EUVD-2026-18780
GHSA-j3fg-h3r6-7945
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3Description
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().
Analysis
Use-after-free in Linux kernel nvdimm/bus asynchronous device registration allows local denial of service when device_add() fails during nd_async_device_register(). The vulnerability occurs because a device reference is dropped before the parent pointer is safely accessed, causing a kernel crash or memory corruption. …
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