NetSight
IP …
high7.8

CVE-2022-49672

In the Linux kernel, the following vulnerability has been resolved: net: tun: unlink NAPI from device on destruction Syzbot found a race between tun file and d…

Impact

In the Linux kernel, the following vulnerability has been resolved: net: tun: unlink NAPI from device on destruction Syzbot found a race between tun file and device destruction. NAPIs live in struct tun_file which can get destroyed before the netdev so we have to del them explicitly. The current code is missing deleting the NAPI if the queue was detached first.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.15 before 4.19.251
from 4.20 before 5.4.204
from 5.5 before 5.10.129
from 5.11 before 5.15.53
from 5.16 before 5.18.10
Version 5.19

References