CVE-2026-64394

A flaw was found in the Linux kernel's ksmbd component. This vulnerability allows a remote attacker to bypass intended access controls. By opening a file handle with limited write attributes, an attacker can use the SMB2 SETINFO SECURITY operation to rewrite the file's access control list DACL an...

kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions

A privilege escalation vulnerability was found in the Linux kernel's CIFS client implementation. This could allow a local attacker to impersonate other users, bypass authentication in SMB mount operations, and potentially gain unauthorized access to network file shares or escalate privileges...

Linux Distros Unpatched Vulnerability : CVE-2026-31476

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: do not expire session on binding failure When a multichannel session binding request fails e.g. wrong password, the error path unconditionally sets...

CVE-2025-38523

CVE-2025-38523 affects the Linux kernel CIFS/SMB client path. The issue stems from the smbd_response slab’s packet trailer not being marked as allowed for usercopy, causing kernel memory exposure checks in copy_to_iter() to trip when HARDENED_USERCOPY is enabled. The fix is in the kernel by confi...

UBUNTU-CVE-2023-32251

A vulnerability has been identified in the Linux kernel's ksmbd component kernel SMB/CIFS server. A security control designed to prevent dictionary attacks, which introduces a 5-second delay during session setup, can be bypassed through the use of asynchronous requests. This bypass negates the...

SUSE CVE-2023-4458

A flaw was found within the parsing of extended attributes in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on...

Linux kernel SMB Client Buffer Overflow DoS

The vulnerability of the cifssignalcifsdforreconnect function in the fs/smb/client/connect.c module of the SMB protocol client implementation in Linux kernel is related to the reutilization of previously freed memory. Exploiting this vulnerability could allow an attacker to cause a service failur...