CVE-2026-98559

In the Linux kernel, the following vulnerability has been resolved:

net/smc: fix UAF on lgr list traversal in smcr port err()

smcr port err() traverses smc lgr list.list without holding smc lgr list.lock, allowing a concurrent smc lgr terminate sched() to free an lgr while it is still being dereferenced.

Hold smc lgr list.lock across the traversal. Update smc ib gid check() to call smcr port err() after releasing the lock.