CVE-2026-31399 - nvdimm/bus: Fix potential use after free in asynchronous initialization

CVE-2026-31399 - nvdimm/bus: Fix potential use after free in asynchronous initialization

https://cvefeed.io/rssfeed/latest.atom / Fri, 04/03/2026 - 21:10
CVE ID :CVE-2026-31399
Published : April 3, 2026, 4:16 p.m. | 2 hours, 50 minutes ago
Description :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().
Severity: 0.0 | NA
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