CVE-2022-49558

{"id": "CVE-2022-49558", "cveTags": [], "metrics": {}, "published": "2025-02-26T07:01:31.597", "references": [{"url": "https://git.kernel.org/stable/c/3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/86c0154f4c3a56c5db8b9dd09e3ce885382c2c19", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9c413a8c8bb49cc16796371805ecb260e885bb2b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a3940dcf552f2393d1e8f263b386593f98abe829", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b09e6ccf0d12f9356e8e3508d3e3dce126298538", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f9a43007d3f7ba76d5e7f9421094f00f2ef202f8", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: double hook unregistration in netns path\n\n__nft_release_hooks() is called from pre_netns exit path which\nunregisters the hooks, then the NETDEV_UNREGISTER event is triggered\nwhich unregisters the hooks again.\n\n[ 565.221461] WARNING: CPU: 18 PID: 193 at net/netfilter/core.c:495 __nf_unregister_net_hook+0x247/0x270\n[...]\n[ 565.246890] CPU: 18 PID: 193 Comm: kworker/u64:1 Tainted: G E 5.18.0-rc7+ #27\n[ 565.253682] Workqueue: netns cleanup_net\n[ 565.257059] RIP: 0010:__nf_unregister_net_hook+0x247/0x270\n[...]\n[ 565.297120] Call Trace:\n[ 565.300900] <TASK>\n[ 565.304683] nf_tables_flowtable_event+0x16a/0x220 [nf_tables]\n[ 565.308518] raw_notifier_call_chain+0x63/0x80\n[ 565.312386] unregister_netdevice_many+0x54f/0xb50\n\nUnregister and destroy netdev hook from netns pre_exit via kfree_rcu\nso the NETDEV_UNREGISTER path see unregistered hooks."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nf_tables: doble anulaci\u00f3n del registro de gancho en la ruta netns __nft_release_hooks() se llama desde la ruta de salida pre_netns, lo que anula el registro de los ganchos; luego, se activa el evento NETDEV_UNREGISTER, que anula el registro de los ganchos nuevamente. [ 565.221461] WARNING: CPU: 18 PID: 193 at net/netfilter/core.c:495 __nf_unregister_net_hook+0x247/0x270 [...] [ 565.246890] CPU: 18 PID: 193 Comm: kworker/u64:1 Tainted: G E 5.18.0-rc7+ #27 [ 565.253682] Workqueue: netns cleanup_net [ 565.257059] RIP: 0010:__nf_unregister_net_hook+0x247/0x270 [...] [ 565.297120] Call Trace: [ 565.300900] [ 565.304683] nf_tables_flowtable_event+0x16a/0x220 [nf_tables] [ 565.308518] raw_notifier_call_chain+0x63/0x80 [ 565.312386] unregister_netdevice_many+0x54f/0xb50 Anule el registro y destruya el gancho netdev de netns pre_exit a trav\u00e9s de kfree_rcu para que la ruta NETDEV_UNREGISTER vea los ganchos no registrados."}], "lastModified": "2025-06-19T13:15:23.990", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}