What is the severity of CVE-2019-5606?

CVE-2019-5606 has a medium severity rating, indicating potential risk to system security.

How do I fix CVE-2019-5606?

To remediate CVE-2019-5606, upgrade FreeBSD to version 12.0-RELEASE-p8, 11.3-RELEASE-p1, or 11.2-RELEASE-p12 or later.

What versions of FreeBSD are affected by CVE-2019-5606?

CVE-2019-5606 affects FreeBSD versions 11.0, 11.2, 11.3, and 12.0 prior to specific patch releases.

What types of systems are impacted by CVE-2019-5606?

CVE-2019-5606 affects systems running FreeBSD which utilize posix_openpt for descriptor handling.

What are the consequences of not addressing CVE-2019-5606?

Failing to address CVE-2019-5606 may lead to unstable system behavior and potential security vulnerabilities.

Vulnerability/
CVE-2019-5606

high

7.8

CWE

416

26/7/2019

4/8/2024

CVE-2019-5606: Use After Free

First published: Fri Jul 26 2019(Updated: )

In FreeBSD 12.0-STABLE before r349805, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r349806, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, code which handles close of a descriptor created by posix_openpt fails to undo a signal configuration. This causes an incorrect signal to be raised leading to a write after free of kernel memory allowing a malicious user to gain root privileges or escape a jail.

Credit: secteam@freebsd.org

Affected Software	Affected Version	How to fix
FreeBSD Kernel	=11.0
FreeBSD Kernel	=11.2
FreeBSD Kernel	=11.3
FreeBSD Kernel	=12.0

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Frequently Asked Questions

What is the severity of CVE-2019-5606?
CVE-2019-5606 has a medium severity rating, indicating potential risk to system security.
How do I fix CVE-2019-5606?
To remediate CVE-2019-5606, upgrade FreeBSD to version 12.0-RELEASE-p8, 11.3-RELEASE-p1, or 11.2-RELEASE-p12 or later.
What versions of FreeBSD are affected by CVE-2019-5606?
CVE-2019-5606 affects FreeBSD versions 11.0, 11.2, 11.3, and 12.0 prior to specific patch releases.
What types of systems are impacted by CVE-2019-5606?
CVE-2019-5606 affects systems running FreeBSD which utilize posix_openpt for descriptor handling.
What are the consequences of not addressing CVE-2019-5606?
Failing to address CVE-2019-5606 may lead to unstable system behavior and potential security vulnerabilities.

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agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/author
agent/severity
agent/weakness
agent/references
agent/event
agent/description
agent/first-publish-date
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/freebsd
canonical/freebsd kernel
version/freebsd kernel/11.0
version/freebsd kernel/11.2
version/freebsd kernel/11.3
version/freebsd kernel/12.0

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