CVE-2019-5603

Name: CVE-2019-5603
Creator: NVD / NIST
Published: 2019-07-26T01:15:10.737+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2019-5603 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In FreeBSD 12.0-STABLE before r350261, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r350263, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, system calls operating on file descriptors as part of mqueuefs did not properly release the reference allowing a malicious user to overflow the counter allowing access to files, directories, and sockets opened by processes owned by other users.. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

In FreeBSD 12.0-STABLE before r350261, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r350263, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, system calls operating on file descriptors as part of mqueuefs did not properly release the reference allowing a malicious user to overflow the counter allowing access to files, directories, and sockets opened by processes owned by other users.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.62%

45.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-404

Affected Software

Vendor	Product	Versions
Freebsd	Freebsd	11.0
Freebsd	Freebsd	11.2
Freebsd	Freebsd	11.3
Freebsd	Freebsd	12.0

References

http://packetstormsecurity.com/files/153752/FreeBSD-Security-Advisory-FreeBSD-SA-19-15.mqueuefs.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/154172/FreeBSD-Security-Advisory-FreeBSD-SA-19-24.mqueuefs.htmlThird Party Advisory, VDB Entry
https://seclists.org/bugtraq/2019/Aug/35Broken Link
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:15.mqueuefs.ascVendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:24.mqueuefs.ascThird Party Advisory
https://security.netapp.com/advisory/ntap-20190814-0003/Third Party Advisory
http://packetstormsecurity.com/files/153752/FreeBSD-Security-Advisory-FreeBSD-SA-19-15.mqueuefs.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/154172/FreeBSD-Security-Advisory-FreeBSD-SA-19-24.mqueuefs.htmlThird Party Advisory, VDB Entry
https://seclists.org/bugtraq/2019/Aug/35Broken Link
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:15.mqueuefs.ascVendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:24.mqueuefs.ascThird Party Advisory
https://security.netapp.com/advisory/ntap-20190814-0003/Third Party Advisory

Timeline

Published: Jul 26, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-5603?

How severe is CVE-2019-5603?

CVE-2019-5603 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2019-5603?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST