CVE-2018-6555: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Linux Linux Kernel: before 4.17 (fixed in 4.17)

Published 2018-09-04. Last modified 2026-06-17.