CVE-2026-68431

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate minimum PDU size for transform requests The receive path applies the minimum SMB2 PDU size check only when ProtocolId is SMB2PROTONUMBER. A packet carrying SMB2TRANSFORMPROTONUM bypasses the check even when the...

CVE-2026-68431

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate minimum PDU size for transform requests The receive path applies the minimum SMB2 PDU size check only when ProtocolId is SMB2PROTONUMBER. A packet carrying SMB2TRANSFORMPROTONUM bypasses the check even when the...

The vulnerability of the ksmbd component in the Linux operating system’s kernel allows a hacker to trigger a service failure.

The vulnerability of the ksmbd component in the Linux operating system’s kernel is related to the simultaneous execution using shared resources with incorrect synchronization. Exploiting this vulnerability can allow an attacker to cause a service failure...

Linux Distros Unpatched Vulnerability : CVE-2026-68431

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: validate minimum PDU size for transform requests The receive path applies the minimum SMB2 PDU size check only when ProtocolId is SMB2PROTONUMBER. A pack...

PT-2026-70945

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ksmbd module where the receive path only applies the minimum SMB2 PDU Protocol Data Unit size check when the ProtocolId is SMB2 PROTO NUMBER. Packets using SMB2...

CVE-2026-68098

A flaw was found in ksmbd, a Linux kernel module. The setntacldacl function, which processes Discretionary Access Control Lists DACLs, can stop copying Access Control Entries ACEs prematurely due to a size accounting overflow. This can cause a subsequent deduplication process to read beyond the...

CVE-2026-68099

A flaw was found in ksmbd, a Linux kernel module that provides an in-kernel SMB server. An integer overflow vulnerability exists when processing Access Control Lists ACLs. This flaw can lead to a malformed ACL, which, when re-parsed by clients or ksmbd itself, may trigger out-of-bounds reads. Thi...

CVE-2026-68130

A flaw was found in ksmbd, a kernel module for SMB3 protocol server in the Linux kernel. An authenticated attacker can exploit a vulnerability in the NTLM NT LAN Manager authentication process. By manipulating specific fields in the NTLM authentication blob, an attacker can cause a victim's sessi...

CVE-2026-68100

A flaw was found in ksmbd in the Linux kernel. An authenticated client can provide a crafted security descriptor that is not properly validated when copying Access Control Entries ACEs in the setntacldacl function. This improper validation leads to an out-of-bounds heap read, allowing the client ...

CVE-2026-68381

A flaw was found in ksmbd, a Linux kernel module that provides an in-kernel SMB server. A race condition exists during connection teardown and asynchronous oplock or lease break notifications. This can lead to a use-after-free vulnerability, where a freed connection object is still accessed by a...

ksmbd: pin conn during async oplock break notification

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Linux Distros Unpatched Vulnerability : CVE-2026-68381

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: pin conn during async oplock break notification smb2oplockbreaknoti and smb2leasebreaknoti store a ksmbdconn pointer in an async ksmbdwork and then queue...

CVE-2026-68083

A flaw was found in ksmbd, a Linux kernel module that provides an in-kernel SMB server. An authenticated client could exploit a path resolution error, specifically in the ksmbdvfskernpathcreate function. This vulnerability allows a client to use ".." components in a path to escape the intended...

CVE-2026-68381

In the Linux kernel, the following vulnerability has been resolved: ksmbd: pin conn during async oplock break notification smb2oplockbreaknoti and smb2leasebreaknoti store a ksmbdconn pointer in an async ksmbdwork and then queue that work on ksmbd-io. The work only increments conn-rcount, which...

UBUNTU-CVE-2026-68381

In the Linux kernel, the following vulnerability has been resolved: ksmbd: pin conn during async oplock break notification smb2oplockbreaknoti and smb2leasebreaknoti store a ksmbdconn pointer in an async ksmbdwork and then queue that work on ksmbd-io. The work only increments conn-rcount, which...

DEBIAN-CVE-2026-68097

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate ACE size against SID sub-authorities setntacldacl validates sid.numsubauth before copying an ACE, but does not verify that the declared ACE size contains all sub-authorities described by that field. An undersized...

CVE-2026-68097

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate ACE size against SID sub-authorities setntacldacl validates sid.numsubauth before copying an ACE, but does not verify that the declared ACE size contains all sub-authorities described by that field. An undersized...

CVE-2026-68098

In the Linux kernel, the following vulnerability has been resolved: ksmbd: bound DACL dedup walk to copied ACEs setntacldacl can stop copying ACEs before consuming the full input DACL when size accounting overflows. When that happens, numaces reflects only the ACEs that were actually copied into...

CVE-2026-68097

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate ACE size against SID sub-authorities setntacldacl validates sid.numsubauth before copying an ACE, but does not verify that the declared ACE size contains all sub-authorities described by that field. An undersized...

UBUNTU-CVE-2026-68130

In the Linux kernel, the following vulnerability has been resolved: ksmbd: defer destroyprevioussession until after NTLM authentication In ntlmauthenticate, destroyprevioussession is called using a user pointer resolved from the client-supplied NTLM blob username field before the NTLMv2 response ...