information leak

The information leak tag on WindowsForum.com covers vulnerabilities and bugs that result in unintended disclosure of sensitive data, typically from kernel memory to userspace. A recent thread discusses CVE-2026-46159, a Linux kernel Btrfs information leak caused by a race condition in btrfs_ioctl_space_info, where uninitialized heap memory can be copied to userspace. While not a remote code execution flaw, such local information leaks can expose kernel data and are a concern for system administrators. The tag includes discussions of fixes, CVEs, and broader lessons about kernel security boundaries.