cve 2025 68378

CVE-2025-68378 is a Linux kernel vulnerability in the BPF stackmap handling that results from a missing boundary check, leading to a slab out-of-bounds write when copying stack trace entries into a stackmap bucket. Discovered by the Syzkaller fuzzing system and patched upstream by kernel BPF maintainers, this flaw poses availability and integrity risks. Affected systems require prompt kernel updates or mitigations where patching is delayed. The vulnerability is documented in public databases and should be treated seriously by administrators managing Linux-based environments.