PT-2025-31067 · Linux+5 · Linux Kernel+5
Published
2025-07-16
·
Updated
2026-04-20
·
CVE-2025-38470
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the Linux kernel related to VLAN 0 refcount management when toggling filtering during runtime with the "rx-vlan-filter" feature enabled. Specifically, a memory leak can occur when disabling the "rx-vlan-filter" feature while the device is running. Additionally, a null-pointer dereference or bug can be triggered if VLAN 0 is automatically deleted when the device is administratively down, despite not being added when the device was brought up with the filter disabled. This issue arises from improper handling of VLAN 0 reference counts during device state changes and filter toggling.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Memory Leak
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu