CVE-2017-9074: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

The IPv6 fragmentation implementation in the Linux kernel through 4.11.1 does not consider that the nexthdr field may be associated with an invalid option, which allows local users to cause a denial of service (out-of-bounds read and BUG) or possibly have unspecified other impact via crafted socket and send system calls.

Affected products

• Linux Linux Kernel: before 3.2.89 (fixed in 3.2.89); from 3.3, 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); from 4.5, before 4.9.31 (fixed in 4.9.31); …

Published 2017-05-19. Last modified 2026-06-17.