CVE-2026-84042
A flaw was found in crun. When crun is built with libkrun and a container is started rootful with passt networking (krun.use_passt), crun can execute attacker-controlled payload from the container image with host root privileges. The issue is a regression in crun 1.29. It affects crun >= 1.29
- Published Sep 10, 2026
- CVSS 7.8 high
- 0.1% chance of exploitation in the next 30 days (EPSS)