What’s Vulnerable › Vulnerabilities

CVE-2018-19333

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-11-17 · updated 2026-06-17

Description

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

How to fix

Upgrade to a fixed version: Google gVisor 2018-11-01. Check the vendor advisory for mitigations.

References

• https://github.com/google/gvisor/commit/0e277a39c8b6f905e289b75e8ad0594e6b3562ca
• https://justi.cz/security/2018/11/14/gvisor-lpe.html
• https://github.com/google/gvisor/commit/0e277a39c8b6f905e289b75e8ad0594e6b3562ca
• https://justi.cz/security/2018/11/14/gvisor-lpe.html

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