{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-72018",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-09T03:40:39.900Z",
        "datePublished": "2026-08-15T05:51:45.360Z",
        "dateUpdated": "2026-08-15T05:51:45.360Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-15T05:51:45.360Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndibs: loopback: validate offset and size in move_data()\n\nThe loopback move_data() performs a memcpy into the registered DMB\nwithout checking whether offset + size exceeds the DMB length.  Unlike\nreal ISM hardware, which enforces memory region bounds natively, the\nsoftware loopback has no such protection.\n\nA peer-supplied out-of-bounds offset or oversized write would result in\nan OOB write past the allocated kernel buffer.  Add an explicit bounds\ncheck before the memcpy to reject such requests with -EINVAL."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/dibs/dibs_loopback.c"
                    ],
                    "versions": [
                        {
                            "version": "f7a22071dbf316c982fb44308874bd7ad9ac2091",
                            "lessThan": "ee188a6b264b71315a67f1b9470faad308b730d2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7a22071dbf316c982fb44308874bd7ad9ac2091",
                            "lessThan": "b2f426a9a22886071966432ede8fceafffe12b8c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7a22071dbf316c982fb44308874bd7ad9ac2091",
                            "lessThan": "94fe0ab01b480b52bd8f977edbd845ef375d69fd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7a22071dbf316c982fb44308874bd7ad9ac2091",
                            "lessThan": "78237e3c0720fcc6eb9b87e90fd70f63eeca886f",
                            "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/dibs/dibs_loopback.c"
                    ],
                    "versions": [
                        {
                            "version": "6.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2-rc3",
                            "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": "6.10",
                                    "versionEndExcluding": "6.12.97"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "7.2-rc3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ee188a6b264b71315a67f1b9470faad308b730d2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b2f426a9a22886071966432ede8fceafffe12b8c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/94fe0ab01b480b52bd8f977edbd845ef375d69fd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/78237e3c0720fcc6eb9b87e90fd70f63eeca886f"
                }
            ],
            "title": "dibs: loopback: validate offset and size in move_data()",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}