CVE-2017-8890: Debian Linux

High severity, CVSS 7.8. EPSS: 1.4% chance of exploitation in the next 30 days.

The inet_csk_clone_lock function in net/ipv4/inet_connection_sock.c in the Linux kernel through 4.10.15 allows attackers to cause a denial of service (double free) or possibly have unspecified other impact by leveraging use of the accept system call.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• Linux Linux Kernel: before 3.2.89 (fixed in 3.2.89); from 3.3, before 3.10.106 (fixed in 3.10.106); from 3.11, before 3.16.44 (fixed in 3.16.44); from 3.17, before 3.18.56 (fixed in 3.18.56); from 3.19, before 4.1.42 (fixed in 4.1.42); from 4.2, before 4.4.71 (fixed in 4.4.71); …

Published 2017-05-10. Last modified 2026-06-17.