CVE-2021-47358: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: staging: greybus: uart: fix tty use after free User space can hold a tty open indefinitely and tty drivers must not release the underlying structures until the last user is gone. Switch to using the tty-port reference counter to manage the life time of the greybus tty state to avoid use after free after a disconnect.

Affected products

• Linux Linux Kernel: from 4.9, 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 5.4.150 (fixed in 5.4.150); from 5.5, before 5.10.70 (fixed in 5.10.70); from 5.11, before 5.14.9 (fixed in 5.14.9); …

Published 2024-05-21. Last modified 2026-08-04.