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-2026-23406

CVE-2026-23406 concerns the AppArmor Linux kernel module. The issue arises in the DFA matching logic used during file path checks, where the macro match_char() can evaluate its character parameter multiple times when traversing differential encoding chains. If invoked with *str++, the string poin...

CVE-2026-23404

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=...

CVE-2026-23404

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=...

CVE-2026-23404 apparmor: replace recursive profile removal with iterative approach

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=...

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-2026-23405 apparmor: fix: limit the number of levels of policy namespaces

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-2026-23405

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-2026-23404

CVE-2026-23404 affects the Linux kernel AppArmor profile management. The issue arises from recursive profile removal in the AppArmor code path; nested profiles could trigger deep recursion, risking kernel stack exhaustion and system crashes. The connected documents confirm the root cause is the r...

CVE-2026-23404 apparmor: replace recursive profile removal with iterative approach

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=...

CVE-2026-23405

CVE-2026-23405 concerns the Linux kernel AppArmor feature where policy namespaces could be nested arbitrarily deep, potentially exhausting system resources. The vulnerability arises because policy namespaces were not bounded by the user namespace depth, and are not strictly tied to user namespace...

CVE-2026-23405 apparmor: fix: limit the number of levels of policy namespaces

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-2026-23403

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...

CVE-2026-23403 apparmor: fix memory leak in verify_header

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...

CVE-2026-23403

CVE-2026-23403 concerns the AppArmor memory leak in Linux kernel’s verify_header. The issue arises because a function sets *ns = NULL on every call, leaking the previously allocated namespace string across successive profile unpackings and causing namespace consistency checks to see NULL for *ns....

CVE-2026-23403 apparmor: fix memory leak in verify_header

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...

CVE-2026-23403

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...

UBUNTU-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...

PT-2026-29487

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel's AppArmor profile removal code used a recursive approach for removing nested profiles, which could lead to kernel stack exhaustion and system crashes. The issue stemmed...

PT-2026-29491

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw within the apparmor subsystem related to a double free of ns name in the aa replace profiles function. Specifically, if ns name is NULL after unpacking...