CVE-2025-38321

Source
https://nvd.nist.gov/vuln/detail/CVE-2025-38321
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38321.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-38321
Downstream
Related
Published
2025-07-10T09:15:26Z
Modified
2025-08-09T19:01:28Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

smb: Log an error when closeallcached_dirs fails

Under low-memory conditions, closeallcached_dirs() can't move the dentries to a separate list to dput() them once the locks are dropped. This will result in a "Dentry still in use" error, so add an error message that makes it clear this is what happened:

[ 495.281119] CIFS: VFS: \otters.example.com\share Out of memory while dropping dentries [ 495.281595] ------------[ cut here ]------------ [ 495.281887] BUG: Dentry ffff888115531138{i=78,n=/} still in use (2) [unmount of cifs cifs] [ 495.282391] WARNING: CPU: 1 PID: 2329 at fs/dcache.c:1536 umount_check+0xc8/0xf0

Also, bail out of looping through all tcons as soon as a single allocation fails, since we're already in trouble, and kmalloc() attempts for subseqeuent tcons are likely to fail just like the first one did.

References

Affected packages