CVE-2026-64389

A flaw was found in the Linux kernel's ksmbd component. A remote attacker could exploit a vulnerability in the NTLMv2 authentication process to modify a session key even when authentication fails. This bypasses security checks and could potentially lead to unauthorized access or session hijacking...

SUSE CVE-2026-64141

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in compareguidkey sessionfdcheck walks the per-inode moplist during durable-handle session teardown and sets op-conn = NULL for every opinfo whose conn matched the closing session's connection...

CVE-2026-64142

A flaw was found in the Linux kernel's ksmbd component. Two race conditions in the ksmbddurablescavenger function can lead to list corruption and a Use-After-Free UAF vulnerability. A remote attacker could potentially exploit these race conditions during durable handle scavenging and lookup...

CVE-2026-64016

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix durable reconnect error path file lifetime After a durable reconnect succeeds, ksmbdreopendurablefd republishes the same ksmbdfile into the session volatile-id table. If smb2open then takes a later error path, cleanup...

CVE-2026-31478

A flaw was found in ksmbd within the Linux kernel. This vulnerability occurs due to an incorrect calculation of the response buffer length in the smb2calcmaxoutbuflen function. The function used a hardcoded value instead of the proper offset, which could lead to issues in how response buffers are...

Linux Distros Unpatched Vulnerability : CVE-2023-32255

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in the Linux kernel's ksmbd component. A memory leak can occur if a client sends a session setup request with an unknown NTLMSSP message type,...

CVE-2025-38561

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix PreauhHashValue race condition If client send multiple session setup requests to ksmbd, PreauhHashValue race condition could happen. There is no need to free sess-PreauhHashValue at session setup phase. It can be freed...

Linux Distros Unpatched Vulnerability : CVE-2021-45100

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The ksmbd server through 3.4.2, as used in the Linux kernel through 5.15.8, sometimes communicates in cleartext even though encryption has been enabled. This...

Linux Distros Unpatched Vulnerability : CVE-2022-47941

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/smb2pdu.c omits a kfree call in certain smb2handlenegotiate error...

DEBIAN-CVE-2023-32253

A flaw was found in the Linux kernel's ksmbd component. A deadlock is triggered by sending multiple concurrent session setup requests, possibly leading to a denial of service...

UBUNTU-CVE-2023-32253

A flaw was found in the Linux kernel's ksmbd component. A deadlock is triggered by sending multiple concurrent session setup requests, possibly leading to a denial of service...

DEBIAN-CVE-2023-32256

A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue...

UBUNTU-CVE-2023-32256

A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue...

DEBIAN-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...

CVE-2023-32251 Kernel: ksmbd brute force delay bypass via asynchronous requests

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...

CVE-2025-38092 ksmbd: use list_first_entry_or_null for opinfo_get_list()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: use listfirstentryornull for opinfogetlist The listfirstentry macro never returns NULL. If the list is empty then it returns an invalid pointer. Use listfirstentryornull to check if the list is empty...

CVE-2025-22041 ksmbd: fix use-after-free in ksmbd_sessions_deregister()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbdsessionsderegister In multichannel mode, UAF issue can occur in sessionderegister when the second channel sets up a session through the connection of the first channel. session that is freed...

CVE-2025-22038 ksmbd: validate zero num_subauth before sub_auth is accessed

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate zero numsubauth before subauth is accessed Access psid-subauthpsid-numsubauth - 1 without checking if numsubauth is non-zero leads to an out-of-bounds read. This patch adds a validation step to ensure numsubauth !...

PT-2024-12777 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux Kernel ksmbd affected versions not specified Description: A flaw was found in the handling of SMB2 read requests in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in...

PT-2024-2003 · Linux +4 · Linux Kernel +4

Name of the Vulnerable Software and Affected Versions: Linux kernel ksmbd affected versions not specified Description: The issue is related to the incorrect handling of authentication tokens in the smb2 sess setup function within the Linux kernel's ksmbd server. This can potentially allow an...