net: bridge: fix use-after-free due to MST port state bypass

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DEBIAN-CVE-2025-40297

In the Linux kernel, the following vulnerability has been resolved: net: bridge: fix use-after-free due to MST port state bypass syzbot reported1 a use-after-free when deleting an expired fdb. It is due to a race condition between learning still happening and a port being deleted, after all its...

CVE-2025-40297

CVE-2025-40297 affects the Linux kernel network bridge code. A race between learning FDB entries and deleting a port can allow fdb learning when a port is being removed, due to MST bypassing the port state and VLAN filtering being disabled during deletion. The fix adds a check for the port’s VLAN...

CVE-2025-40297 net: bridge: fix use-after-free due to MST port state bypass

In the Linux kernel, the following vulnerability has been resolved: net: bridge: fix use-after-free due to MST port state bypass syzbot reported1 a use-after-free when deleting an expired fdb. It is due to a race condition between learning still happening and a port being deleted, after all its...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel that stems from an MST port state bypass that could lead to reuse after release...