EUVD-2026-73551

Out-of-bounds read in Windows SMB Client allows an authorized attacker to disclose information locally...

EUVD-2026-73020

Out-of-bounds read in Windows SMB Client allows an authorized attacker to disclose information over a network...

CVE-2025-33073

CVE-2025-33073 — Windows SMB Client NTLM Reflection EoP Research writeup by Sentinel AI Defense. Defensive analysis only — no working exploit or PoC is published here. An improper access control flaw in the Windows SMB Client that revives NTLM reflection techniques thought to be mitigated — letti...

kernel: smb: client: validate DFS referral PathConsumed

A flaw was found in the Linux kernel's Server Message Block SMB client. A remote attacker could send a specially crafted SMB response containing a malformed Distributed File System DFS referral. This could cause the PathConsumed value to exceed the search name length, leading to an out-of-bounds...

kernel: smb/client: fix out-of-bounds read in smb2_compound_op()

A flaw was found in the Linux kernel's Server Message Block SMB client. A remote attacker, acting as a malicious SMB server, could send a specially crafted, truncated response with an oversized buffer length. This could lead to an out-of-bounds read in the smb2compoundop function, allowing the...

Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: crypto: pcrypt - Fix handling of MAYBACKLOG requests CVE-2026-43493 kernel: netfilter: conntrack: remove sprintf usage...

kernel: smb/client: fix out-of-bounds read in symlink_data()

A flaw was found in the Linux kernel's Server Message Block SMB client. This vulnerability arises from insufficient length validation in the smb2checkmessage function when processing symlink error responses. A remote attacker could exploit this by sending a specially crafted symlink error respons...

kernel: smb: client: fix query directory replay double-free

A flaw was found in the Linux kernel's Server Message Block SMB client. This vulnerability, a double-free error, occurs when the client attempts to free the same memory buffer twice during a directory query operation. An attacker could potentially exploit this flaw to cause memory corruption,...

CVE-2026-46243

🚨 CVE-2026-46243 - CIFSwitch Linux Kernel Local Privilege Escalation LPE Local Privilege Escalation vulnerability affecting the Linux Kernel CIFS/SMB client. 📖 Overview CVE-2026-46243 is a Local Privilege Escalation LPE vulnerability within the Linux Kernel's CIFS/SMB client. Improper validation ...

windows-smb-vulnerability-framework-cve-2025-33073

Windows SMB Client Vulnerability Research Framework Author: cyberseallll Created: 2025 Overview I developed this research framework to analyze and understand CVE-2025-33073, a critical Windows SMB Client Elevation of Privilege vulnerability. This implementation provides comprehensive tools for...

cifswitch-check

cifswitch-check A shell script to check whether a Linux system is exposed to CIFSwitch CVE-2026-46243 — a local privilege escalation vulnerability in the Linux kernel's CIFS/SMB client that has been present since 2007. Runs on bare-metal hosts, VMs, and inside containers. Designed to drop straigh...

kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath

A flaw was found in the Linux kernel's CIFS Common Internet File System client. When the cifssanitizeprepath function processes specially crafted input, such as an empty string or a string containing only delimiters, it can attempt to read data beyond its allocated memory buffer. This out-of-boun...

Blackash-CVE-2025-33073

✨ CVE-2025-33073: Windows SMB RCE Vulnerability 🚨 🔥 High-Severity Authenticated Remote Code Execution 🔥 Improper Access Control in Windows SMB Client CWE-284 🛡️ Key Details at a Glance...

kernel: smb: client: fix change notify replay double-free

A flaw was found in the Linux kernel's Server Message Block SMB client. This vulnerability occurs due to a double-free error when handling change notify replies. If a response attempt returns a replayable error and frees its buffer, and then SMB2notifyinit fails, the same buffer can be freed agai...

kernel: smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()

A flaw was found in the Linux kernel's Server Message Block SMB client. A missing lock around the tccount increment in the smb2findsmbsesstconunlocked function creates a race condition. This vulnerability, caused by an incomplete refactoring of locking mechanisms, could lead to unexpected behavio...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098924)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098924 advisory. In the Linux kernel, the following vulnerability has been resolved: smb: client: restrict implied bcc0 exemption to responses without data area smb2checkmessage has ...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098747)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098747 advisory. 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...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098694)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098694 advisory. In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in smb2isvalidoplockbreak Skip sessions that are being teared down...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098683)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098683 advisory. In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix use-after-free in cifsfilldirent There is a race condition in the readdir...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098973)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098973 advisory. In the Linux kernel, the following vulnerability has been resolved: smb: client: let recvdone verify dataoffset, datalength and remainingdatalength This is inspired ...