kernel: smb: client: validate the whole DACL before rewriting it in cifsacl

A flaw was found in the Linux kernel's Server Message Block SMB client, specifically within the cifsacl functionality. A malicious SMB server could provide a malformed Discretionary Access Control List DACL that claims to contain more Access Control Entries ACEs than are actually present. This...

kernel: smb: client: validate the whole DACL before rewriting it in cifsacl

A flaw was found in the Linux kernel's Server Message Block SMB client, specifically within the cifsacl functionality. A malicious SMB server could provide a malformed Discretionary Access Control List DACL that claims to contain more Access Control Entries ACEs than are actually present. This...

kernel: smb: client: validate the whole DACL before rewriting it in cifsacl

A flaw was found in the Linux kernel's Server Message Block SMB client, specifically within the cifsacl functionality. A malicious SMB server could provide a malformed Discretionary Access Control List DACL that claims to contain more Access Control Entries ACEs than are actually present. This...

kernel: smb: client: validate the whole DACL before rewriting it in cifsacl

A flaw was found in the Linux kernel's Server Message Block SMB client, specifically within the cifsacl functionality. A malicious SMB server could provide a malformed Discretionary Access Control List DACL that claims to contain more Access Control Entries ACEs than are actually present. This...

kernel: smb: client: validate the whole DACL before rewriting it in cifsacl

A flaw was found in the Linux kernel's Server Message Block SMB client, specifically within the cifsacl functionality. A malicious SMB server could provide a malformed Discretionary Access Control List DACL that claims to contain more Access Control Entries ACEs than are actually present. This...

Linux Distros Unpatched Vulnerability : CVE-2026-31709

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - smb: client: validate the whole DACL before rewriting it in cifsacl buildsecdesc and idmodetocifsacl derive a DACL pointer from a server-supplied dacloffset and...

CVE-2026-31709

In the Linux kernel, the following vulnerability has been resolved: smb: client: validate the whole DACL before rewriting it in cifsacl buildsecdesc and idmodetocifsacl derive a DACL pointer from a server-supplied dacloffset and then use the incoming ACL to rebuild the chmod/chown security...

CVE-2026-31709

In the Linux kernel SMB client (cifsacl), CVE-2026-31709 arises from insufficient validation of a server-provided DACL when rewriting security descriptors. The fix extends structural validation to ensure the DACL header, size, and per-ACE bounds are checked before any rewrite paths (replace_sids_...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the possibility of overflowing the u16 DACL size when performing operations on setposixaclentriesdacl a...

CVE-2026-40706

In NTFS-3G 2022.10.3 before 2026.2.25, a heap buffer overflow exists in ntfsbuildpermissionsposix in acls.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered on the READ path stat, readdir, open when...

CVE-2025-43786

Enumeration of ERC from object entry in Liferay Portal 7.4.0 through 7.4.3.128, and Liferay DXP 2024.Q3.0 through 2024.Q3.1, 2024.Q2.0 through 2024.Q2.13, 2024.Q1.1 through 2024.Q1.12, 2023.Q4.0 and 7.4 GA through update 92 allow attackers to determine existent ERC in the application by exploit t...

CVE-2024-56317

In Matter aka connectedhomeip or Project CHIP through 1.4.0.0, the WriteAcl function deletes all existing ACL entries first, and then attempts to recreate them based on user input. If input validation fails during decoding, the process stops, and no entries are restored by...

Samba 4.0.0 Bypass Restriction Vulnerability (CVE-2013-0172)

Samba 4.0.0 as an AD DC may provide authenticated users with write access to LDAP directory objects. Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier:...

Microsoft ACL Shortcomings

Hi @ll, the following is a substantially shortened version of and Windows NT supports access control for almost all its objects, "How Security Descriptors and Access Control Lists Work" and "How Permissions Work" provide a comprehensive and exhaustive explanation. "Access Control Lists" provides ...

389: denial of service when using certificate groups

see https://bugzilla.redhat.com/showbug.cgi?id=781519...

Design/Logic Flaw

Samba 4.0.x before 4.0.1, in certain Active Directory domain-controller configurations, does not properly interpret Access Control Entries that are based on an objectClass, which allows remote authenticated users to bypass intended restrictions on modifying LDAP directory objects by leveraging 1...

A Samba AD DC may provide authenticated users with

Description In AD, Access Control Entries can be assigned based on the objectClass of the object. If a user or a group the user is a member of has any access based on the objectClass, then that user has write access to that object. Additionally, if a user has write access to any attribute on the...

UBUNTU-CVE-2012-4289

epan/dissectors/packet-afp.c in the AFP dissector in Wireshark 1.4.x before 1.4.15, 1.6.x before 1.6.10, and 1.8.x before 1.8.2 allows remote attackers to cause a denial of service loop and CPU consumption via a large number of ACL entries...

CVE-2007-0968

CVE-2007-0968 affects Cisco Firewall Services Module (FWSM) prior to 2.3(4.7) and 3.x prior to 3.1(3.1). The issue is an improper evaluation of access control entries (ACE) in an ACL, allowing remote authenticated users to bypass intended protections. Connected sources confirm this is a vulnerabi...

CVE-2007-0968

Unspecified vulnerability in Cisco Firewall Services Module FWSM before 2.34.7 and 3.x before 3.13.1 causes the access control entries ACE in an ACL to be improperly evaluated, which allows remote authenticated users to bypass intended certain ACL protections...