{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53480",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-10-01T11:39:39.402Z",
        "datePublished": "2025-10-01T11:42:48.919Z",
        "dateUpdated": "2026-05-11T19:45:48.153Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:45:48.153Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkobject: Add sanity check for kset->kobj.ktype in kset_register()\n\nWhen I register a kset in the following way:\n\tstatic struct kset my_kset;\n\tkobject_set_name(&my_kset.kobj, \"my_kset\");\n        ret = kset_register(&my_kset);\n\nA null pointer dereference exception is occurred:\n[ 4453.568337] Unable to handle kernel NULL pointer dereference at \\\nvirtual address 0000000000000028\n... ...\n[ 4453.810361] Call trace:\n[ 4453.813062]  kobject_get_ownership+0xc/0x34\n[ 4453.817493]  kobject_add_internal+0x98/0x274\n[ 4453.822005]  kset_register+0x5c/0xb4\n[ 4453.825820]  my_kobj_init+0x44/0x1000 [my_kset]\n... ...\n\nBecause I didn't initialize my_kset.kobj.ktype.\n\nAccording to the description in Documentation/core-api/kobject.rst:\n - A ktype is the type of object that embeds a kobject.  Every structure\n   that embeds a kobject needs a corresponding ktype.\n\nSo add sanity check to make sure kset->kobj.ktype is not NULL."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "lib/kobject.c"
                    ],
                    "versions": [
                        {
                            "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
                            "lessThan": "039ec9db2d30032eafa365f5f89b30eca5322b05",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
                            "lessThan": "964e025ceefdf75da46b0133d0c2790de451aeec",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
                            "lessThan": "5df5829158513134ddcaf2184d9286eda7b0bb18",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
                            "lessThan": "f3f6bf22a4f5ba649cf26ae4670de5c7f861bdef",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
                            "lessThan": "48aebbe801e78a8932404c122ed0e880ccedc220",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
                            "lessThan": "1a772881bc059c596d8ca587cbd2a233edce3d3b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5f81880d5204ee2388fd9a75bb850ccd526885b7",
                            "lessThan": "4d0fe8c52bb3029d83e323c961221156ab98680b",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "lib/kobject.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.295",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.257",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.197",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.133",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.55",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5.5",
                            "lessThanOrEqual": "6.5.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6",
                            "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": "4.19",
                                    "versionEndExcluding": "4.19.295"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.4.257"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.10.197"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.15.133"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.1.55"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.5.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.6"
                                }
                            ]
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                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/039ec9db2d30032eafa365f5f89b30eca5322b05"
                },
                {
                    "url": "https://git.kernel.org/stable/c/964e025ceefdf75da46b0133d0c2790de451aeec"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5df5829158513134ddcaf2184d9286eda7b0bb18"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f3f6bf22a4f5ba649cf26ae4670de5c7f861bdef"
                },
                {
                    "url": "https://git.kernel.org/stable/c/48aebbe801e78a8932404c122ed0e880ccedc220"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1a772881bc059c596d8ca587cbd2a233edce3d3b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4d0fe8c52bb3029d83e323c961221156ab98680b"
                }
            ],
            "title": "kobject: Add sanity check for kset->kobj.ktype in kset_register()",
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}