UBUNTU-CVE-2026-97613: Medium severity ubuntu/linux-hwe-edge vulnerability

In the Linux kernel, the following vulnerability has been resolved: net: mana: Reserve extra CQ slot for the fence completion CQE The RX completion queue is sized to hold exactly one CQE per posted RX WQE. MANAFENCERQ makes hardware post an additional CQERXOBJECTFENCE after the packet CQEs. The current sizing reserves no extra slot for it and in rare cases, CQ has no guaranteed slot for the fence CQE when it is full of packet CQEs. This can lead to dropping the fence completion while the driver waits holding RTNL lock throughout the timeout duration. Reserve one extra CQE slot for CQERXOBJECTFENCE. managdallocmemory() requires queuesize to be a power-of-two and at least MANAPAGESIZE; the reservation pushes cqsize past a power-of-two, so round up the CQ size in manacreaterxq().