CVE-2026-31399

In the Linux kernel, the following vulnerability has been resolved: nvdimm/bus: Fix potential use after free in asynchronous initialization Dingisoul with KASAN reports a use after free if device_add() fails in nd_async_device_register(). Commit b6eae0f61db2 ("libnvdimm: Hold reference on parent while scheduling async init") correctly added a reference on the parent device to be held until asynchronous initialization was complete. However, if device_add() results in an allocation failure the ref count of the device drops to 0 prior to the parent pointer being accessed. Thus resulting in use after free. The bug bot AI correctly identified the fix. Save a reference to the parent pointer to be used to drop the parent reference regardless of the outcome of device_add().

The following products are affected by CVE-2026-31399 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-31399.

URL	Resource
https://git.kernel.org/stable/c/2c638259ad750833fd46a0cf57672a618542d84c
https://git.kernel.org/stable/c/84af19855d1abdee3c9d57c0684e2868e391793c
https://git.kernel.org/stable/c/9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4d
https://git.kernel.org/stable/c/a226e5b49e5fe8c98b14f8507de670189d191348
https://git.kernel.org/stable/c/a8aec14230322ed8f1e8042b6d656c1631d41163
https://git.kernel.org/stable/c/e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20e
https://lore.kernel.org/linux-cve-announce/2026040326-CVE-2026-31399-9b84@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-31399
https://www.cve.org/CVERecord?id=CVE-2026-31399