CVE-2019-5595: Freebsd

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

In FreeBSD before 11.2-STABLE(r343782), 11.2-RELEASE-p9, 12.0-STABLE(r343781), and 12.0-RELEASE-p3, kernel callee-save registers are not properly sanitized before return from system calls, potentially allowing some kernel data used in the system call to be exposed.

Affected products

• Freebsd Freebsd: version 11.2 only; version 12.0 only

Published 2019-02-12. Last modified 2026-06-17.