CVE-2025-37954
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Linux Kernel
PublishedMay 20, 2025
First seenMay 20, 2025
How to fix
Update
- linux linux_kernel6.6.91, 6.12.29, 6.14.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 6.6.91, 6.7 ≤ v < 6.12.29, 6.13 ≤ v < 6.14.7, 6.15 | 6.6.91, 6.12.29, 6.14.7 |
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