{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49558", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.591Z", "datePublished": "2025-02-26T02:14:04.575Z", "dateUpdated": "2025-06-19T12:39:10.625Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-06-19T12:39:10.625Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/nf_tables_api.c"], "versions": [{"version": "b110391d1e806167254d3c7ae5d637191d913175", "lessThan": "b09e6ccf0d12f9356e8e3508d3e3dce126298538", "status": "affected", "versionType": "git"}, {"version": "0a0e5d47670b753d3dbf88f3c77a97a30864d9bd", "lessThan": "3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82", "status": "affected", "versionType": "git"}, {"version": "767d1216bff82507c945e92fe719dff2083bb2f4", "lessThan": "9c413a8c8bb49cc16796371805ecb260e885bb2b", "status": "affected", "versionType": "git"}, {"version": "767d1216bff82507c945e92fe719dff2083bb2f4", "lessThan": "a3940dcf552f2393d1e8f263b386593f98abe829", "status": "affected", "versionType": "git"}, {"version": "767d1216bff82507c945e92fe719dff2083bb2f4", "lessThan": "86c0154f4c3a56c5db8b9dd09e3ce885382c2c19", "status": "affected", "versionType": "git"}, {"version": "767d1216bff82507c945e92fe719dff2083bb2f4", "lessThan": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/nf_tables_api.c"], "versions": [{"version": "5.11", "status": "affected"}, {"version": "0", "lessThan": "5.11", "status": "unaffected", 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"https://git.kernel.org/stable/c/86c0154f4c3a56c5db8b9dd09e3ce885382c2c19"}, {"url": "https://git.kernel.org/stable/c/f9a43007d3f7ba76d5e7f9421094f00f2ef202f8"}], "title": "netfilter: nf_tables: double hook unregistration in netns path", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2A386400-8B07-475B-8E43-2D78D035BCD3", "versionEndExcluding": "5.4.262", "versionStartIncluding": "5.4.99", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D163C268-AD8E-4A69-96DC-6CFC93EFCFD7", "versionEndExcluding": "5.10.198", "versionStartIncluding": "5.10.17", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4E4DAD3C-EABD-40B6-B5CB-9FF63F1A5EE1", "versionEndExcluding": "5.15.45", "versionStartIncluding": "5.11.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "192FC54B-5367-49D6-B410-0285F14665B1", "versionEndExcluding": "5.17.13", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9FF255A1-64F4-4E31-AF44-C92FB8773BA2", "versionEndExcluding": "5.18.2", "versionStartIncluding": "5.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.11:-:*:*:*:*:*:*", "matchCriteriaId": "7AD3510E-E8FA-47F3-9AD5-D8EA4A2719D1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2022-49558", "lastModified": "2025-10-22T17:26:55.440", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}]}, "published": "2025-02-26T07:01:31.597", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/86c0154f4c3a56c5db8b9dd09e3ce885382c2c19"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9c413a8c8bb49cc16796371805ecb260e885bb2b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a3940dcf552f2393d1e8f263b386593f98abe829"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b09e6ccf0d12f9356e8e3508d3e3dce126298538"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f9a43007d3f7ba76d5e7f9421094f00f2ef202f8"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: netfilter: nf_tables: double hook unregistration in netns path", "id": "2347790", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347790"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nf_tables: double hook unregistration in netns path\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[ 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\nUnregister and destroy netdev hook from netns pre_exit via kfree_rcu\nso the NETDEV_UNREGISTER path see unregistered hooks."], "name": "CVE-2022-49558", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49558\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49558\nhttps://lore.kernel.org/linux-cve-announce/2025022617-CVE-2022-49558-f8ba@gregkh/T"], "threat_severity": "Moderate"}