{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53543",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-10-04T15:14:15.920Z",
        "datePublished": "2025-10-04T15:16:52.114Z",
        "dateUpdated": "2026-06-01T16:04:13.122Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-01T16:04:13.122Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check\n\nThe vdpa_nl_policy structure is used to validate the nlattr when parsing\nthe incoming nlmsg. It will ensure the attribute being described produces\na valid nlattr pointer in info->attrs before entering into each handler\nin vdpa_nl_ops.\n\nThat is to say, the missing part in vdpa_nl_policy may lead to illegal\nnlattr after parsing, which could lead to OOB read just like CVE-2023-3773.\n\nThis patch adds the missing nla_policy for vdpa max vqp attr to avoid\nsuch bugs."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/vdpa/vdpa.c"
                    ],
                    "versions": [
                        {
                            "version": "447092100c7e71aa20469a270fcee441d807ed58",
                            "lessThan": "baed19c108ac8287425b93a44985bbe9a0b1af8d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a",
                            "lessThan": "ff71709445ac033e6e250d971683110e4781c068",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a",
                            "lessThan": "ea65e8b5e6b1a34deda7564f09c90e9e80db436a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a",
                            "lessThan": "5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.15.198",
                            "lessThan": "5.15.209",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/vdpa/vdpa.c"
                    ],
                    "versions": [
                        {
                            "version": "5.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.47",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.12",
                            "lessThanOrEqual": "6.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5",
                            "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": "5.15.198",
                                    "versionEndExcluding": "5.15.209"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.16",
                                    "versionEndExcluding": "6.1.47"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.16",
                                    "versionEndExcluding": "6.4.12"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.16",
                                    "versionEndExcluding": "6.5"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/baed19c108ac8287425b93a44985bbe9a0b1af8d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ff71709445ac033e6e250d971683110e4781c068"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ea65e8b5e6b1a34deda7564f09c90e9e80db436a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f"
                }
            ],
            "title": "vdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}