FreeBSD 15.1-RC1 Released: Fixes With Now Seeing More AI-Discovered Security Issues
FreeBSD 15.1-RC1 has been released, addressing several security vulnerabilities identified through AI-driven research. The release includes important security fixes and improvements to existing tools. The official release is expected in June, pending further security discoveries.
- ▪FreeBSD 15.1-RC1 includes security mitigations for multiple advisories.
- ▪AI-driven tools have uncovered various vulnerabilities, including a kernel use-after-free and privilege escalation issues.
- ▪The release also features enhancements to the fwget firmware tool and bug fixes.
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FreeBSD 15.1-RC1 Released: Fixes With Now Seeing More AI-Discovered Security Issues Written by Michael Larabel in BSD on 22 May 2026 at 08:52 PM EDT. Add A Comment In addition to the recent influx of Linux security vulnerabilities affecting Linux, FreeBSD has also begun receiving security reports via AI/LLM-driven discovery tools. FreeBSD 15.1-RC1 is out today ahead of the planned official release in June and it brings a handful of security fixes out of this new AI-driven security research space. FreeBSD 15.1-RC1 ships with security mitigations for security advisories FreeBSD-SA-26:19 through FreeBSD-SA-26:24. AI-driven security research firm Calif.io along with other parties discovered a kernel use-after-free via file descriptor system calls.
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