{"cve":"CVE-2026-90385","nvd":{"published":"2026-09-17T17:17:37.880","modified":"2026-10-21T13:20:53.490","status":"Received","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/0b187e14dab458d54425fc400f1e1e8d481d9bcf","https://git.kernel.org/stable/c/140234b2380ffb8ffb0cfc46fee0e822f43adef7","https://git.kernel.org/stable/c/37f11973c3eb72a5eb061082cad529bb6939c24f","https://git.kernel.org/stable/c/c02d675e81468003e4f2253b616c53729070d712","https://git.kernel.org/stable/c/f9e4364449f7ca6917f3599eb32064dba5b7b147"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-90385","score":0.00201,"percentile":0.09818,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}