PT-2025-49746 · Linux · Linux Kernel
Published
2025-12-09
·
Updated
2026-04-20
·
CVE-2023-53855
None
No severity ratings or metrics are available. When they are, we'll update the corresponding info on the page.
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.5.0-rc3+ #771
Description
The Linux kernel contains an issue where the
dsa tag 8021q unregister() function is called under rtnl lock() during driver removal when the tagging protocol is set to "ocelot-8021q". This can lead to a system crash, as demonstrated by assertions failing in net/dsa/tag 8021q.c and net/8021q/vlan core.c. The issue occurs during the unbinding process of the driver. The felix tag 8021q teardown() function does not require rtnl lock() to be held, making this a specific problem for the "ocelot-8021q" protocol.Recommendations
Update to Linux kernel version 6.5.0-rc3+ #771 or a later version to resolve this issue.
Exploit
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Linux Kernel