CVE-2026-98172

Summary

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

smb: client: fix smbd_connection leak on cifs_get_tcp_session() error

When an RDMA connection is successfully established via smbd_get_connection() but cifs_get_tcp_session() later fails (e.g. kthread_create() returns an error), the error path frees tcp_ses without first destroying the smbd_connection.

Fix this by calling smbd_destroy() in the out_err cleanup path before kfree(tcp_ses). smbd_destroy() safely handles the case where smbd_conn is NULL, so it can be called unconditionally.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2f8946464b11822169b9f10c7cf58a2440b51d54 < 3164402c58940ff58a3cecdb026405f07b0253afaffected
LinuxLinux2f8946464b11822169b9f10c7cf58a2440b51d54 < e3344bb0ff5ec8a276f42239e140f5442841ef23affected
LinuxLinux2f8946464b11822169b9f10c7cf58a2440b51d54 < 5c908e49d349266dff0c86dda6a05df0ff19b824affected
LinuxLinux2f8946464b11822169b9f10c7cf58a2440b51d54 < 928edc4bd6a617caabeb575fc13c254d9df623c4affected
LinuxLinux2f8946464b11822169b9f10c7cf58a2440b51d54 < b26a3fcf2f1c2cadba400290b639f01395db8fc8affected
LinuxLinux2f8946464b11822169b9f10c7cf58a2440b51d54 < e75c96157d45e498970158c8f7373d90102e33b9affected
LinuxLinux4.16affected
LinuxLinux0 < 4.16unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.112 <= 6.12.*unaffected
LinuxLinux6.18.54 <= 6.18.*unaffected
LinuxLinux7.2.8 <= 7.2.*unaffected
LinuxLinux7.3-rc4 <= *unaffected

Weaknesses

References