SUSE CVE-2026-31711

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix activenumconn leak on transport allocation failure Commit 77ffbcac4e56 "smb: server: fix leak of activenumconn in ksmbdtcpnewconnection" addressed the kthreadrun failure path. The earlier alloctransport == NULL...

CVE-2025-21844 smb: client: Add check for next_buffer in receive_encrypted_standard()

In the Linux kernel, the following vulnerability has been resolved: smb: client: Add check for nextbuffer in receiveencryptedstandard Add check for the return value of cifsbufget and cifssmallbufget in receiveencryptedstandard to prevent null pointer dereference...

CVE-2025-21844

CVE-2025-21844 affects the Linux kernel SMB client path. The vulnerability could allow a NULL pointer dereference in the receive_encrypted_standard() path due to missing checks, which could crash the kernel. The fix adds checks for the next_buffer in receive_encrypted_standard() and validates the...

CVE-2025-21725

CVE-2025-21725 concerns the Linux kernel CIFS/SMB client. The issue arises when NETWORK_INTERFACE_INFO::LinkSpeed is not guaranteed to be set by the server, potentially causing an oops (divide error) in the cifs client path. The provided connected documents specify the fix as: fix by setting cifs...

CVE-2024-56729

In the Linux kernel, the following vulnerability has been resolved: smb: Initialize cfid-tcon before performing network ops Avoid leaking a tcon ref when a lease break races with opening the cached directory. Processing the leak break might take a reference to the tcon in cacheddirleasebreak and...

AZL-31730 CVE-2023-5345 affecting package hyperv-daemons for versions less than 5.15.135.1-1

A use-after-free vulnerability in the Linux kernel's fs/smb/client component can be exploited to achieve local privilege escalation. In case of an error in smb3fscontextparseparam, ctx-password was freed but the field was not set to NULL which could lead to double free. We recommend upgrading pas...

CVE-2023-32258 Session race condition remote code execution vulnerability

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2LOGOFF and SMB2CLOSE commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this...