CVE-2026-89708

CVE-2026-89708 is a use-after-free race condition in the Linux kernel's NFS daemon (nfsd) . During NFSv4 session teardown (DESTROY_SESSION), the session memory can be freed via kfree() while an in-flight callback rpc_task on rpciod still dereferences clp->cl_cb_session. The workqueue flush in ...