ksmbrace

ksmbrace Schwachstellenforschung in ksmbd , dem SMB3-Server im Linux-Kernel fs/smb/server/. Schwachstellen für authentifizierte Angreifer auf den Durable-Handle- und Pfadauflösungspfaden von ksmbd. Der Name spielt auf das Race-Condition-Thema dieser Arbeit an siehe die zurückgehaltene...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: smb/server: fixed a potential null-ptr-deref of leasectxinfo in smb2open A null-ptr-deref will occur when reqoplevel == SMB2OPLOCKLEVELLEASE and parseleasestate returns NULL. This issue was fixed by checking whether...

Linux Distros Unpatched Vulnerability : CVE-2026-72381

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix use-after-free of fp-owner.name in durable handle owner check Two concurrent SMB2 durable reconnects DH2C/DHnC on the same persistentid race the...

CVE-2026-72381 ksmbd: fix use-after-free of fp->owner.name in durable handle owner check

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of fp-owner.name in durable handle owner check Two concurrent SMB2 durable reconnects DH2C/DHnC on the same persistentid race the fp-owner.name compare-read in ksmbdvfscomparedurableowner against the kfr...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Validates the owner of the durable handle upon reconnection. Currently, ksmbd does not verify whether the user attempting to reconnect to a durable handle is the same user who originally opened the file. This allows any...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: smb/server: Fixed the refcount leak in parsedurablehandlecontext. When the command is a replay operation and -ENOEXEC is returned, the refcount of ksmbdfile must be released...

CVE-2026-64141

A flaw was found in the ksmbd component of the Linux kernel. A remote attacker can trigger a null pointer dereference by negotiating a new session with a specific client identifier ClientGuid and issuing a Server Message Block SMB2 CREATE request with a lease context on a different inode after a...

EUVD-2026-45825

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in procshowfiles When a SMB2 client opens a file with a durable v2 handle and then issues SMB2 SESSIONLOGOFF, sessionfdcheck clears fp-tcon = NULL on the reconnectable file pointer but leaves t...

SUSE CVE-2026-52996

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...

CVE-2026-52996

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...

CVE-2026-52996

Technical details are not publicly available in the provided documents. Monitor for updates.

Exploit for CVE-2026-31717

CVE-2026-31717: ksmbd DHnC Durable-Handle Reconnect Access-Con...

SUSE CVE-2026-31717

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate owner of durable handle on reconnect Currently, ksmbd does not verify if the user attempting to reconnect to a durable handle is the same user who originally opened the file. This allows any authenticated user to...

Linux Distros Unpatched Vulnerability : CVE-2026-31717

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: validate owner of durable handle on reconnect Currently, ksmbd does not verify if the user attempting to reconnect to a durable handle is the same user w...

CVE-2026-31717

A flaw was found in ksmbd, a component of the Linux kernel. This vulnerability allows an authenticated user to hijack an orphaned durable handle by predicting or brute-forcing its persistent ID. This could lead to unauthorized access to file sessions and potentially sensitive data or services...

CVE-2026-31717

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate owner of durable handle on reconnect Currently, ksmbd does not verify if the user attempting to reconnect to a durable handle is the same user who originally opened the file. This allows any authenticated user to...

CVE-2026-31717

In the Linux kernel ksmbd, a vulnerability allows an authenticated user to hijack an orphaned durable handle by reconnecting with a different security context. The issue stems from ksmbd not verifying that the requester’s SecurityContext matches the original opener when a durable handle is reconn...

CVE-2026-31717 ksmbd: validate owner of durable handle on reconnect

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate owner of durable handle on reconnect Currently, ksmbd does not verify if the user attempting to reconnect to a durable handle is the same user who originally opened the file. This allows any authenticated user to...

CVE-2026-31717

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate owner of durable handle on reconnect Currently, ksmbd does not verify if the user attempting to reconnect to a durable handle is the same user who originally opened the file. This allows any authenticated user to...

EUVD-2026-26526

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate owner of durable handle on reconnect Currently, ksmbd does not verify if the user attempting to reconnect to a durable handle is the same user who originally opened the file. This allows any authenticated user to...