker\n\nshrinker_register() precedes the INIT_LIST_HEAD loop and the\ndrc_hashsize store. On weakly-ordered architectures (arm64, ppc),\na shrinker scan can observe drc_hashsize before the bucket list\nheads are initialized, causing a NULL deref in the DRC shrinker\ncallback.\n\nMove bucket initialization and the drc_hashsize store before\nshrinker_register() so the hash table is fully initialized before\nit becomes visible to the shrinker."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/nfsd/nfscache.c"
                    ],
                    "versions": [
                        {
                            "version": "8eea99a81c6f67c08fedd7db2ccd09aa93db69a7",
                            "lessThan": "f060f43a67635dbb393bf5dcbfc3e8b9a44942cb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8eea99a81c6f67c08fedd7db2ccd09aa93db69a7",
                            "lessThan": "b57bd8cb739cb3cf88bdb1a5903a42a707a5c282",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8eea99a81c6f67c08fedd7db2ccd09aa93db69a7",
                            "lessThan": "431c70ca5163c98c746f22f16cd58ca5aefec6dc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8eea99a81c6f67c08fedd7db2ccd09aa93db69a7",
                            "lessThan": "b0c58934f5cc4f05b63ef6605dd10c1d0d489e88",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/nfsd/nfscache.c"
                    ],
                    "versions": [
                        {
                            "version": "6.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.109",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.50",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.12.109"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.18.50"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.2.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f060f43a67635dbb393bf5dcbfc3e8b9a44942cb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b57bd8cb739cb3cf88bdb1a5903a42a707a5c282"
                },
                {
                    "url": "https://git.kernel.org/stable/c/431c70ca5163c98c746f22f16cd58ca5aefec6dc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b0c58934f5cc4f05b63ef6605dd10c1d0d489e88"
                }
            ],
            "title": "nfsd: initialize DRC hash table before registering shrinker",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}