Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: In the net: bridge section, for the mcast function, it was decided to always update the mdbnEntries value for VLAN contexts. The syzbot triggered a warning1 regarding the number of mdb entries in a context. It turns out that ther...

EUVD-2026-32379

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: always update mdbnentries for vlan contexts syzbot triggered a warning1 about the number of mdb entries in a context. It turned out that there are multiple ways to trigger that warning today some got added...

CVE-2026-45913

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: always update mdbnentries for vlan contexts syzbot triggered a warning1 about the number of mdb entries in a context. It turned out that there are multiple ways to trigger that warning today some got added...

UBUNTU-CVE-2026-45913

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: always update mdbnentries for vlan contexts syzbot triggered a warning1 about the number of mdb entries in a context. It turned out that there are multiple ways to trigger that warning today some got added...

CVE-2026-45913

CVE-2026-45913 concerns the Linux kernel bridge multicast code where mdb_n_entries for VLAN contexts could be inconsistently updated, triggering kernel warnings. The fix standardizes counting by removing conditional increases and ensuring the counter is initialized on port-vlan context creation a...

CVE-2026-45913 net: bridge: mcast: always update mdb_n_entries for vlan contexts

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: always update mdbnentries for vlan contexts syzbot triggered a warning1 about the number of mdb entries in a context. It turned out that there are multiple ways to trigger that warning today some got added...

PT-2026-43780

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the bridge multicast component where the mdb n entries count for VLAN contexts is updated conditionally. This can lead to a state where a decrease operation is perform...

EUVD-2025-201647

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...

UBUNTU-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...

SUSE CVE-2022-49582

In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix NULL pointer dereference in dsaportresetvlanfiltering The "ds" iterator variable used in dsaportresetvlanfiltering - dsaswitchforeachport overwrites the "dp" received as argument, which is later used to call...