CVE-2019-5611

HIGH

FreeBSD Remote DoS via IPv6 Stack (12.0-STABLE before r350828, 12.0-RELEASE before p10, etc.)

Title source: llm

Description

In FreeBSD 12.0-STABLE before r350828, 12.0-RELEASE before 12.0-RELEASE-p10, 11.3-STABLE before r350829, 11.3-RELEASE before 11.3-RELEASE-p3, and 11.2-RELEASE before 11.2-RELEASE-p14, a missing check in the function to arrange data in a chain of mbufs could cause data returned not to be contiguous. Extra checks in the IPv6 stack could catch the error condition and trigger a kernel panic, leading to a remote denial of service.

References (4)

Core 4

Core References

Patch, Vendor Advisory vendor-advisory x_refsource_freebsd

https://security.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.asc

Exploit, Mailing List, Patch, Third Party Advisory mailing-list x_refsource_bugtraq

https://seclists.org/bugtraq/2019/Aug/33

Exploit, Patch, Third Party Advisory, VDB Entry x_refsource_misc

http://packetstormsecurity.com/files/154170/FreeBSD-Security-Advisory-FreeBSD-SA-19-22.mbuf.html

Third Party Advisory x_refsource_confirm

https://security.netapp.com/advisory/ntap-20190910-0002/

Scores

CVSS v3 7.5

EPSS 0.0185

EPSS Percentile 83.3%

Attack Vector NETWORK

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

Details

CWE

CWE-20

Status published

Products (4)

freebsd/freebsd 11.2 (13 CPE variants)

freebsd/freebsd 11.3 (5 CPE variants)

freebsd/freebsd 12.0 (6 CPE variants)

netapp/clustered_data_ontap

Published Aug 30, 2019

Tracked Since Feb 18, 2026