In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix UAF in __close_file_table_ids A use-after-free is possible if one thread destroys the file via __ksmbd_close_fd while another thread holds a reference to it. The existing checks on fp->refcount are not sufficient to prevent this. The fix takes ft->lock around the section which removes the file from the file table. This prevents two threads acquiring the same file pointer via __close_file_table_ids, as well as the other functions which retrieve a file from the IDR and which already use this same lock.
CVE-2025-37952
CVSS base score
8.8 (v3.1)
Severity
HIGH
Attack vector
Network
Weakness
CWE-416
Last modified
October 30, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
linux linux kernel
References
- git.kernel.org Patch
- git.kernel.org
- git.kernel.org Patch
- git.kernel.org Patch
- git.kernel.org Patch