CVE-2016-1887

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2016-05-25 · updated 2026-06-17
Weakness: CWE-264

Description

Integer signedness error in the sockargs function in sys/kern/uipc_syscalls.c in FreeBSD 10.1 before p34, 10.2 before p17, and 10.3 before p3 allows local users to cause a denial of service (memory overwrite and kernel panic) or gain privileges via a negative buflen argument, which triggers a heap-based buffer overflow.

Affected products

FreeBSD: 10.1, 10.2, 10.3

References

http://cturt.github.io/sendmsg.html
http://www.securitytracker.com/id/1035906
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:19.sendmsg.asc
http://cturt.github.io/sendmsg.html
http://www.securitytracker.com/id/1035906
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:19.sendmsg.asc

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