{"id":"CVE-2022-49558","summary":"netfilter: nf_tables: double hook unregistration in netns path","details":"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]  \u003cTASK\u003e\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.","modified":"2026-04-02T08:27:42.327799Z","published":"2025-02-26T02:14:04.575Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49558.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82"},{"type":"WEB","url":"https://git.kernel.org/stable/c/86c0154f4c3a56c5db8b9dd09e3ce885382c2c19"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9c413a8c8bb49cc16796371805ecb260e885bb2b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a3940dcf552f2393d1e8f263b386593f98abe829"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b09e6ccf0d12f9356e8e3508d3e3dce126298538"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f9a43007d3f7ba76d5e7f9421094f00f2ef202f8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49558.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49558"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b110391d1e806167254d3c7ae5d637191d913175"},{"fixed":"b09e6ccf0d12f9356e8e3508d3e3dce126298538"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0a0e5d47670b753d3dbf88f3c77a97a30864d9bd"},{"fixed":"3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"767d1216bff82507c945e92fe719dff2083bb2f4"},{"fixed":"9c413a8c8bb49cc16796371805ecb260e885bb2b"},{"fixed":"a3940dcf552f2393d1e8f263b386593f98abe829"},{"fixed":"86c0154f4c3a56c5db8b9dd09e3ce885382c2c19"},{"fixed":"f9a43007d3f7ba76d5e7f9421094f00f2ef202f8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49558.json"}}],"schema_version":"1.7.5"}