CVE-2026-74608

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> smb: client: Fix use-after-free in cifs_try_adding_channels()<br /> <br /> cifs_try_adding_channels() takes a temporary reference to an interface<br /> before dropping iface_lock. If cifs_ses_add_channel() fails, it drops<br /> that reference and then increments iface-&gt;weight_fulfilled.<br /> <br /> A concurrent interface list refresh can remove the list reference while<br /> channel creation is in progress. In that case, the failure-path<br /> kref_put() releases the last reference and frees iface. Updating<br /> weight_fulfilled afterward then accesses freed memory.<br /> <br /> Increment weight_fulfilled before dropping the temporary reference,<br /> keeping iface alive for the final access.