{"id":"CVE-2025-71225","revision":"6423d8cad75f4d6eb46cabadf046c54f","records":[{"revision":"6423d8cad75f4d6eb46cabadf046c54f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-71225","aliases":[],"title":"md: suspend array while updating raid_disks via sysfs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd: suspend array while updating raid_disks via sysfs\n\nIn raid1_reshape(), freeze_array() is called before modifying the r1bio\nmemory pool (conf->r1bio_pool) and conf->raid_disks, and\nunfreeze_array() is called after the update is completed.\n\nHowever, freeze_array() only waits until nr_sync_pending and\n(nr_pending - nr_queued) of all buckets reaches zero. When an I/O error\noccurs, nr_queued is increased and the corresponding r1bio is queued to\neither retry_list or bio_end_io_list. As a result, freeze_array() may\nunblock before these r1bios are released.\n\nThis can lead to a situation where conf->raid_disks and the mempool have\nalready been updated while queued r1bios, allocated with the old\nraid_disks value, are later released. Consequently, free_r1bio() may\naccess memory out of bounds in put_all_bios() and release r1bios of the\nwrong size to the new mempool, potentially causing issues with the\nmempool as well.\n\nSince only normal I/O might increase nr_queued while an I/O error occurs,\nsuspending the array avoids this issue.\n\nNote: Updating raid_disks via ioctl SET_ARRAY_INFO already suspends\nthe array. Therefore, we suspend the array when updating raid_disks\nvia sysfs to avoid this issue too.","state":0,"publishedAt":"2026-02-18T14:21:46.249+00:00","modifiedAt":"2026-10-21T12:38:36.561+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/md/md.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e2d59925221cd562e07fee38ec8839f7209ae603\",\n                            \"lessThan\": \"863b9b7be824a6b2c0587532d3ece3022c6dd451\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e2d59925221cd562e07fee38ec8839f7209ae603\",\n                            \"lessThan\": \"165d1359f945b72c5f90088f60d48ff46115269e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e2d59925221cd562e07fee38ec8839f7209ae603\",\n                            \"lessThan\": \"0107b18cd8ac17eb3e54786adc05a85cdbb6ef22\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e2d59925221cd562e07fee38ec8839f7209ae603\",\n                            \"lessThan\": \"2cc583653bbe050bacd1cadcc9776d39bf449740\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1b9203bb4c658c0242afa6fdb025c71d2fc3ad76\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8ccf6cfb157419847f3cb2bfdfbcdbd39860e8e9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3.4.59\",\n                            \"lessThan\": \"3.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"3.9.7\",\n                            \"lessThan\": \"3.10\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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/md/md.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.70\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.10\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/863b9b7be824a6b2c0587532d3ece3022c6dd451","https://git.kernel.org/stable/c/165d1359f945b72c5f90088f60d48ff46115269e","https://git.kernel.org/stable/c/0107b18cd8ac17eb3e54786adc05a85cdbb6ef22","https://git.kernel.org/stable/c/2cc583653bbe050bacd1cadcc9776d39bf449740"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-71225","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-71225","identifiers":["CVE-2025-71225"]},"retained":false,"historicalAffected":[]}],"coverage":[]}