UNKNOWN NVD
CVE-2026-90156
In the Linux kernel, the following vulnerability has been resolved: ksmbd: safely discard unregistered deferred locks When vfs_lock_file() defers a lock, smb2
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: safely discard unregistered deferred locks
When vfs_lock_file() defers a lock, smb2_lock() puts its ksmbd_lock on
rollback_list before allocating and registering the asynchronous work.
If either operation fails, rollback assumes that smb_lock->conn is
initialized and dereferences NULL. The deferred file_lock also remains
linked into the VFS blocked-lock state while it is freed.
Keep the lock off rollback_list until async setup succeeds. On setup
failures, explicitly unblock and wake the deferred lock before freeing it
and its ksmbd wrapper.
References
- https://git.kernel.org/stable/c/054bcca4cd9f00719b01f7108b51a2168fb94f15
- https://git.kernel.org/stable/c/d09af9a35ff7b77a950b507133d9092aadbfeff4
This unknown severity vulnerability was published on 2026-09-17 via NVD.
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