Description
In the Linux kernel, the following vulnerability has been resolved: hsr: broadcast netlink notifications in the device's net namespace The HSR generic netlink family sets .netnsok = true. HSR devices can live in network namespaces other than init_net. Two async notifiers broadcast events with genlmsg_multicast(). They are hsr_nl_ringerror() and hsr_nl_nodedown(). That helper delivers only on the default genl socket in init_net. So the events always land in init_net. The network namespace of the device does not matter. This has two effects. A listener in the device's own namespace never sees its own ring error and node down events. A privileged listener in init_net receives events from HSR devices in other namespaces. The payload carries the peer node MAC (HSR_A_NODE_ADDR) and the slave port ifindex (HSR_A_IFINDEX). Switch both callers to genlmsg_multicast_netns(). Other families with .netnsok = true already do this. Examples are gtp, ovpn, team, batman-adv, netdev-genl, ethtool and handshake. hsr_nl_ringerror() already has the slave port. It uses dev_net(port->dev). hsr_nl_nodedown() takes the namespace from the master port via hsr_port_get_hsr().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
f421436a591d34fa5279b54a96ac07d70250cc8d to < 9f13023607f1e95bd098cc49052b0c8955d334f9affectedf421436a591d34fa5279b54a96ac07d70250cc8d to < 798ccb12810a58a37264685b28ddf990ef49559caffectedf421436a591d34fa5279b54a96ac07d70250cc8d to < 9bf45feee630be868ab54e3d0f3d430c07471f0eaffectedf421436a591d34fa5279b54a96ac07d70250cc8d to < 016b8eaca53bfd57e84ea28b5c9174c89d7679e1affectedf421436a591d34fa5279b54a96ac07d70250cc8d to < 25b69f281cebe051a8e4ab19950a939c27ead1bcaffectedf421436a591d34fa5279b54a96ac07d70250cc8d to < 24b3f1a9982c176d05a523a4bb9314dca0db4488affectedf421436a591d34fa5279b54a96ac07d70250cc8d to < a762fabd7ef9a6cc07258684138f9c3f078d0326affected
Linux Linux
Default version status: affected
3.13affected0 to < 3.13unaffected5.10.271 to ≤ 5.10.*unaffected5.15.222 to ≤ 5.15.*unaffected6.1.189 to ≤ 6.1.*unaffected6.6.158 to ≤ 6.6.*unaffected6.12.111 to ≤ 6.12.*unaffected6.18.53 to ≤ 6.18.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/9f13023607f1e95bd098cc49052b0c8955d334f9 ↗
- https://git.kernel.org/stable/c/798ccb12810a58a37264685b28ddf990ef49559c ↗
- https://git.kernel.org/stable/c/9bf45feee630be868ab54e3d0f3d430c07471f0e ↗
- https://git.kernel.org/stable/c/016b8eaca53bfd57e84ea28b5c9174c89d7679e1 ↗
- https://git.kernel.org/stable/c/25b69f281cebe051a8e4ab19950a939c27ead1bc ↗
- https://git.kernel.org/stable/c/24b3f1a9982c176d05a523a4bb9314dca0db4488 ↗
- https://git.kernel.org/stable/c/a762fabd7ef9a6cc07258684138f9c3f078d0326 ↗