CVE-2026-52996 ksmbd: fix durable fd leak on ClientGUID mismatch in durable v2 open

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix durable fd leak on ClientGUID mismatch in durable v2 open ksmbdlookupfdcguid returns a ksmbdfile with its refcount incremented via ksmbdfpget. parsedurablehandlecontext in the DURABLEREQV2 case properly releases this...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: smb/server: Fixed the reference count leak in smb2open. When ksmbdvfsgetattr fails, the reference count of ksmbdfile must be released...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ksmbd: A memory leak was fixed in getfileallinfo. In getfileallinfo, if vfsgetattr fails, the function returns immediately without freeing the allocated filename, resulting in a memory leak. This issue was fixed by freeing the...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The lock-range check for files with equal size is skipped, to avoid underflow when size == 0. When size equals the current isize including 0, the code that calls checklockrangefilp, isize, size - 1, WRITE will compute size...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The ATTRCTIME flags were set when setting the mtime. David reported that the new warning from setattrcopymgtime appears as follows: 113.215316 ------------ Cut here ----------- 113.215974 WARNING: CPU: 1 PID: 31 at...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: ipc: Fix for use-after-free in ipcmsgsendrequest The ipcmsgsendrequest function waits for a generic netlink reply using an ipcmsgtableentry on the stack. The generic netlink handler handlegenericevent/handleresponse fil...

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...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Buffer validation was corrected by including the size of the null-terminating character in the EA length. The smb2setea function, which handles Extended Attributes EA, conducted buffer validation checks that incorrectly...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: smb: Server: Fixed a leak of activenumconn in ksmbdtcpnewconnection. When ksmbdtcpnewconnection fails due to a kthreadrun failure, the transport is freed using freetransport, which does not decrement activenumconn, resulting in a...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix for use-after-free in ksmbdtreeconnectput under concurrency conditions. Under high concurrency, a tree-connection object tcon is freed during a disconnection path, while another path still holds a reference to it...

CVE-2026-52944

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...

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...

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...

CVE-2026-52944

Technical details are not publicly available in the provided documents. The CVE describes a permission bypass in ksmbd/fsctl_set_sparse, but no concrete affected products/versions/fixes are included here. Monitor for updates and vendor advisories.

CVE-2026-52944

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-2026-38734

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...

CVE-2026-52944

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...

PT-2026-51759

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In the Linux kernel, the fsctl set sparse function fails to perform necessary permission checks when processing the FSCTL SET SPARSE operation. This allows a client on a read-only share ...

SUSE 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

A flaw was found in the ksmbd component of the Linux kernel. This vulnerability allows an attacker to gain unauthorized access to session information or resources by exploiting an improper scope in the session binding mechanism. This could potentially compromise the integrity or confidentiality o...