CVE-2026-93834 Qemu-kvm: 9pfs: use-after-free race in tlcreate/twalk allows vm guest escape

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal...