CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's SELinux implementation, where a class can inherit permissions from a common but declare a smaller permission count, leading to an out-of-bounds heap write. This flaw could potentially allow attackers to exploit memory corruption issues, impacting system stability and security. Organizations using SELinux in their Linux environments should prioritize addressing this vulnerability to ensure the integrity of their security policies.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: selinux: reject a class permission count below its inherited common security_get_permissions() maps an inherited common's permissions into an array sized by the class's own permissions.nprim, but class_read() takes that nprim verbatim from the policy image and never checks that it covers the common. A class that inherits a common of N permissions while declaring a smaller nprim is accepted, and on load the common's permissions are written past the class-sized array -- an out-of-bounds heap write. Reject a class whose permission count is below its inherited common's. Well-formed policies, where the class count already includes the inherited permissions, are unaffected.