Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The issue of “use-after-free” of conn-preauthinfo in the concurrent SMB2 NEGOTIATE process has been fixed. conn-preauthinfo represents information about a shared connection state struct preauthintegrityinfo, kmalloc-96. Th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Rejects repeated SMB2 NEGOTIATE requests. An unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP,...

SUSE CVE-2026-72422

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of conn-preauthinfo in concurrent SMB2 NEGOTIATE conn-preauthinfo is shared connection state struct preauthintegrityinfo, kmalloc-96 that is allocated and freed by the SMB2 NEGOTIATE handler and read by...

CVE-2026-72422

A flaw was found in ksmbd, the in-kernel SMB3 server for Linux. A remote attacker could exploit a use-after-free vulnerability by sending specially crafted concurrent SMB2 NEGOTIATE requests on the same connection. This could lead to memory corruption, potentially allowing the attacker to execute...

Linux Distros Unpatched Vulnerability : CVE-2026-72422

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 conn-preauthinfo in concurrent SMB2 NEGOTIATE conn-preauthinfo is shared connection state struct preauthintegrityinfo, kmalloc-96...

CVE-2026-74494

A flaw was found in ksmbd, a kernel module for SMB3 protocol support. An unauthenticated client can send multiple SMB2 NEGOTIATE requests on a single connection before a session is established. This leads to a memory leak, as previous allocations are not properly freed. Repeated exploitation of...

SUSE CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

UBUNTU-CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

EUVD-2026-59687

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494 ksmbd: reject repeated SMB2 NEGOTIATE requests

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-74494 ksmbd: reject repeated SMB2 NEGOTIATE requests

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject repeated SMB2 NEGOTIATE requests Unauthenticated client can send multiple successful SMB2 NEGOTIATE requests on one connection before SESSIONSETUP. While the connection is in KSMBDSESSNEEDSETUP, smb2handlenegotiate...

CVE-2026-72422

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of conn-preauthinfo in concurrent SMB2 NEGOTIATE conn-preauthinfo is shared connection state struct preauthintegrityinfo, kmalloc-96 that is allocated and freed by the SMB2 NEGOTIATE handler and read by...

UBUNTU-CVE-2026-72422

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of conn-preauthinfo in concurrent SMB2 NEGOTIATE conn-preauthinfo is shared connection state struct preauthintegrityinfo, kmalloc-96 that is allocated and freed by the SMB2 NEGOTIATE handler and read by...

CVE-2026-72422

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of conn-preauthinfo in concurrent SMB2 NEGOTIATE conn-preauthinfo is shared connection state struct preauthintegrityinfo, kmalloc-96 that is allocated and freed by the SMB2 NEGOTIATE handler and read by...

EUVD-2026-59321

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of conn-preauthinfo in concurrent SMB2 NEGOTIATE conn-preauthinfo is shared connection state struct preauthintegrityinfo, kmalloc-96 that is allocated and freed by the SMB2 NEGOTIATE handler and read by...

CVE-2026-72422

Summary: CVE-2026-72422 fixes a use-after-free in ksmbd’s handling of conn->preauth_info during concurrent SMB2 NEGOTIATE on the same Linux kernel connection. The issue arose because the preauth_info state (shared across the negotiate and response paths) could be freed while a concurrent send-...

CVE-2026-72422 ksmbd: fix use-after-free of conn->preauth_info in concurrent SMB2 NEGOTIATE

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of conn-preauthinfo in concurrent SMB2 NEGOTIATE conn-preauthinfo is shared connection state struct preauthintegrityinfo, kmalloc-96 that is allocated and freed by the SMB2 NEGOTIATE handler and read by...