CVE-2026-64398

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add a permission check for FSCTLSETZERODATA FSCTLSETZERODATA in smb2ioctl destroys file data via ksmbdvfszerodata - vfsfallocatePUNCHHOLE/ZERORANGE after checking only the share-level KSMBDTREECONNFLAGWRITABLE, with no...

CVE-2026-64399

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add permission checks for FSCTLDUPLICATEEXTENTSTOFILE The FSCTLDUPLICATEEXTENTSTOFILE arm of smb2ioctl overwrites the destination file's data via vfsclonefilerange with neither the share-level KSMBDTREECONNFLAGWRITABLE che...

EUVD-2026-48942

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add a permission check for FSCTLSETZERODATA FSCTLSETZERODATA in smb2ioctl destroys file data via ksmbdvfszerodata - vfsfallocatePUNCHHOLE/ZERORANGE after checking only the share-level KSMBDTREECONNFLAGWRITABLE, with no...

CVE-2026-64398 ksmbd: add a permission check for FSCTL_SET_ZERO_DATA

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add a permission check for FSCTLSETZERODATA FSCTLSETZERODATA in smb2ioctl destroys file data via ksmbdvfszerodata - vfsfallocatePUNCHHOLE/ZERORANGE after checking only the share-level KSMBDTREECONNFLAGWRITABLE, with no...

CVE-2026-52944

A flaw was found in the Linux kernel's ksmbd component. This vulnerability allows a client to bypass intended permission restrictions by using the FSCTLSETSPARSE operation. Specifically, a client on a read-only share can modify a file's sparse attribute, and clients on writable shares can modify...

CVE-2026-52944 ksmbd: fix FSCTL permission bypass by adding a permission check for FSCTL_SET_SPARSE

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix FSCTL permission bypass by adding a permission check for FSCTLSETSPARSE FSCTLSETSPARSE in fsctlsetsparse modifies the file's sparse attribute and saves it through xattr without any permission checks. This exposes two...

EUVD-2025-36979

In the Linux kernel, the following vulnerability has been resolved: cifs: parsedfsreferrals: prevent oob on malformed input Malicious SMB server can send invalid reply to FSCTLDFSGETREFERRALS - reply smaller than sizeofstruct getdfsreferralrsp - reply with number of referrals smaller than...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987524)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-987524 advisory. In the Linux kernel, the following vulnerability has been resolved: cifs: prevent bad output lengths in smb2ioctlqueryinfo When calling smb2ioctlqueryinfo with...

AZL-59760 CVE-2025-21947 affecting package kernel 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipcmsgsendrequest req-handle is allocated using ksmbdacquireid&ipcida, based on idaalloc. req-handle from ksmbdipcloginrequest and FSCTLPIPETRANSCEIVE ioctl can be same and ...

openSUSE Security Update : samba (openSUSE-SU-2013:1921-1)

" - Update to 4.1.3. + DCE-RPC fragment length field is incorrectly checked; CVE-2013-4408; bnc844720. + pamwinbind login without requiremembershipof restrictions; CVE-2012-6150; bnc853347. - Make use of the full gpg pub key file name including the key ID. - Add transparent file compression...

PT-2014-1429

Name of the Vulnerable Software and Affected Versions Samba versions 3.6.6 through 3.6.23 Samba versions 4.0.x before 4.0.18 Samba versions 4.1.x before 4.1.8 Description The issue is related to the improper initialization of the SRV SNAPSHOT ARRAY response field in Samba when a certain vfs shado...