CVE-2021-47123: 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: io_uring: fix ltout double free on completion race Always remove linked timeout on io_link_timeout_fn() from the master request link list, otherwise we may get use-after-free when first io_link_timeout_fn() puts linked timeout in the fail path, and then will be found and put on master's free.

Affected products

• Linux Linux Kernel: from 5.11, before 5.12.10 (fixed in 5.12.10); version 5.13 only

Published 2024-03-15. Last modified 2026-08-04.