EUVD-2026-25431

In the Linux kernel, the following vulnerability has been resolved: smb: server: make use of smbdirectsocket.recvio.credits.available The logic off managing recv credits by counting posted recvio and granted credits is racy. That's because the peer might already consumed a credit, but between...

CVE-2026-31537

In the Linux kernel SMB server, CVE-2026-31537 arises from improper handling of smbdirect_socket.send_io.bcredits, which can corrupt the stream of reassembled data transfer messages when triggering an immediate (empty) send. The fix introduces a single batch credit per connection; code obtaining ...

CVE-2026-31535 smb: client: make use of smbdirect_socket.recv_io.credits.available

In the Linux kernel, the following vulnerability has been resolved: smb: client: make use of smbdirectsocket.recvio.credits.available The logic off managing recv credits by counting posted recvio and granted credits is racy. That's because the peer might already consumed a credit, but between...

EUVD-2026-25428

In the Linux kernel, the following vulnerability has been resolved: smb: client: make use of smbdirectsocket.recvio.credits.available The logic off managing recv credits by counting posted recvio and granted credits is racy. That's because the peer might already consumed a credit, but between...

EUVD-2026-25426

In the Linux kernel, the following vulnerability has been resolved: smb: client: let senddone handle a completion without IBSENDSIGNALED With smbdirectsendbatch processing we likely have requests without IBSENDSIGNALED, which will be destroyed in the final request that has IBSENDSIGNALED set. If...

PT-2026-34887

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the SMB client logic used for managing receive credits. The process of counting posted recv io and granted credits is flawed because a peer may consume a credi...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from repeatedly calling smbdirectfreesendmsg after smbdirectFlushsendlist, resulting in double releases of...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011288)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011288 advisory. In the Linux kernel, the following vulnerability has been resolved: cifs: Fix lost destroy smbd connection when MR allocate failed If the MR allocate failed, the smb...

The vulnerability of the recv_done() function in the fs/smb/client/smbdirect.c module of the SMB client kernel of the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the recvdone function in the fs/smb/client/smbdirect.c module, which is part of the SMB client support in Linux kernel, is related to insufficient validation of input data. Exploiting this vulnerability allows a remote attacker to compromise the confidentiality, integrity, an...

PT-2026-37525

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A signedness bug exists in the smb direct prepare negotiation function. The function casts unsigned u32 values from sp-max recv size and req-preferred send size to signed integers before...

PT-2026-34891

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the smbdirect component of the Linux kernel regarding the management of receive credits. The logic used to count posted recv io and granted credits is flawed...

SUSE CVE-2023-54260

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix lost destroy smbd connection when MR allocate failed If the MR allocate failed, the smb direct connection info is NULL, then smbddestroy will directly return, then the connection info will be leaked. Let's set the smb...

UBUNTU-CVE-2023-54260

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix lost destroy smbd connection when MR allocate failed If the MR allocate failed, the smb direct connection info is NULL, then smbddestroy will directly return, then the connection info will be leaked. Let's set the smb...

CVE-2023-54260

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix lost destroy smbd connection when MR allocate failed If the MR allocate failed, the smb direct connection info is NULL, then smbddestroy will directly return, then the connection info will be leaked. Let's set the smb...

CVE-2023-54260

CVE-2023-54260 — Linux kernel (CIFS): The vulnerability occurs when MR allocation fails during CIFS SMB direct connection handling; if the MR allocate fails and the smb direct connection info is NULL, smbd_destroy() returns early and leaks the connection info. The fix updates the shutdown path by...

ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer

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AZL-68132 CVE-2025-39929 affecting package kernel for versions less than 6.6.112.1-1

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix smbdirectrecvio leak in smbdnegotiate error path During tests of another unrelated patch I was able to trigger this error: Objects remaining on kmemcacheshutdown...

CVE-2025-39943 ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate dataoffset and datalength field of smbdirectdatatransfer If dataoffset and datalength of smbdirectdatatransfer struct are invalid, out of bounds issue could happen. This patch validate dataoffset and...

CVE-2025-39943 ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate dataoffset and datalength field of smbdirectdatatransfer If dataoffset and datalength of smbdirectdatatransfer struct are invalid, out of bounds issue could happen. This patch validate dataoffset and...

CVE-2025-39943

The CVE-2025-39943 issue affects the Linux kernel’s ksmbd direct SMB transport (smb_direct_data_transfer) where invalid data_offset or data_length in smb_direct_data_transfer could trigger an out-of-bounds condition. The root cause is improper validation in the recv_done path, which can lead to a...