UBUNTU-CVE-2026-98483: Use After Free

In the Linux kernel, the following vulnerability has been resolved: nfc: fix use-after-free in nfcgetlocalgeneralbytes Commit 6709d4b7bc2e ("net: nfc: Fix use-after-free caused by nfcllcpfindlocal") attempted to fix a use-after-free (UAF) issue by invoking nfcllcplocalput(local) after accessing local->gb. However, if the reference count drops to zero, local is freed immediately, leading to a use-after-free when callers access the returned pointer. Alternative approaches using dynamic allocation (e.g. kmemdup) introduced memory leaks because callers consistently treat the returned pointer as borrowed memory. Fix this properly by refactoring nfcllcpgeneralbytes() and nfcgetlocalgeneralbytes() to accept a caller-provided output buffer (outgb) and its maximum length (gbmaxlen). The general bytes are safely copied into outgb before calling nfcllcplocalput(local), ensuring safe lifetime management without ownership transfer complications. Update all callers across drivers (microread, pn533, pn544, st21nfca, digitaldep, and nci) to provide their own destination buffers and pass them to nfcgetlocalgeneralbytes().