{"id":"CVE-2026-90385","state":"PUBLISHED","title":"md/raid1: create serial pool adding rdev to array with serialize_policy=1","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: create serial pool adding rdev to array with serialize_policy=1\n\nThe following bug has been observed with kernel 7.1.3 after adding a new\nrdev to an existing RAID1 array with serialize_policy enabled:\n\n  Oops: 0002 [#1]\n  CPU: 0 UID: 0 PID: 19639 Comm: ext4lazyinit Not tainted 7.1.3-1-default\n  RIP: _raw_spin_lock_irqsave+0x27/0x50\n  CR2: 0000000000004960\n  Call Trace:\n   wait_for_serialization+0xb9/0x260 [raid1]\n   raid1_make_request+0x762/0xaff [raid1]\n   md_handle_request+0x1c9/0x2e0 [md_mod]\n\nThe raid1.c code calls wait_for_serialization() if the MD_SERIALIZE_POLICY\nis set, and wait_for_serialization assumes that rdev->serial is\ninitialized. Normally this will be the case for arrays that have\nthe serialize_policy sysfs attribute set to 1.\n\nBut when a new rdev is added to an existing array in bind_rdev_to_array(),\nthe condition at mddev_create_serial_pool() causes creation of rdev->serial\nto be skipped. Fix it.","publishedAt":"2026-09-17T16:09:21.198Z","updatedAt":"2026-10-30T12:35:27.082Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"6ea458171bed2b706dc7bcd80b15356c0e9ed718","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"0b187e14dab458d54425fc400f1e1e8d481d9bcf","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"f9e4364449f7ca6917f3599eb32064dba5b7b147","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"37f11973c3eb72a5eb061082cad529bb6939c24f","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"c02d675e81468003e4f2253b616c53729070d712","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"140234b2380ffb8ffb0cfc46fee0e822f43adef7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","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/md.c"]}],"references":["https://git.kernel.org/stable/c/6ea458171bed2b706dc7bcd80b15356c0e9ed718","https://git.kernel.org/stable/c/0b187e14dab458d54425fc400f1e1e8d481d9bcf","https://git.kernel.org/stable/c/f9e4364449f7ca6917f3599eb32064dba5b7b147","https://git.kernel.org/stable/c/37f11973c3eb72a5eb061082cad529bb6939c24f","https://git.kernel.org/stable/c/c02d675e81468003e4f2253b616c53729070d712","https://git.kernel.org/stable/c/140234b2380ffb8ffb0cfc46fee0e822f43adef7"],"weaknesses":[],"ingestedAt":"2026-10-30T12:54:04.478Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90385.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90385","state":"PUBLISHED","datePublished":"2026-09-17T16:09:21.198Z","dateUpdated":"2026-10-30T12:35:27.082Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.809Z"},"containers":{"cna":{"title":"md/raid1: create serial pool adding rdev to array with serialize_policy=1","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: create serial pool adding rdev to array with serialize_policy=1\n\nThe following bug has been observed with kernel 7.1.3 after adding a new\nrdev to an existing RAID1 array with serialize_policy enabled:\n\n  Oops: 0002 [#1]\n  CPU: 0 UID: 0 PID: 19639 Comm: ext4lazyinit Not tainted 7.1.3-1-default\n  RIP: _raw_spin_lock_irqsave+0x27/0x50\n  CR2: 0000000000004960\n  Call Trace:\n   wait_for_serialization+0xb9/0x260 [raid1]\n   raid1_make_request+0x762/0xaff [raid1]\n   md_handle_request+0x1c9/0x2e0 [md_mod]\n\nThe raid1.c code calls wait_for_serialization() if the MD_SERIALIZE_POLICY\nis set, and wait_for_serialization assumes that rdev->serial is\ninitialized. Normally this will be the case for arrays that have\nthe serialize_policy sysfs attribute set to 1.\n\nBut when a new rdev is added to an existing array in bind_rdev_to_array(),\nthe condition at mddev_create_serial_pool() causes creation of rdev->serial\nto be skipped. Fix it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"6ea458171bed2b706dc7bcd80b15356c0e9ed718","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"0b187e14dab458d54425fc400f1e1e8d481d9bcf","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"f9e4364449f7ca6917f3599eb32064dba5b7b147","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"37f11973c3eb72a5eb061082cad529bb6939c24f","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"c02d675e81468003e4f2253b616c53729070d712","versionType":"git"},{"version":"69b00b5bb23552d43e8bbed73ef6624604bb94a2","status":"affected","lessThan":"140234b2380ffb8ffb0cfc46fee0e822f43adef7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","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/md.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6ea458171bed2b706dc7bcd80b15356c0e9ed718"},{"url":"https://git.kernel.org/stable/c/0b187e14dab458d54425fc400f1e1e8d481d9bcf"},{"url":"https://git.kernel.org/stable/c/f9e4364449f7ca6917f3599eb32064dba5b7b147"},{"url":"https://git.kernel.org/stable/c/37f11973c3eb72a5eb061082cad529bb6939c24f"},{"url":"https://git.kernel.org/stable/c/c02d675e81468003e4f2253b616c53729070d712"},{"url":"https://git.kernel.org/stable/c/140234b2380ffb8ffb0cfc46fee0e822f43adef7"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:35:27.082Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}