CVE-2024-46702

MEDIUM

Linux Kernel - Denial of Service via Thunderbolt XDomain Router Removal

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Mark XDomain as unplugged when router is removed I noticed that when we do discrete host router NVM upgrade and it gets hot-removed from the PCIe side as a result of NVM firmware authentication, if there is another host connected with enabled paths we hang in tearing them down. This is due to fact that the Thunderbolt networking driver also tries to cleanup the paths and ends up blocking in tb_disconnect_xdomain_paths() waiting for the domain lock. However, at this point we already cleaned the paths in tb_stop() so there is really no need for tb_disconnect_xdomain_paths() to do that anymore. Furthermore it already checks if the XDomain is unplugged and bails out early so take advantage of that and mark the XDomain as unplugged when we remove the parent router.

Scores

CVSS v3 5.5
EPSS 0.0024
EPSS Percentile 14.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

Status published
Products (21)
linux/Kernel 3.17.0 - 5.10.225linux
linux/Kernel 5.11.0 - 5.15.166linux
linux/Kernel 5.16.0 - 6.1.107linux
linux/Kernel 6.2.0 - 6.6.48linux
linux/Kernel 6.7.0 - 6.10.7linux
Linux/Linux < 3.17
Linux/Linux 16603153666d22df544ae9f9b3764fd18da28eeb - 18b3ad2a3cc877dd4b16f48d84aa27b78d53bf1d
Linux/Linux 16603153666d22df544ae9f9b3764fd18da28eeb - 23ce6ba3b95488a2b9e9f6d43b340da0c15395dc
Linux/Linux 16603153666d22df544ae9f9b3764fd18da28eeb - 747bc154577de6e6af4bc99abfa859b8419bb4d8
Linux/Linux 16603153666d22df544ae9f9b3764fd18da28eeb - 7ca24cf9163c112bb6b580c6fb57c04a1f8b76e1
... and 11 more
Published Sep 13, 2024
Tracked Since Feb 18, 2026