In the Linux kernel, the following vulnerability has been resolved: smb: client: Avoid race in opencacheddir with lease breaks A pre-existing valid cfid returned from findorcreatecacheddir might race with a lease break, meaning opencacheddir doesn't consider it valid, and thinks it's newly-constructed. This leaks a dentry reference if the allocation occurs before the queued lease break work runs. Avoid the race by extending holding the cfidlistlock across findorcreatecacheddir and when the result is checked.
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