CVE-2025-37952High· 8.8▾ TwilightIn 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Nov 3.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.4%
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.
Linux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 21100812657965dd95bc305f6076f62012f34cf4Linux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < fec1f9e9a650e8e7011330a085c77e7bf2a08ea9Linux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 9e9841e232b51171ddf3bc4ee517d5d28dc8cad6Linux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 16727e442568a46d9cca69fe2595896de86e120dLinux >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 36991c1ccde2d5a521577c448ffe07fcccfe104dLinux 5.15Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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