CVE-2023-54250

In the Linux kernel, the following vulnerability has been resolved: ksmbd: avoid out of bounds access in decodepreauthctxt Confirm that the accessed pnegctxt-HashAlgorithms address sits within the SMB request boundary; deassemblenegcontexts only checks that the eight byte smb2negcontext header +...

PT-2025-51659

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel's ksmbd module where a socket is leaked when the per-IP connection limit is exceeded during connection attempts. Specifically, when ksmbd kthread fn...

ksmbd: prevent connection release during oplock break notification

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Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ksmbd: A null pointer dereference issue in destroyprevioussession has been fixed. If the -PreviousSessionId is set during the Kerberos session setup phase, a null pointer dereference error may occur. Since sess-user is not set ye...

CVE-2025-40039

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix race condition in RPC handle list access The 'sess-rpchandlelist' XArray manages RPC handles within a ksmbd session. Access to this list is intended to be protected by 'sess-rpclock' an rwsemaphore. However, the lockin...

Exploit for CVE-2025-38561

CVE-2025-38561 ksmbd: Preauh...

Exploit for CVE-2025-38501

Overview Proof-of-Concept exploit for KSMBDrain CVE-2025-3850...

Linux Distros Unpatched Vulnerability : CVE-2025-37952

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: Fix UAF in closefiletableids A use-after-free is possible if one thread destroys the file via ksmbdclosefd while another thread holds a reference to it...

Linux Distros Unpatched Vulnerability : CVE-2022-47938

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2misc.c has an out-of-bounds read and OOPS for SMB2TREECONNECT...

CVE-2025-38561

CVE-2025-38561 concerns the ksmbd component of the Linux kernel. A race condition on Preauh_HashValue may occur when a client sends multiple session setup requests to ksmbd, due to how sess->Preauh_HashValue was previously freed during session setup. The fix moves freeing of sess->Preauh_Ha...

CVE-2023-4515

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate command request size In commit 2b9b8f3b68ed "ksmbd: validate command payload size", except for SMB2OPLOCKBREAKHE command, the request size of other commands is not checked, it's not expected. Fix it by add check f...

CVE-2023-4130 ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix wrong next length validation of ea buffer in smb2setea There are multiple smb2eainfo buffers in FILEFULLEAINFORMATION request from client. ksmbd find next smb2eainfo using -NextEntryOffset of current smb2eainfo. ksmbd...

CVE-2025-38501

In the Linux kernel, the following vulnerability has been resolved: ksmbd: limit repeated connections from clients with the same IP Repeated connections from clients with the same IP address may exhaust the max connections and prevent other normal client connections. This patch limit repeated...

PT-2025-33600

Name of the Vulnerable Software and Affected Versions Linux Kernel affected versions not specified Description The Linux kernel contains a flaw within the ksmbd component related to incorrect length validation of extended attribute ea buffers during SMB2 file operation handling. Specifically, the...

Linux Distros Unpatched Vulnerability : CVE-2023-1194

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An out-of-bounds OOB memory read flaw was found in parseleasestate in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When ...

Linux Distros Unpatched Vulnerability : CVE-2025-21944

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix bug on trap in smb2lock If lock count is greater than 1, flags could be old value. It should be checked with flags of smblock, not flags. It will cau...

Linux Distros Unpatched Vulnerability : CVE-2025-22038

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: validate zero numsubauth before subauth is accessed Access psid-subauthpsid-numsubauth - 1 without checking if numsubauth is non-zero leads to an...

Linux Distros Unpatched Vulnerability : CVE-2025-21946

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix out-of-bounds in parsesecdesc If osidoffset, gsidoffset and dacloffset could be greater than smbntsd struct size. If it is smaller, It could cause...

ksmbd: add bounds check for durable handle context

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The vulnerability of the smb20_oplock_break_ack() function in the Linux file system support module fs/ksmbd/smb2pdu.c allows a attacker to cause a service failure.

The vulnerability of the smb20oplockbreakack function in the fs/ksmbd/smb2pdu.c module of the Linux file system support module is related to the reutilization of previously released memory. Exploiting this vulnerability can allow an attacker to cause a service failure...