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...

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...

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...

UBUNTU-CVE-2026-68100

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate numsubauth when copying ACE in setntacldacl setntacldacl copies each ACE from the attacker-controlled stored security descriptor verbatim into the response DACL without checking sid.numsubauth. The ACE bytes...

CVE-2026-68100 ksmbd: validate num_subauth when copying ACE in set_ntacl_dacl

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate numsubauth when copying ACE in setntacldacl setntacldacl copies each ACE from the attacker-controlled stored security descriptor verbatim into the response DACL without checking sid.numsubauth. The ACE bytes...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: smb/server: The function ksmbdsessionrpcclose is called on the error path in the createsmb2pipe function. When the ksmbdiovpinrsp function fails, we should call ksmbdsessionrpcclose...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The infinite loop caused by resetting nextsmb2rcvhdroff during error paths has been fixed. The issue occurs when a signed request fails the smb2 signature verification check. In processrequest, if checksignreq returns an...

PT-2026-69501

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ksmbd module where the set ntacl dacl function copies Access Control Entries ACE from a stored security descriptor into the response Discretionary Access Control...

Linux Distros Unpatched Vulnerability : CVE-2026-68100

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: validate numsubauth when copying ACE in setntacldacl setntacldacl copies each ACE from the attacker-controlled stored security descriptor verbatim into...

openSUSE 16: libwireshark18 / libwiretap15 / libwsutil16 / wireshark / etc (openSUSE-SU-2026:21534-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21534-1 advisory. Update to version 4.4.17. - CVE-2026-6867: SMB2 protocol dissector crash bsc1263727. - CVE-2026-7375: UDS protocol dissector infinite loop...

CVE-2026-64597

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2close replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2closeinit fails before the next send, cleanup retains the previous buffer type and fre...

CVE-2026-64598

In the Linux kernel, the following vulnerability has been resolved: smb/client: Fix error code in smb2aeadreqalloc The "numsgs" variable is a u32 so "ERRPTRnumsgs" doesn't work. We would have to do something similar to the previous line where it's cast to int and then long. However, it's simpler ...

The vulnerabilities of the functions ksmbd_tree_conn_connect(), ksmbd_tree_connect PUT(), and ksmbd_tree_conn_disconnect() in the module fs/smb/server/mgmt/tree_connect.c, as well as the function smb2_tree_disconnect() in the module fs/smb/server/smb2pdu.c, allow attackers to compromise the confidentiality, integrity, and accessibility of protected information within the SMB server framework of the Linux operating system.

The vulnerabilities of the functions ksmbdtreeconnconnect, ksmbdtreeconnect PUT, and ksmbdtreeconndisconnect in the module fs/smb/server/mgmt/treeconnect.c, as well as the function smb2treedisconnect in the module fs/smb/server/smb2pdu.c, are related to the reuse of previously freed memory due to...

SUSE-SU-2026:3501-1 Security update for wireshark

This update for wireshark fixes the following issues: Update to version 4.6.7: - CVE-2026-5299: ICMPv6 dissector crash bsc1263757. - CVE-2026-5401: AFP dissector crash bsc1263756. - CVE-2026-5402: TLS dissector crash and possible code execution bsc1263755. - CVE-2026-5403: SBC audio codec crash...

Security update for wireshark

This update for wireshark fixes the following issues: Update to version 4.6.7: CVE-2026-5299: ICMPv6 dissector crash bsc1263757. CVE-2026-5401: AFP dissector crash bsc1263756. CVE-2026-5402: TLS dissector crash and possible code execution bsc1263755. CVE-2026-5403: SBC audio codec crash bsc126376...

CVE-2026-64578

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate compound request size before reading StructureSize2 When ksmbd validates a compound chained SMB2 request, ksmbdsmb2checkmessage reads pdu-StructureSize2 without first checking that the compound element is large...

CVE-2026-64578

Summary: CVE-2026-64578 affects the ksmbd component of the Linux kernel. A vulnerability exists where ksmbd_smb2_check_message() reads the 2-byte StructureSize2 field at offset 64 of an SMB2 compound element without first ensuring the element is large enough. An attacker can craft a compound SMB2...

EUVD-2026-53272

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate compound request size before reading StructureSize2 When ksmbd validates a compound chained SMB2 request, ksmbdsmb2checkmessage reads pdu-StructureSize2 without first checking that the compound element is large...

SUSE CVE-2026-64396

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix UAF of struct filelock in SMB2LOCK deferred-lock cancellation When a blocking byte-range lock request is deferred in the FILELOCKDEFERRED path, ksmbd registers the asynchronous work into the connection's asyncrequests...