CVE-2018-19333: Google Gvisor

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

pkg/sentry/kernel/shm/shm.go in Google gVisor before 2018-11-01 allows attackers to overwrite memory locations in processes running as root (but not escape the sandbox) via vectors involving IPC_RMID shmctl calls, because reference counting is mishandled.

Affected products

• Google Gvisor: before 2018-11-01 (fixed in 2018-11-01)

Published 2018-11-17. Last modified 2026-06-17.