PT-2024-4117 · Linux+2 · Linux Kernel+2
Lukas Wunner
·
Published
2024-04-10
·
Updated
2024-07-26
·
CVE-2024-27021
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a deadlock in the Linux kernel's r8169 driver, specifically with the
devm led classdev register() function. This deadlock occurs when the module is removed, causing a RTNL-related deadlock. The problem arises because binding devm led classdev register() to the netdev is problematic. To fix this, the device-managed LED functions are avoided. It is noted that led classdev unregister() can be safely called for a LED even if registering it failed, as it detects this and is a no-op in such cases.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu