CVE-2019-5596

HIGH 8.8CVE-2019-5596 · Published 12/02/2019 · updated 17/06/2026

In short

CVE-2019-5596 is a HIGH (CVSS 8.8) vulnerability affecting freebsd (freebsd).
Chance of exploitation in the next 30 days (EPSS): 1.2%, higher than 68.9% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
freebsd freebsd	`= 11.2= 12.0`	No fix yet

Description

In FreeBSD 11.2-STABLE after r338618 and before r343786, 12.0-STABLE before r343781, and 12.0-RELEASE before 12.0-RELEASE-p3, a bug in the reference count implementation for UNIX domain sockets can cause a file structure to be incorrectly released potentially allowing a malicious local user to gain root privileges or escape from a jail.

References

packetstormsecurity.com/files/155790/FreeBSD-fd-Privilege-Escalation.html
security.freebsd.org/advisories/FreeBSD-SA-19:02.fd.asc · Patch

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