{"id":"CVE-2025-40216","revision":"7f21b53307ba4bc79bc988e3a70caeee","records":[{"revision":"7f21b53307ba4bc79bc988e3a70caeee","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-40216","aliases":[],"title":"io_uring/rsrc: don't rely on user vaddr alignment","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rsrc: don't rely on user vaddr alignment\n\nThere is no guaranteed alignment for user pointers, however the\ncalculation of an offset of the first page into a folio after coalescing\nuses some weird bit mask logic, get rid of it.","state":0,"publishedAt":"2025-12-04T14:14:14.69+00:00","modifiedAt":"2026-10-15T22:02:41.119+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                        \"io_uring/rsrc.c\",\n                        \"io_uring/rsrc.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a8edbb424b1391b077407c75d8f5d2ede77aa70d\",\n                            \"lessThan\": \"50998b0ae7d9d552e96d8b7239981cf05f65eff5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a8edbb424b1391b077407c75d8f5d2ede77aa70d\",\n                            \"lessThan\": \"f16769241594be59387b56ab525e327f54377e60\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a8edbb424b1391b077407c75d8f5d2ede77aa70d\",\n                            \"lessThan\": \"3a3c6d61577dbb23c09df3e21f6f9eda1ecd634b\",\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                        \"io_uring/rsrc.c\",\n                        \"io_uring/rsrc.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.36\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.15.5\",\n                            \"lessThanOrEqual\": \"6.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16\",\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/50998b0ae7d9d552e96d8b7239981cf05f65eff5","https://git.kernel.org/stable/c/f16769241594be59387b56ab525e327f54377e60","https://git.kernel.org/stable/c/3a3c6d61577dbb23c09df3e21f6f9eda1ecd634b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-40216","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-40216","identifiers":["CVE-2025-40216"]},"retained":false,"historicalAffected":[]}],"coverage":[]}