CVE-2022-3910: Linux Kernel

High severity, CVSS 7.8. EPSS: 1.1% chance of exploitation in the next 30 days.

Use After Free vulnerability in Linux Kernel allows Privilege Escalation. An improper Update of Reference Count in io_uring leads to Use-After-Free and Local Privilege Escalation. When io_msg_ring was invoked with a fixed file, it called io_fput_file() which improperly decreased its reference count (leading to Use-After-Free and Local Privilege Escalation). Fixed files are permanently registered to the ring, and should not be put separately. We recommend upgrading past commit https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679 https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679

Affected products

• Linux Linux Kernel: from 5.18, before 5.19.11 (fixed in 5.19.11); version 6.0 only

Published 2022-11-22. Last modified 2026-06-17.