CVE-2025-38151

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> RDMA/cma: Fix hang when cma_netevent_callback fails to queue_work<br /> <br /> The cited commit fixed a crash when cma_netevent_callback was called for<br /> a cma_id while work on that id from a previous call had not yet started.<br /> The work item was re-initialized in the second call, which corrupted the<br /> work item currently in the work queue.<br /> <br /> However, it left a problem when queue_work fails (because the item is<br /> still pending in the work queue from a previous call). In this case,<br /> cma_id_put (which is called in the work handler) is therefore not<br /> called. This results in a userspace process hang (zombie process).<br /> <br /> Fix this by calling cma_id_put() if queue_work fails.