CVE-2016-4429: Canonical Ubuntu Linux

Medium severity, CVSS 5.9. EPSS: 4.5% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the clntudp_call function in sunrpc/clnt_udp.c in the GNU C Library (aka glibc or libc6) allows remote servers to cause a denial of service (crash) or possibly unspecified other impact via a flood of crafted ICMP and UDP packets.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only
• GNU Glibc: before 2.24 (fixed in 2.24)
• Opensuse Leap: version 42.1 only
• Opensuse Opensuse: version 13.2 only

Published 2016-06-10. Last modified 2026-06-17.