CVE-2025-37954 — smb: client: Avoid race in open_cached_dir with lease breaks
In the Linux kernel, the following vulnerability has been resolved: smb: client: Avoid race in open_cached_dir with lease breaks A pre-existing valid cfid returned from find_o…
Published: 2025-05-20 · CVSS: 7.5 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: smb: client: Avoid race in open_cached_dir with lease breaks A pre-existing valid cfid returned from find_or_create_cached_dir might race with a lease break, meaning open_cached_dir 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 cfid_list_lock across find_or_create_cached_dir and when the result is checked.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7