acl: TOCTOU Symlink Traversal via getfacl/setfacl

A time-of-check to time-of-use TOCTOU race condition vulnerability was found in acl. By replacing a pathname component with a symbolic link between a security check and subsequent file operations, an attacker can redirect file access control list operations. This occurs when privileged processes...

acl: Symlink traversal privilege escalation via libacl functions

A flaw was found in the acl package, specifically within its libacl pathname-based functions. A local attacker could exploit this vulnerability by using a symbolic link to replace a pathname component. This could allow the attacker to redirect access control list ACL read or write operations to...

CVE-2026-64138

A flaw was found in the ksmbd module of the Linux kernel. This vulnerability arises from improper validation of Security Identifiers SIDs within the NT Security Descriptor smbntsd during Access Control List ACL inheritance. An attacker could exploit this to bypass intended security restrictions,...

CVE-2026-15812

A vulnerability was found in the internal Access Control List ACL subsystem of kronosnet Version affected: = 1.34. When the framework is explicitly configured to manage dynamic links accepting network traffic from any IP address without network payload encryption, the validation architecture...

CVE-2026-15812

CVE-2026-15812 affects kronosnet (

CVE-2026-53396

A flaw was found in the Linux kernel's Network File System NFS daemon nfsd within the nfsd4createfile function. This vulnerability allows a remote attacker to cause a denial of service DoS by repeatedly triggering a memory leak of posixacl allocations. The leak occurs when a client attempts to...

EUVD-2026-45823

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate SID in parent security descriptor during ACL inheritance Introduce smbvalidatentsdsid helper to safely validate Owner SID and Group SID inside the NT Security Descriptor smbntsd retrieved from the parent directory...

CVE-2026-63814

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate ACL entry sizes in f2fsaclfromdisk f2fsaclcount only validates the aggregate ACL xattr length. A malformed ACL can still place ACLUSER or ACLGROUP in a slot that only contains struct f2fsaclentryshort bytes, and...

CVE-2026-53395

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix dead ACL conflict guard in nfsd4create nfsd4create steals create-crdpacl/crpacl into the local nfsdattrs via the designated initializer, then immediately sets the source pointers to NULL. The subsequent conflict guard...

CVE-2026-63814

CVE-2026-63814 (Linux kernel, f2fs) is resolved. A malformed ACL in f2fs_acl_from_disk() could bypass proper length checks because f2fs_acl_count() only validates the aggregate ACL xattr length, allowing ACL_USER/ACL_GROUP entries to be read before a full entry fits. The fix adds checks: require ...

PT-2026-61100

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix dead ACL conflict guard in nfsd4 create nfsd4 create steals create-cr dpacl/cr pacl into the local nfsd attrs via the designated initializer, then immediately sets the source pointers to NULL. The subsequent conflict...

CVE-2026-12693

Authorization bypass through User-Controlled key vulnerability in Vimesoft Inc. Enterprise Video Platform allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Enterprise Video Platform: from 3.11.0.0 before 3.25.0...

EUVD-2026-45227

Authorization bypass through User-Controlled key vulnerability in Vimesoft Inc. Enterprise Video Platform allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Enterprise Video Platform: from 3.11.0.0 before 3.25.0...

CVE-2026-12693

The CVE-2026-12693 entry concerns an Identity/Authorization weakness in Vimesoft Inc.'s Enterprise Video Platform. Affected software: Enterprise Video Platform versions 3.11.0.0 up to, but not including, 3.25.0. The issue is an Authorization bypass via a User-Controlled key, leading to a lack of ...

CVE-2026-47082

CVE-2026-47082 affects Cyrus IMAP (cyrus-imapd) up to version 3.12.2. The vacation Sieve option :fcc ignores destination mailbox ACLs, allowing a user’s vacation auto-replies to be delivered to any mailbox named by the script, even if the user lacks insert permissions on that mailbox. The issue i...

CVE-2026-47084

CVE-2026-47084 affects Cyrus IMAPD up to version 3.12.2. The LOCALDELETE command bypassed ACL checks, allowing an authenticated but non-admin user to invoke an admin-only LOCALDELETE IMAP command and delete mailboxes for which they had no permissions. The CVSS metrics indicate a base score of 6.5...

[SECURITY] Fedora 43 Update: acl-2.4.0-1.fc43

This package contains the getfacl and setfacl utilities needed for manipulating access control lists...

CVE-2026-6280

Exposure of sensitive information due to incompatible policies vulnerability in NOMYSOFT Informatics Education and Consulting Inc. Nomysem allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Nomysem: through 08072026. NOTE: The vendor was contacted early about this...

acl: TOCTOU Symlink Traversal via getfacl/setfacl

A time-of-check to time-of-use TOCTOU race condition vulnerability was found in acl. By replacing a pathname component with a symbolic link between a security check and subsequent file operations, an attacker can redirect file access control list operations. This occurs when privileged processes...

Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: acl: acl-2.4.0-0.1.hum1 aarch64, x8664 libacl-2.4.0-0.1.hum1 aarch64, x8664 libacl-devel-2.4.0-0.1.hum1 aarch64, x8664 acl-2.4.0-0.1.hum1.src src Security Fixes: acl: CVE-2026-54369 CVE-2026-5437...