CVE-2025-38561

CVE-2025-38561 ksmbd: PreauhHashValue race condition If client send multiple session setup requests to ksmbd, PreauhHashValue race condition could happen...

Astra Linux – Vulnerability in Linux 5.15

A flaw was discovered in the ksmbd component of the Linux kernel, a high-performance in-kernel SMB server. The specific flaw occurs during the processing of SMB2SESSIONSETUP and SMB2LOGOFF commands. The issue arises due to the lack of proper locking when performing operations on an object. An...

Astra Linux – Vulnerability in Linux 5.15

A flaw was discovered in the ksmbd component of the Linux kernel. A memory leak may occur if a client sends a session setup request with an unknown NTLMSSP message type, potentially leading to resource exhaustion...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fixed the use-of-free issue in session logoff. The sess-user object may currently be used by another thread. For example, if another connection sends a session setup request to make the session available for use. The...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Validates the mech token during session setup. If a client sends an invalid mech token in a session setup request, ksmbd validates it and reports an error if the token is invalid...

SUSE CVE-2026-64448

In the Linux kernel, the following vulnerability has been resolved: smb: client: restrict implied bcc0 exemption to responses without data area smb2checkmessage has a long-standing quirk that accepts a response whose calculated length is one byte larger than the bytes actually received "server ca...

CVE-2026-64448 smb: client: restrict implied bcc[0] exemption to responses without data area

In the Linux kernel, the following vulnerability has been resolved: smb: client: restrict implied bcc0 exemption to responses without data area smb2checkmessage has a long-standing quirk that accepts a response whose calculated length is one byte larger than the bytes actually received "server ca...

CVE-2026-64448 smb: client: restrict implied bcc[0] exemption to responses without data area

In the Linux kernel, the following vulnerability has been resolved: smb: client: restrict implied bcc0 exemption to responses without data area smb2checkmessage has a long-standing quirk that accepts a response whose calculated length is one byte larger than the bytes actually received "server ca...

EUVD-2026-48792

In the Linux kernel, the following vulnerability has been resolved: smb: client: restrict implied bcc0 exemption to responses without data area smb2checkmessage has a long-standing quirk that accepts a response whose calculated length is one byte larger than the bytes actually received "server ca...

PT-2026-64669

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds read issue exists in the SMB client. The smb2 check message function incorrectly applies a one-byte length exemption unconditionally, regardless of whether the command...

SUSE CVE-2026-53383

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject non-VALID session in compound request branch smb2checkusersession takes a shortcut for any operation that is not the first in a COMPOUND request: it reuses work-sess the session bound by the first operation and...

CVE-2026-53383

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject non-VALID session in compound request branch smb2checkusersession takes a shortcut for any operation that is not the first in a COMPOUND request: it reuses work-sess the session bound by the first operation and...

CVE-2026-53383 ksmbd: reject non-VALID session in compound request branch

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject non-VALID session in compound request branch smb2checkusersession takes a shortcut for any operation that is not the first in a COMPOUND request: it reuses work-sess the session bound by the first operation and...

PT-2026-61088

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A remote NULL-pointer dereference exists in the ksmbd component of the Linux kernel. The smb2 check user session function fails to re-verify that a session state is SMB2 SESSION VALID fo...

The vulnerability of the smb2_sess_setup() function in the fs/smb/server/smb2pdu.c module, which is part of the SMB server support in Linux kernel, allows a hacker to cause a service failure.

The vulnerability of the smb2sesssetup function in the fs/smb/server/smb2pdu.c module of the SMB server implementation in Linux operating systems is related to errors during link counters updates. Exploiting this vulnerability could allow an attacker to cause a service failure...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: smb/server: A possible reference count leak in smb2sesssetup has been fixed. The reference count of ksmbdsession will leak when the session needs to be reconnected. This issue has been fixed by adding the missing...

CVE-2026-52911

In the Linux kernel, the following vulnerability has been resolved: ksmbd: scope conn-binding slowpath to bound sessions only When the binding SESSIONSETUP sets conn-binding = true, the flag stays set after the call so that the global session lookup in ksmbdsessionlookupall can find the session,...

CVE-2026-52911

In the Linux kernel, the following vulnerability has been resolved: ksmbd: scope conn-binding slowpath to bound sessions only When the binding SESSIONSETUP sets conn-binding = true, the flag stays set after the call so that the global session lookup in ksmbdsessionlookupall can find the session,...

CVE-2026-52911 ksmbd: scope conn->binding slowpath to bound sessions only

In the Linux kernel, the following vulnerability has been resolved: ksmbd: scope conn-binding slowpath to bound sessions only When the binding SESSIONSETUP sets conn-binding = true, the flag stays set after the call so that the global session lookup in ksmbdsessionlookupall can find the session,...

PT-2026-51201

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In the ksmbd module, a flaw exists where the conn-binding flag remains set after a SESSION SETUP call. Because this flag is connection-wide, the global session lookup function ksmbd...