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...

CVE-2026-53271

A flaw was found in the ksmbd component of the Linux kernel. A remote attacker could exploit a NULL-dereference vulnerability in the oplock/lease break notifiers. This occurs because opinfo-conn is read without proper checks, allowing a concurrent Server Message Block SMB2 LOGOFF to set op-conn t...

UBUNTU-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-2026-53271

The CVE-2026-53271 issue affects the Linux kernel ksmbd during oplock/lease break notifications (smb2_oplock_break_noti and smb2_lease_break_noti). The root cause is reading opinfo->conn into a local variable without READ_ONCE() and without a NULL check after opinfo_get_list() has dropped ci-&...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: cifs: fixed potential OOPs in cifsoplockbreak With deferred close, there may be situations where closes occur simultaneously with lease breaks. Additionally, when checking whether to send the lease response, oplockresponse can...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: fixed a UAF in smb20oplockbreakack. removed references after using opinfo...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: smb: Client: Fixed a potential Use-after-Free UAF in isvalidoplockbreak. Skipped sessions that are being torn down status == SESEXITING to avoid UAF...

Linux Distros Unpatched Vulnerability : CVE-2023-54258

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - cifs: fix potential oops in cifsoplockbreak With deferred close we can have closes that race with lease breaks, and so with the current checks for whether to se...

EUVD-2023-60383

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential oops in cifsoplockbreak With deferred close we can have closes that race with lease breaks, and so with the current checks for whether to send the lease response, oplockresponse, this can mean that an unmount...

CVE-2023-54258

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential oops in cifsoplockbreak With deferred close we can have closes that race with lease breaks, and so with the current checks for whether to send the lease response, oplockresponse, this can mean that an unmount...

CVE-2023-54258

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential oops in cifsoplockbreak With deferred close we can have closes that race with lease breaks, and so with the current checks for whether to send the lease response, oplockresponse, this can mean that an unmount...

UBUNTU-CVE-2023-54258

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential oops in cifsoplockbreak With deferred close we can have closes that race with lease breaks, and so with the current checks for whether to send the lease response, oplockresponse, this can mean that an unmount...

CVE-2023-54258

CVE-2023-54258 affects the Linux kernel CIFS/SMB client code. The vulnerability stems from a race between deferred closes and lease breaks in cifs_oplock_break, where an unmount (kill_sb) could observe an invalid tcon->ses if not properly synchronized. The documented fix orders the checks befo...

CVE-2023-54258 cifs: fix potential oops in cifs_oplock_break

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential oops in cifsoplockbreak With deferred close we can have closes that race with lease breaks, and so with the current checks for whether to send the lease response, oplockresponse, this can mean that an unmount...

CVE-2023-54258 cifs: fix potential oops in cifs_oplock_break

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential oops in cifsoplockbreak With deferred close we can have closes that race with lease breaks, and so with the current checks for whether to send the lease response, oplockresponse, this can mean that an unmount...

CVE-2023-54258

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential oops in cifsoplockbreak With deferred close we can have closes that race with lease breaks, and so with the current checks for whether to send the lease response, oplockresponse, this can mean that an unmount...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from a failure to verify the validity of tcon-ses in cifsoplockbreak, which could lead to a null pointer dereference...

kernel: smb: client: fix use-after-free in cifs_oplock_break

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free in cifsoplockbreak A race condition can occur in cifsoplockbreak leading to a use-after-free of the cinode structure when unmounting: cifsoplockbreak cifsFileInfoputcfile cifsFileInfoputfinal...

kernel: smb: client: fix use-after-free in cifs_oplock_break

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free in cifsoplockbreak A race condition can occur in cifsoplockbreak leading to a use-after-free of the cinode structure when unmounting: cifsoplockbreak cifsFileInfoputcfile cifsFileInfoputfinal...

kernel: smb: client: fix use-after-free in cifs_oplock_break

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free in cifsoplockbreak A race condition can occur in cifsoplockbreak leading to a use-after-free of the cinode structure when unmounting: cifsoplockbreak cifsFileInfoputcfile cifsFileInfoputfinal...