Description
In the Linux kernel, the following vulnerability has been resolved:
nvme: add missing SRCU grace period in error path
nvme_alloc_ns() error path at out_unlink_ns removes ns from the namespace head siblings list with list_del_rcu(&ns->siblings) but does not wait for SRCU readers before freeing the namespace struct. Multipath code iterates the head->list under srcu_read_lock() in nvme_find_path() and nvme_mpath_revalidate_paths(), so a concurrent reader can still hold a reference to ns when kfree(ns) runs.
The normal removal path in nvme_ns_remove() correctly calls synchronize_srcu(&ns->head->srcu) after list_del_rcu() to wait for in-progress readers. Add the same grace period in the error path.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= ed754e5deeb17f4e675c84e4b6c640cc7344e498, < 037e71058e8a59568db72015d4386f54e54dff77; >= ed754e5deeb17f4e675c84e4b6c640cc7344e498, < 7f180cef9f3421ece85c43bfdc326ce5875845bb; >= ed754e5deeb17f4e675c84e4b6c640cc7344e498, < da710ec2a70a85de73afd4f7869b234fd9ede49e; >= ed754e5deeb17f4e675c84e4b6c640cc7344e498, < 3868476cd39161f18720582df17a1b621e805b5d; >= ed754e5deeb17f4e675c84e4b6c640cc7344e498, < 0d4735418512ef825176726eaaa8bd6a35f6b46d; >= ed754e5deeb17f4e675c84e4b6c640cc7344e498, < d663944dbad81bb0e3635d7090db4713e6300858; >= ed754e5deeb17f4e675c84e4b6c640cc7344e498, < 76023560d60f10b4f808941163aa2975f1631683; >= ed754e5deeb17f4e675c84e4b6c640cc7344e498, < ef248d5de4469fb6bbaf8dbe0c4c47800080d648 |
| Linux | Linux | 4.15 |
References
- https://git.kernel.org/stable/c/037e71058e8a59568db72015d4386f54e54dff77
- https://git.kernel.org/stable/c/0d4735418512ef825176726eaaa8bd6a35f6b46d
- https://git.kernel.org/stable/c/3868476cd39161f18720582df17a1b621e805b5d
- https://git.kernel.org/stable/c/76023560d60f10b4f808941163aa2975f1631683
- https://git.kernel.org/stable/c/7f180cef9f3421ece85c43bfdc326ce5875845bb
- https://git.kernel.org/stable/c/d663944dbad81bb0e3635d7090db4713e6300858
- https://git.kernel.org/stable/c/da710ec2a70a85de73afd4f7869b234fd9ede49e
- https://git.kernel.org/stable/c/ef248d5de4469fb6bbaf8dbe0c4c47800080d648
Timeline
- Published
- Sep 16, 2026
- Last modified
- Oct 30, 2026
- NVD status
- Received