CVE-2026-64394 ksmbd: add a WRITE_DAC/WRITE_OWNER check to SMB2 SET_INFO SECURITY

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add a WRITEDAC/WRITEOWNER check to SMB2 SETINFO SECURITY commit cc57232cae23 "ksmbd: fix FSCTL permission bypass by adding a permission check for FSCTLSETSPARSE" added a fp-daccess gate to fsctlsetsparse and noted that...

CVE-2026-64394

Summary: CVE-2026-64394 relates to the Linux kernel ksmbd SMB2 SET_INFO SECURITY path. The fix adds a per-handle access gate to prevent rewriting security descriptors when the handle lacks WRITE_DAC/WRITE_OWNER. Previously, SMB2_SET_INFO with InfoType SMB2_O_INFO_SECURITY could re-permission a fi...

Linux Distros Unpatched Vulnerability : CVE-2026-64394

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: add a WRITEDAC/WRITEOWNER check to SMB2 SETINFO SECURITY commit cc57232cae23 ksmbd: fix FSCTL permission bypass by adding a permission check for...

The vulnerability of the smb2_set_ea() 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 smb2setea function in the fs/smb/server/smb2pdu.c module of the SMB server implementation in Linux operating systems is related to the copying of buffers without checking the size of the input data a classic buffer overflow attack. Exploiting this vulnerability could allo...

UBUNTU-CVE-2025-68806

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2setea function, which handles Extended Attributes EA, was performing buffer validation checks that incorrectly omitted the size of the null...

CVE-2025-68806 ksmbd: fix buffer validation by including null terminator size in EA length

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2setea function, which handles Extended Attributes EA, was performing buffer validation checks that incorrectly omitted the size of the null...

CVE-2023-4130

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...

AZL-52926 CVE-2024-50152 affecting package kernel for versions less than 6.6.64.2-1

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix possible double free in smb2setea Clang static checkerscan-build warning： fs/smb/client/smb2ops.c:1304:2: Attempt to free released memory. 1304 | kfreeea; | ^ There is a double free in such case: 'ea is initializ...

UBUNTU-CVE-2024-50152

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix possible double free in smb2setea Clang static checkerscan-build warning： fs/smb/client/smb2ops.c:1304:2: Attempt to free released memory. 1304 | kfreeea; | ^ There is a double free in such case: 'ea is initializ...