{"id":"CVE-2026-90275","state":"PUBLISHED","title":"md/raid1: don't set array_frozen in raid1_takeover()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: don't set array_frozen in raid1_takeover()\n\nraid1_takeover() sets conf->array_frozen = 1 on the newly-allocated\nr1conf and nothing ever clears it, so every I/O to the array stalls\npermanently once _wait_barrier() sees it stuck at 1.\n\nThis used to be harmless: level_store() called mddev_resume() right\nafter pers->run(), which called raid1_quiesce(mddev, 0) and cleared\narray_frozen back to 0 regardless of what raid1_takeover() set. Commit\nb39f35ebe86d (\"md: don't quiesce in mddev_suspend()\") removed that\nquiesce(mddev, 0) call, so the pre-set now sticks.\n\nsetup_conf() already zero-initializes the new r1conf via kzalloc, so\njust don't set array_frozen here.\n\nSame class of bug as commit 892da88d1cd9 (\"md/raid10: fix a\n'conf->barrier' leakage in raid10_takeover()\"), also triggered by\nb39f35ebe86d.","publishedAt":"2026-09-17T16:08:08.053Z","updatedAt":"2026-10-19T09:00:52.887Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"668d99ba47210ab6ceb18f1cf022c0accca7e3bb","versionType":"git"},{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"c57ec2749ee03cace564eec7bb37c89dc3d8d47b","versionType":"git"},{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"f9cdb5bb8efbf401e84d850828271af87e6be2dc","versionType":"git"},{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af","versionType":"git"},{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c"]}],"references":["https://git.kernel.org/stable/c/668d99ba47210ab6ceb18f1cf022c0accca7e3bb","https://git.kernel.org/stable/c/c57ec2749ee03cace564eec7bb37c89dc3d8d47b","https://git.kernel.org/stable/c/f9cdb5bb8efbf401e84d850828271af87e6be2dc","https://git.kernel.org/stable/c/b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af","https://git.kernel.org/stable/c/dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90275.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90275","state":"PUBLISHED","datePublished":"2026-09-17T16:08:08.053Z","dateUpdated":"2026-10-19T09:00:52.887Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.797Z"},"containers":{"cna":{"title":"md/raid1: don't set array_frozen in raid1_takeover()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: don't set array_frozen in raid1_takeover()\n\nraid1_takeover() sets conf->array_frozen = 1 on the newly-allocated\nr1conf and nothing ever clears it, so every I/O to the array stalls\npermanently once _wait_barrier() sees it stuck at 1.\n\nThis used to be harmless: level_store() called mddev_resume() right\nafter pers->run(), which called raid1_quiesce(mddev, 0) and cleared\narray_frozen back to 0 regardless of what raid1_takeover() set. Commit\nb39f35ebe86d (\"md: don't quiesce in mddev_suspend()\") removed that\nquiesce(mddev, 0) call, so the pre-set now sticks.\n\nsetup_conf() already zero-initializes the new r1conf via kzalloc, so\njust don't set array_frozen here.\n\nSame class of bug as commit 892da88d1cd9 (\"md/raid10: fix a\n'conf->barrier' leakage in raid10_takeover()\"), also triggered by\nb39f35ebe86d."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"668d99ba47210ab6ceb18f1cf022c0accca7e3bb","versionType":"git"},{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"c57ec2749ee03cace564eec7bb37c89dc3d8d47b","versionType":"git"},{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"f9cdb5bb8efbf401e84d850828271af87e6be2dc","versionType":"git"},{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af","versionType":"git"},{"version":"b39f35ebe86d88788d85f61e83c81c308cb76727","status":"affected","lessThan":"dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/668d99ba47210ab6ceb18f1cf022c0accca7e3bb"},{"url":"https://git.kernel.org/stable/c/c57ec2749ee03cace564eec7bb37c89dc3d8d47b"},{"url":"https://git.kernel.org/stable/c/f9cdb5bb8efbf401e84d850828271af87e6be2dc"},{"url":"https://git.kernel.org/stable/c/b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af"},{"url":"https://git.kernel.org/stable/c/dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:00:52.887Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}