CVE-2025-21673

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double free of TCPServerInfo::hostname When shutting down the server in cifsputtcpsession, cifsd thread might be reconnecting to multiple DFS targets before it realizes it should exit the loop, so @server-hostnam...

CVE-2025-21673

CVE-2025-21673 affects the Linux kernel SMB CIFS client. The issue is a double free of TCP_Server_Info::hostname in cifs_put_tcp_session() when a cifsd thread reconnects to multiple DFS targets during shutdown. This can allow a memory release/use-after-free scenario leading to a crash (reported a...

Unable to create an SR from a CIFS share containing DFS Targets

Unable to create an SR from a CIFS share containing DFS Targets. When trying to create the SR XenCenter gives an error: Unable to mount the directory specified in device configuration request The following errors can be seen in the logs: daemon.log Apr 6 10:35:04 dubvdodxa65-5 cifs.upcall: unable...