{"id":"CVE-2022-49558","state":"PUBLISHED","title":"netfilter: nf_tables: double hook unregistration in netns path","description":"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.","publishedAt":"2025-02-26T02:14:04.575Z","updatedAt":"2026-05-23T15:22:25.638Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b110391d1e806167254d3c7ae5d637191d913175","status":"affected","lessThan":"b09e6ccf0d12f9356e8e3508d3e3dce126298538","versionType":"git"},{"version":"0a0e5d47670b753d3dbf88f3c77a97a30864d9bd","status":"affected","lessThan":"3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82","versionType":"git"},{"version":"767d1216bff82507c945e92fe719dff2083bb2f4","status":"affected","lessThan":"9c413a8c8bb49cc16796371805ecb260e885bb2b","versionType":"git"},{"version":"767d1216bff82507c945e92fe719dff2083bb2f4","status":"affected","lessThan":"a3940dcf552f2393d1e8f263b386593f98abe829","versionType":"git"},{"version":"767d1216bff82507c945e92fe719dff2083bb2f4","status":"affected","lessThan":"86c0154f4c3a56c5db8b9dd09e3ce885382c2c19","versionType":"git"},{"version":"767d1216bff82507c945e92fe719dff2083bb2f4","status":"affected","lessThan":"f9a43007d3f7ba76d5e7f9421094f00f2ef202f8","versionType":"git"},{"version":"5.4.99","status":"affected","lessThan":"5.4.262","versionType":"semver"},{"version":"5.10.17","status":"affected","lessThan":"5.10.198","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","versionType":"semver"},{"version":"5.4.262","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.198","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.45","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.13","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.2","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"]}],"references":["https://git.kernel.org/stable/c/b09e6ccf0d12f9356e8e3508d3e3dce126298538","https://git.kernel.org/stable/c/3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82","https://git.kernel.org/stable/c/9c413a8c8bb49cc16796371805ecb260e885bb2b","https://git.kernel.org/stable/c/a3940dcf552f2393d1e8f263b386593f98abe829","https://git.kernel.org/stable/c/86c0154f4c3a56c5db8b9dd09e3ce885382c2c19","https://git.kernel.org/stable/c/f9a43007d3f7ba76d5e7f9421094f00f2ef202f8"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49558.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49558","state":"PUBLISHED","datePublished":"2025-02-26T02:14:04.575Z","dateUpdated":"2026-05-23T15:22:25.638Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:08:31.591Z"},"containers":{"cna":{"title":"netfilter: nf_tables: double hook unregistration in netns path","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b110391d1e806167254d3c7ae5d637191d913175","status":"affected","lessThan":"b09e6ccf0d12f9356e8e3508d3e3dce126298538","versionType":"git"},{"version":"0a0e5d47670b753d3dbf88f3c77a97a30864d9bd","status":"affected","lessThan":"3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82","versionType":"git"},{"version":"767d1216bff82507c945e92fe719dff2083bb2f4","status":"affected","lessThan":"9c413a8c8bb49cc16796371805ecb260e885bb2b","versionType":"git"},{"version":"767d1216bff82507c945e92fe719dff2083bb2f4","status":"affected","lessThan":"a3940dcf552f2393d1e8f263b386593f98abe829","versionType":"git"},{"version":"767d1216bff82507c945e92fe719dff2083bb2f4","status":"affected","lessThan":"86c0154f4c3a56c5db8b9dd09e3ce885382c2c19","versionType":"git"},{"version":"767d1216bff82507c945e92fe719dff2083bb2f4","status":"affected","lessThan":"f9a43007d3f7ba76d5e7f9421094f00f2ef202f8","versionType":"git"},{"version":"5.4.99","status":"affected","lessThan":"5.4.262","versionType":"semver"},{"version":"5.10.17","status":"affected","lessThan":"5.10.198","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","versionType":"semver"},{"version":"5.4.262","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.198","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.45","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.13","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.2","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b09e6ccf0d12f9356e8e3508d3e3dce126298538"},{"url":"https://git.kernel.org/stable/c/3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82"},{"url":"https://git.kernel.org/stable/c/9c413a8c8bb49cc16796371805ecb260e885bb2b"},{"url":"https://git.kernel.org/stable/c/a3940dcf552f2393d1e8f263b386593f98abe829"},{"url":"https://git.kernel.org/stable/c/86c0154f4c3a56c5db8b9dd09e3ce885382c2c19"},{"url":"https://git.kernel.org/stable/c/f9a43007d3f7ba76d5e7f9421094f00f2ef202f8"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:22:25.638Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.99","versionEndExcluding":"5.4.262"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.17","versionEndExcluding":"5.10.198"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.45"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.17.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.18.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}