CVE-2021-47403: Linux Kernel

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix module reference leak A reference to the carrier module was taken on every open but was only released once when the final reference to the tty struct was dropped. Fix this by taking the module reference and initialising the tty driver data when installing the tty.

Affected products

• Linux Linux Kernel: from 3.18, before 4.4.286 (fixed in 4.4.286); from 4.5, before 4.9.285 (fixed in 4.9.285); from 4.10, before 4.14.249 (fixed in 4.14.249); from 4.15, before 4.19.209 (fixed in 4.19.209); from 4.20, before 5.4.151 (fixed in 5.4.151); from 5.5, before 5.10.71 (fixed in 5.10.71); …

Published 2024-05-21. Last modified 2026-06-17.