{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38397", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.012Z", "datePublished": "2025-07-25T12:53:41.566Z", "dateUpdated": "2026-05-11T21:27:11.550Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:27:11.550Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-multipath: fix suspicious RCU usage warning\n\nWhen I run the NVME over TCP test in virtme-ng, I get the following\n\"suspicious RCU usage\" warning in nvme_mpath_add_sysfs_link():\n\n'''\n[ 5.024557][ T44] nvmet: Created nvm controller 1 for subsystem nqn.2025-06.org.nvmexpress.mptcp for NQN nqn.2014-08.org.nvmexpress:uuid:f7f6b5e0-ff97-4894-98ac-c85309e0bc77.\n[ 5.027401][ T183] nvme nvme0: creating 2 I/O queues.\n[ 5.029017][ T183] nvme nvme0: mapped 2/0/0 default/read/poll queues.\n[ 5.032587][ T183] nvme nvme0: new ctrl: NQN \"nqn.2025-06.org.nvmexpress.mptcp\", addr 127.0.0.1:4420, hostnqn: nqn.2014-08.org.nvmexpress:uuid:f7f6b5e0-ff97-4894-98ac-c85309e0bc77\n[ 5.042214][ T25]\n[ 5.042440][ T25] =============================\n[ 5.042579][ T25] WARNING: suspicious RCU usage\n[ 5.042705][ T25] 6.16.0-rc3+ #23 Not tainted\n[ 5.042812][ T25] -----------------------------\n[ 5.042934][ T25] drivers/nvme/host/multipath.c:1203 RCU-list traversed in non-reader section!!\n[ 5.043111][ T25]\n[ 5.043111][ T25] other info that might help us debug this:\n[ 5.043111][ T25]\n[ 5.043341][ T25]\n[ 5.043341][ T25] rcu_scheduler_active = 2, debug_locks = 1\n[ 5.043502][ T25] 3 locks held by kworker/u9:0/25:\n[ 5.043615][ T25] #0: ffff888008730948 ((wq_completion)async){+.+.}-{0:0}, at: process_one_work+0x7ed/0x1350\n[ 5.043830][ T25] #1: ffffc900001afd40 ((work_completion)(&entry->work)){+.+.}-{0:0}, at: process_one_work+0xcf3/0x1350\n[ 5.044084][ T25] #2: ffff888013ee0020 (&head->srcu){.+.+}-{0:0}, at: nvme_mpath_add_sysfs_link.part.0+0xb4/0x3a0\n[ 5.044300][ T25]\n[ 5.044300][ T25] stack backtrace:\n[ 5.044439][ T25] CPU: 0 UID: 0 PID: 25 Comm: kworker/u9:0 Not tainted 6.16.0-rc3+ #23 PREEMPT(full)\n[ 5.044441][ T25] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\n[ 5.044442][ T25] Workqueue: async async_run_entry_fn\n[ 5.044445][ T25] Call Trace:\n[ 5.044446][ T25] \n[ 5.044449][ T25] dump_stack_lvl+0x6f/0xb0\n[ 5.044453][ T25] lockdep_rcu_suspicious.cold+0x4f/0xb1\n[ 5.044457][ T25] nvme_mpath_add_sysfs_link.part.0+0x2fb/0x3a0\n[ 5.044459][ T25] ? queue_work_on+0x90/0xf0\n[ 5.044461][ T25] ? lockdep_hardirqs_on+0x78/0x110\n[ 5.044466][ T25] nvme_mpath_set_live+0x1e9/0x4f0\n[ 5.044470][ T25] nvme_mpath_add_disk+0x240/0x2f0\n[ 5.044472][ T25] ? __pfx_nvme_mpath_add_disk+0x10/0x10\n[ 5.044475][ T25] ? add_disk_fwnode+0x361/0x580\n[ 5.044480][ T25] nvme_alloc_ns+0x81c/0x17c0\n[ 5.044483][ T25] ? kasan_quarantine_put+0x104/0x240\n[ 5.044487][ T25] ? __pfx_nvme_alloc_ns+0x10/0x10\n[ 5.044495][ T25] ? __pfx_nvme_find_get_ns+0x10/0x10\n[ 5.044496][ T25] ? rcu_read_lock_any_held+0x45/0xa0\n[ 5.044498][ T25] ? validate_chain+0x232/0x4f0\n[ 5.044503][ T25] nvme_scan_ns+0x4c8/0x810\n[ 5.044506][ T25] ? __pfx_nvme_scan_ns+0x10/0x10\n[ 5.044508][ T25] ? find_held_lock+0x2b/0x80\n[ 5.044512][ T25] ? ktime_get+0x16d/0x220\n[ 5.044517][ T25] ? kvm_clock_get_cycles+0x18/0x30\n[ 5.044520][ T25] ? __pfx_nvme_scan_ns_async+0x10/0x10\n[ 5.044522][ T25] async_run_entry_fn+0x97/0x560\n[ 5.044523][ T25] ? rcu_is_watching+0x12/0xc0\n[ 5.044526][ T25] process_one_work+0xd3c/0x1350\n[ 5.044532][ T25] ? __pfx_process_one_work+0x10/0x10\n[ 5.044536][ T25] ? assign_work+0x16c/0x240\n[ 5.044539][ T25] worker_thread+0x4da/0xd50\n[ 5.044545][ T25] ? __pfx_worker_thread+0x10/0x10\n[ 5.044546][ T25] kthread+0x356/0x5c0\n[ 5.044548][ T25] ? __pfx_kthread+0x10/0x10\n[ 5.044549][ T25] ? ret_from_fork+0x1b/0x2e0\n[ 5.044552][ T25] ? __lock_release.isra.0+0x5d/0x180\n[ 5.044553][ T25] ? ret_from_fork+0x1b/0x2e0\n[ 5.044555][ T25] ? rcu_is_watching+0x12/0xc0\n[ 5.044557][ T25] ? __pfx_kthread+0x10/0x10\n[ 5.04\n---truncated---" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/nvme/host/multipath.c" ], "versions": [ { "version": "4dbd2b2ebe4cc5f101881e2c091a70ccd38db7ee", "lessThan": "a432383e6cd86d9fda00a6073ed35c1067a836d6", "status": "affected", "versionType": "git" }, { "version": "4dbd2b2ebe4cc5f101881e2c091a70ccd38db7ee", "lessThan": "d6811074203b13f715ce2480ac64c5b1c773f2a5", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/nvme/host/multipath.c" ], "versions": [ { "version": "6.15", "status": "affected" }, { "version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.6", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "6.15.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "6.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a432383e6cd86d9fda00a6073ed35c1067a836d6" }, { "url": "https://git.kernel.org/stable/c/d6811074203b13f715ce2480ac64c5b1c773f2a5" } ], "title": "nvme-multipath: fix suspicious RCU usage warning", "x_generator": { "engine": "bippy-1.2.0" } } } }