{"id":"CVE-2026-72018","revision":"6a26b65004704a839458a3bc064e9aa7","records":[{"revision":"6a26b65004704a839458a3bc064e9aa7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72018","aliases":[],"title":"dibs: loopback: validate offset and size in move_data()","description":"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.","state":0,"publishedAt":"2026-08-15T05:51:45.36+00:00","modifiedAt":"2026-10-16T18:42:39.883+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/dibs/dibs_loopback.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"f7a22071dbf316c982fb44308874bd7ad9ac2091\",\n                            \"lessThan\": \"ee188a6b264b71315a67f1b9470faad308b730d2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f7a22071dbf316c982fb44308874bd7ad9ac2091\",\n                            \"lessThan\": \"b2f426a9a22886071966432ede8fceafffe12b8c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f7a22071dbf316c982fb44308874bd7ad9ac2091\",\n                            \"lessThan\": \"94fe0ab01b480b52bd8f977edbd845ef375d69fd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f7a22071dbf316c982fb44308874bd7ad9ac2091\",\n                            \"lessThan\": \"78237e3c0720fcc6eb9b87e90fd70f63eeca886f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/dibs/dibs_loopback.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.97\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/ee188a6b264b71315a67f1b9470faad308b730d2","https://git.kernel.org/stable/c/b2f426a9a22886071966432ede8fceafffe12b8c","https://git.kernel.org/stable/c/94fe0ab01b480b52bd8f977edbd845ef375d69fd","https://git.kernel.org/stable/c/78237e3c0720fcc6eb9b87e90fd70f63eeca886f"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72018","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72018","identifiers":["CVE-2026-72018"]},"retained":false,"historicalAffected":[]}],"coverage":[]}