CVE-2024-36009
kernel: ax25: Fix netdev refcount issue
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 20, 2024
Updated · October 21, 2026
Description
A vulnerability was found in the Linux kernel's AX.25 protocol implementation. The issue arises from incorrect handling of the netdev reference count, where the dev_tracker associated with the AX.25 device is improperly managed. Specifically, the dev_tracker of the ax25_cb should be deallocated during device detachment in the ax25_kill_by_device() function, but it was mistakenly tied to the ax25_dev. This mismanagement leads to a reference count mismatch, triggering warnings and potential system instability, as indicated by logs showing already released references.
Statement
Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-911 · Improper Update of Reference Count