What’s Vulnerable › Vulnerabilities

CVE-2019-5595

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-02-12 · updated 2026-06-17
• Weakness: CWE-459

Description

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: 11.2, 12.0

References

• https://security.FreeBSD.org/advisories/FreeBSD-SA-19:01.syscall.asc
• https://exchange.xforce.ibmcloud.com/vulnerabilities/156624
• https://security.FreeBSD.org/advisories/FreeBSD-SA-19:01.syscall.asc

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