{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-21903",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-12-29T08:45:45.785Z",
        "datePublished": "2025-04-01T15:40:45.262Z",
        "dateUpdated": "2026-05-11T21:08:45.411Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:08:45.411Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmctp i3c: handle NULL header address\n\ndaddr can be NULL if there is no neighbour table entry present,\nin that case the tx packet should be dropped.\n\nsaddr will usually be set by MCTP core, but check for NULL in case a\npacket is transmitted by a different protocol."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/mctp/mctp-i3c.c"
                    ],
                    "versions": [
                        {
                            "version": "c8755b29b58ec65be17bcb8c40763d2dcb1f1db5",
                            "lessThan": "d8be54c35aee29d96d1350b1b6f153be4da37c07",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8755b29b58ec65be17bcb8c40763d2dcb1f1db5",
                            "lessThan": "740bf9c9b715cc327d34b1e2d4ee79fcd4c47a56",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8755b29b58ec65be17bcb8c40763d2dcb1f1db5",
                            "lessThan": "cf7ee25e70c6edfac4553d6b671e8b19db1d9573",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/mctp/mctp-i3c.c"
                    ],
                    "versions": [
                        {
                            "version": "6.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.19",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.13.7",
                            "lessThanOrEqual": "6.13.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.14",
                            "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": "6.12.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.13.7"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.14"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d8be54c35aee29d96d1350b1b6f153be4da37c07"
                },
                {
                    "url": "https://git.kernel.org/stable/c/740bf9c9b715cc327d34b1e2d4ee79fcd4c47a56"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cf7ee25e70c6edfac4553d6b671e8b19db1d9573"
                }
            ],
            "title": "mctp i3c: handle NULL header address",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}