PT-2026-61456

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak exists in the ksmbd module within the set posix acl entries dacl function. The issue occurs when the system detects a DACL Discretionary Access Control List size overflow...

PT-2026-61333

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix durable reconnect error path file lifetime After a durable reconnect succeeds, ksmbd reopen durable fd republishes the same ksmbd file into the session volatile-id table. If smb2 open then takes a later error path,...

PT-2026-61458

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A null pointer dereference exists in the ksmbd module. During durable-handle session teardown, the session fd check function sets op-conn to NULL for matching opinfo entries, but these...

PT-2026-61457

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A null pointer dereference exists in the proc show files function within the ksmbd module. This occurs when an SMB2 client opens a file using a durable v2 handle and then performs an SMB...

PT-2026-61088

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ksmbd module during the handling of SMB2 compound requests. The smb2 check user session function fails to verify if a session is in the SMB2 SESSION VALID state fo...

SUSE CVE-2026-53046

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine ksmbdcryptmessage sets a NULL completion callback on AEAD requests and does not handle the -EINPROGRESS return code from async hardware crypto engines like the...

Linux Distros Unpatched Vulnerability : CVE-2026-53271

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ksmbd: fix NULL-deref of opinfo-conn in oplock/lease break notifiers smb2oplockbreaknoti and smb2leasebreaknoti read opinfo-conn into a local with neither...

SUSE CVE-2026-53198

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of a deferred filelock on double SMB2CANCEL A deferred byte-range lock an SMB2LOCK that blocks registers an async work on conn-asyncrequests via setupasyncwork, with cancelfn = smb2removeblockedlock and...

CVE-2026-53198

A flaw was found in ksmbd, a Linux kernel module that provides an in-kernel SMB server. An authenticated SMB client can trigger a use-after-free vulnerability by sending a double SMB2CANCEL request for the same asynchronous operation. This can lead to memory corruption, potentially allowing an...

CVE-2026-53010

A flaw was found in the Linux kernel's ksmbd component. During a durable reconnect process in the smb2open function, a reference to a durable file descriptor is prematurely dropped. This can lead to a use-after-free vulnerability, potentially resulting in system instability or a denial of service...

CVE-2026-53271

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix NULL-deref of opinfo-conn in oplock/lease break notifiers smb2oplockbreaknoti and smb2leasebreaknoti read opinfo-conn into a local with neither READONCE nor a NULL check. Both run from oplockbreak after opinfogetlist h...

CVE-2026-53198

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of a deferred filelock on double SMB2CANCEL A deferred byte-range lock an SMB2LOCK that blocks registers an async work on conn-asyncrequests via setupasyncwork, with cancelfn = smb2removeblockedlock and...

UBUNTU-CVE-2026-53198

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of a deferred filelock on double SMB2CANCEL A deferred byte-range lock an SMB2LOCK that blocks registers an async work on conn-asyncrequests via setupasyncwork, with cancelfn = smb2removeblockedlock and...

CVE-2026-53271

CVE-2026-53271 affects the Linux kernel ksmbd component. The vulnerability is a NULL-deref in oplock/lease break notifiers: smb2_oplock_break_noti() and smb2_lease_break_noti() read opinfo->conn into a local buffer without READ_ONCE and without a NULL check. After opinfo_get_list() drops ci-&g...

CVE-2026-53271

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix NULL-deref of opinfo-conn in oplock/lease break notifiers smb2oplockbreaknoti and smb2leasebreaknoti read opinfo-conn into a local with neither READONCE nor a NULL check. Both run from oplockbreak after opinfogetlist h...

EUVD-2026-39222

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix NULL-deref of opinfo-conn in oplock/lease break notifiers smb2oplockbreaknoti and smb2leasebreaknoti read opinfo-conn into a local with neither READONCE nor a NULL check. Both run from oplockbreak after opinfogetlist h...

CVE-2026-53271

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix NULL-deref of opinfo-conn in oplock/lease break notifiers smb2oplockbreaknoti and smb2leasebreaknoti read opinfo-conn into a local with neither READONCE nor a NULL check. Both run from oplockbreak after opinfogetlist h...

CVE-2026-53198

The CVE-2026-53198 issue affects ksmbd in the Linux kernel: a deferred byte-range lock (SMB2_LOCK) uses async_work with a cancel_fn (smb2_remove_blocked_lock) and cancel_argv pointing to a file_lock. If a second SMB2_CANCEL arrives before release_async_work(), the cancel callback can run again on...

CVE-2026-53198 ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of a deferred filelock on double SMB2CANCEL A deferred byte-range lock an SMB2LOCK that blocks registers an async work on conn-asyncrequests via setupasyncwork, with cancelfn = smb2removeblockedlock and...

CVE-2026-53198 ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of a deferred filelock on double SMB2CANCEL A deferred byte-range lock an SMB2LOCK that blocks registers an async work on conn-asyncrequests via setupasyncwork, with cancelfn = smb2removeblockedlock and...