CVE-2026-110714 libsmb2 through 6.2 Heap Out-of-Bounds Read via decode_acl Integer Underflow

libsmb2 through 6.2 contains an integer underflow vulnerability in decodeacl that allows malicious SMB servers to trigger heap out-of-bounds reads via crafted security descriptors. Attackers controlling a server or intercepting unsigned sessions can send an AclSize below 8 in a QUERYINFO reply,...

PT-2026-114116

Name of the Vulnerable Software and Affected Versions libsmb2 versions prior to 6.2 Description An integer underflow exists in the decode acl function. This allows malicious SMB servers or attackers intercepting unsigned sessions to trigger heap out-of-bounds reads by sending a crafted security...

UBUNTU-CVE-2026-98114

In the Linux kernel, the following vulnerability has been resolved: ksmbd: propagate DACL parsing errors parsedacl silently accepts truncated ACEs and allocation failures, allowing setinfosec to continue with an incomplete ACL conversion. Return parsing and allocation errors to parsesecdesc so...

CVE-2026-98114

A vulnerability in the Linux kernel 's ksmbd component was identified where the parse_dacl() function silently accepts truncated ACEs and allocation failures. This allows set_info_sec() to proceed with incomplete ACL conversions, potentially leading to improper permission handling. The issue was ...

CVE-2026-98114 ksmbd: propagate DACL parsing errors

In the Linux kernel, the following vulnerability has been resolved: ksmbd: propagate DACL parsing errors parsedacl silently accepts truncated ACEs and allocation failures, allowing setinfosec to continue with an incomplete ACL conversion. Return parsing and allocation errors to parsesecdesc so...

CVE-2026-98114 ksmbd: propagate DACL parsing errors

In the Linux kernel, the following vulnerability has been resolved: ksmbd: propagate DACL parsing errors parsedacl silently accepts truncated ACEs and allocation failures, allowing setinfosec to continue with an incomplete ACL conversion. Return parsing and allocation errors to parsesecdesc so...

Linux Kernel Security Vulnerabilities

The Linux kernel version 5.15 contains a security vulnerability. This vulnerability stems from the silent acceptance of truncated ACEs by parsedacl, which leads to failed assignments. As a result, setinfosec continues to process incomplete ACL transformations. This may allow format-errors in...

CVE-2025-27464

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. The...

CVE-2025-27464

CVE-2025-27464 is part of a XenServer/Citrix Hypervisor set of flaws affecting Windows guest VMs. The root cause is that the XenServer VM Tools for Windows (XenServer VM Tools, Windows) before version 9.4.1 expose devices/facilities without proper security descriptors, enabling an unprivileged gu...

CVE-2025-27463

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. The...

CVE-2025-27463 WinPVDrivers: Excessive permissions on user-exposed devices

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. The Windows PV drivers expose various facilities to userspace. Several of these have no security descriptor, and are therefore fully accessible to unprivileged users. The...

📄 FIFOFox: Windows Named-Pipe Weak Permission and Access Control Validation

This C-based framework analyzes Windows named pipes for insecure permission configurations and weak access controls that could introduce privilege boundary issues. The code collects metadata about target pipes, inspects security descriptors and DACL configurations, checks for potentially unsafe...

Linux Kernel Security Vulnerabilities

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the ksmbd module’s handling of the QUERYINFOSecurity composite request. This vulnerability may le...

ALPINE-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...

USN-8192-1 ntfs-3g vulnerabilities

Jeffrey Bencteux discovered that NTFS-3G incorrectly handled certain UTF-8 sequences. An attacker could use this issue to cause NTFS-3G to crash, resulting in a denial of service, or to execute arbitrary code. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. CVE-2023-52890 Andrea...

EUVD-2005-3176

Malware in sbrugna...

CVE-2005-3177

CHKDSK in Microsoft Windows 2000 before Update Rollup 1 for SP4, Windows XP, and Windows Server 2003, when running in fix mode, does not properly handle security descriptors if the master file table contains a large number of files or if the descriptors do not satisfy certain NTFS conventions,...

SUSE CVE-2004-1154

Integer overflow in the Samba daemon smbd in Samba 2.x and 3.0.x through 3.0.9 allows remote authenticated users to cause a denial of service application crash and possibly execute arbitrary code via a Samba request with a large number of security descriptors that triggers a heap-based buffer...

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 ...

FF Sandbox Escape (CVE-2020-12388)

By James Forshaw, Project Zero In my previous blog post I discussed an issue with the Windows Kernel’s handling of Restricted Tokens which allowed me to escape the Chrome GPU sandbox. Originally I’d planned to use Firefox for the proof-of-concept as Firefox uses the same effective sandbox level a...