CVE-2025-33073

CVE-2025-33073 — Escalada de Privilegios por Reflexión NTLM en el Cliente SMB de Windows Informe de investigación por Sentinel AI Defense. Solo análisis defensivo — no se publica ningún exploit funcional ni PoC aquí. Una falla de control de acceso inadecuado en el Cliente SMB de Windows que reviv...

CVE-2026-46243

🚨 CVE-2026-46243 - CIFSwitch Escalada de Privilegios Local del Kernel de Linux LPE Vulnerabilidad de escalada de privilegios local que afecta al cliente CIFS/SMB del kernel de Linux. 📖 Resumen CVE-2026-46243 es una vulnerabilidad de escalada de privilegios local LPE dentro del cliente CIFS/SMB de...

CVE-2026-84543

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may cause unexpected system termination or corrupt kernel memory...

CVE-2026-84509

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination...

CVE-2026-84515

CVE-2026-84515 is an out-of-bounds write in Apple macOS, addressed with improved bounds checking. The vulnerability is triggered by connecting to a malicious SMB server , which may lead to kernel memory corruption . The fix is available in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe...

CVE-2026-84515

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to kernel memory corruption...

CVE-2026-84509

An out-of-bounds read vulnerability in macOS, triggered when connecting to a malicious SMB server , may lead to unexpected system termination . The issue was addressed with improved bounds checking and is fixed in macOS Golden Gate 27 , macOS Sequoia 15.8 , and macOS Tahoe 26.7 . No specific expl...

EUVD-2026-77995

An integer underflow was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: smb: client: Do not log plaintext credentials in cifssetcifscreds When debug logging is enabled, cifssetcifscreds logs the key payload and exposes the plaintext username and password. Remove the debug log to avoid exposing...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: smb: client: fixed the issue where krb5 mounts failed when the client tried to mount shares with incorrect credentials. It turned out that the client was reusing the SMB session from the first mount attempt, even though a differe...

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 smb2isnetworknamedeleted. Skipped sessions that are being terminated status == SESEXITING to avoid UAF...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: smb: client: fixed a use-after-free bug in cifsdebugdataprocShow Skipped SMB sessions that are being torn down e.g., @ses-sesstatus == SESEXITING in cifsdebugdataProcShow to avoid use-after-free in @ses. This fixes the followi...

Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

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,...

UBUNTU-CVE-2026-89636

In the Linux kernel, the following vulnerability has been resolved: smb: client: clear ce-tgthint in freetgts When freetgts frees all structures in ce-tlist, ce-tgthint is left pointing to one of the freed cachedfstgt structures. If ce-tgthint is not reset before it is used later, it results in a...

UBUNTU-CVE-2026-89633

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOB read/write from unvalidated DataOffset in coalescet2 coalescet2 computes data pointers directly from server-supplied DataOffset fields with no validation against buffer bounds: dataareaoftgt = char...

UBUNTU-CVE-2026-89630

In the Linux kernel, the following vulnerability has been resolved: smb: client: restore the dataoffset bound in isvalidoplockbreak Commit 83bfbd0bb902 "cifs: Remove the RFC1002 header from smbhdr" changed the quantity this bound is measured against. It used to be srv-totalread minus the 4-byte...

CVE-2026-89632

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-before-check of ReparseDataLength in reparsebufptr reparsebufptr reads buf-ReparseDataLength before checking that count covers the full fixed header: buf = struct reparsedatabuffer u8 io + off; len = sizeofbu...

CVE-2026-89631

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon bounds its strnlen over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 goes negative as an int and converts to a...

UBUNTU-CVE-2026-89632

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-before-check of ReparseDataLength in reparsebufptr reparsebufptr reads buf-ReparseDataLength before checking that count covers the full fixed header: buf = struct reparsedatabuffer u8 io + off; len = sizeofbu...