{"id":"CVE-2026-97617","revision":"548aa3448006480697a5c85cfca55fef","records":[{"revision":"548aa3448006480697a5c85cfca55fef","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97617","aliases":[],"title":"ring-buffer: Check resize_disabled before publishing the new subbuf order","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Check resize_disabled before publishing the new subbuf order\n\nring_buffer_subbuf_order_set() stores the new order and only then walks\nthe CPUs, returning -EBUSY if any of them has resizing disabled. A user\nmapped buffer has resizing disabled, and __rb_map_vma() reads\nbuffer->subbuf_order without buffer->mutex, so an mmap of an already\nmapped CPU racing the failing order change sizes the mapping with the\nnew order and inserts pages past the sub-buffer into the VMA.\n\nCheck the CPUs before storing the new order.","state":0,"publishedAt":"2026-09-25T10:22:24.436+00:00","modifiedAt":"2026-10-19T09:10:20.808+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                        \"kernel/trace/ring_buffer.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"117c39200d9d760cbd5944bb89efb7b9c51965aa\",\n                            \"lessThan\": \"f2099644e1b2a2c0805c5240d63ab0522d9d0174\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"117c39200d9d760cbd5944bb89efb7b9c51965aa\",\n                            \"lessThan\": \"9fd4ea952e6ac12a63c3fe89f08ad02771aa2c06\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"117c39200d9d760cbd5944bb89efb7b9c51965aa\",\n                            \"lessThan\": \"32bf47db9237c5b8b6f6aaa5356bb4c79d241f76\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"117c39200d9d760cbd5944bb89efb7b9c51965aa\",\n                            \"lessThan\": \"d860c67c051685abb0460b593b193f0f45f4fa92\",\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                        \"kernel/trace/ring_buffer.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\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/f2099644e1b2a2c0805c5240d63ab0522d9d0174","https://git.kernel.org/stable/c/9fd4ea952e6ac12a63c3fe89f08ad02771aa2c06","https://git.kernel.org/stable/c/32bf47db9237c5b8b6f6aaa5356bb4c79d241f76","https://git.kernel.org/stable/c/d860c67c051685abb0460b593b193f0f45f4fa92"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97617","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97617","identifiers":["CVE-2026-97617"]},"retained":false,"historicalAffected":[]}],"coverage":[]}