Bleidl

**Name of the Vulnerable Software and Affected Versions** Linux kernel versions prior to 4.5 **Description** The issue is related to the `check alu op` function in `kernel/bpf/verifier.c`, which allows local users to cause a denial of service or possibly have other unspecified impacts by leveraging incorrect sign extension. **Recommendations** For versions prior to 4.5, update to version 4.5 or later to resolve the issue.