{"id":"CVE-2026-89972","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-89972","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: add missing SRCU grace period in error path\n\nnvme_alloc_ns() error path at out_unlink_ns removes ns from the\nnamespace…","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: add missing SRCU grace period in error path\n\nnvme_alloc_ns() error path at out_unlink_ns removes ns from the\nnamespace head siblings list with list_del_rcu(&ns->siblings) but\ndoes not wait for SRCU readers before freeing the namespace struct.\nMultipath code iterates the head->list under srcu_read_lock() in\nnvme_find_path() and nvme_mpath_revalidate_paths(), so a concurrent\nreader can still hold a reference to ns when kfree(ns) runs.\n\nThe normal removal path in nvme_ns_remove() correctly calls\nsynchronize_srcu(&ns->head->srcu) after list_del_rcu() to wait for\nin-progress readers. Add the same grace period in the error path.","published":"2026-09-16T10:32:51.701Z","modified":"2026-09-16T10:32:51.701Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/d663944dbad81bb0e3635d7090db4713e6300858"},{"type":"WEB","url":"https://git.kernel.org/stable/c/76023560d60f10b4f808941163aa2975f1631683"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef248d5de4469fb6bbaf8dbe0c4c47800080d648"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-16T10:32:51.701Z"}}