EUVD-2026-81802

In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix deadlock during unregister Unregistering an s390dbf debug area while one of the associated debugfs files is being written to can cause a deadlock: $ echo .../vmur/level $ rmmod vmur...

CVE-2026-90209

CVE-2026-90209 affects the Linux kernel s390dbf debug subsystem . A deadlock occurs when a debug area is unregistered (e.g., via rmmod) while an associated debugfs file is simultaneously being written to. Both the unregister path (debug_unregister() → debugfs_remove() → waiting for debugfs_file_p...