CVE-2026-23411

A flaw was found in the Linux kernel's AppArmor security module. A race condition occurs when AppArmor incorrectly manages the lifecycle of iprivate data, leading to situations where data is freed while still being accessed by file system callback functions. This timing vulnerability can result i...

CVE-2026-23409

A flaw was found in AppArmor, a security module in the Linux kernel. This vulnerability occurs due to incorrect verification of differential encoding chains, which are designed to prevent malicious loops. An attacker could exploit this flaw by crafting a specially designed differential encoding...

CVE-2026-23405

A flaw was found in the AppArmor security module within the Linux kernel. A local user could exploit this vulnerability by creating and nesting policy namespaces without limit. This unbounded nesting can lead to the exhaustion of system resources, resulting in a Denial of Service DoS for the...

CVE-2026-23404

A flaw was found in the Linux kernel's AppArmor security module. A local user could trigger a denial of service by initiating a recursive profile removal operation with deeply nested profiles. This recursive process can lead to kernel stack exhaustion, causing the system to crash...

CVE-2026-23410

A flaw was found in the Linux kernel's AppArmor security module. This vulnerability, a race condition, allows a local attacker to trigger a use-after-free error by simultaneously opening rawdata files and removing an associated AppArmor profile. This can lead to the system accessing freed memory,...

EUVD-2026-17841

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix race on rawdata dereference There is a race condition that leads to a use-after-free situation: because the rawdata inodes are not refcounted, an attacker can start opening one of the rawdata files, and at the same...

EUVD-2026-17843

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix race between freeing data and fs accessing it AppArmor was putting the reference to iprivate data on its end after removing the original entry from the file system. However the inode can aand does live beyond that...

EUVD-2026-17839

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix differential encoding verification Differential encoding allows loops to be created if it is abused. To prevent this the unpack should verify that a diff-encode chain terminates. Unfortunately the differential encod...

EUVD-2026-17837

In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix double free of nsname in aareplaceprofiles if nsname is NULL after 1071 error = aaunpackudata, &lh, &nsname; and if ent-nsname contains an nsname in 1089 else if ent-nsname then nsname is assigned the ent-nsname 109...

EUVD-2026-17834

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix side-effect bug in matchchar macro usage The matchchar macro evaluates its character parameter multiple times when traversing differential encoding chains. When invoked with str++, the string pointer advances on eac...

EUVD-2026-17831

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix memory leak in verifyheader The function sets ns = NULL on every call, leaking the namespace string allocated in previous iterations when multiple profiles are unpacked. This also breaks namespace consistency checki...

EUVD-2026-17832

In the Linux kernel, the following vulnerability has been resolved: apparmor: replace recursive profile removal with iterative approach The profile removal code uses recursion when removing nested profiles, which can lead to kernel stack exhaustion and system crashes. Reproducer: $ pf='a'; for i=...

EUVD-2026-17833

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

EUVD-2026-17835

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix missing bounds check on DEFAULT table in verifydfa The verifydfa function only checks DEFAULTTABLE bounds when the state is not differentially encoded. When the verification loop traverses the differential encoding...

CVE-2026-23410

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix race on rawdata dereference There is a race condition that leads to a use-after-free situation: because the rawdata inodes are not refcounted, an attacker can start opening one of the rawdata files, and at the same...

CVE-2026-23411

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix race between freeing data and fs accessing it AppArmor was putting the reference to iprivate data on its end after removing the original entry from the file system. However the inode can aand does live beyond that...

CVE-2026-23409

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix differential encoding verification Differential encoding allows loops to be created if it is abused. To prevent this the unpack should verify that a diff-encode chain terminates. Unfortunately the differential encod...

CVE-2026-23406

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix side-effect bug in matchchar macro usage The matchchar macro evaluates its character parameter multiple times when traversing differential encoding chains. When invoked with str++, the string pointer advances on eac...

CVE-2026-23405

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix: limit the number of levels of policy namespaces Currently the number of policy namespaces is not bounded relying on the user namespace limit. However policy namespaces aren't strictly tied to user namespaces and it...

CVE-2026-23408

In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix double free of nsname in aareplaceprofiles if nsname is NULL after 1071 error = aaunpackudata, &lh, &nsname; and if ent-nsname contains an nsname in 1089 else if ent-nsname then nsname is assigned the ent-nsname 109...