CVE-2026-43060

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nft_ct: drop pending enqueued packets on removal\n\nPackets sitting in nfqueue might hold a reference to:\n\n- templates that specify the conntrack zone, because a percpu area is\n used and module removal is possible.\n- conntrack timeout policies and helper, where object removal leave\n a stale reference.\n\nSince these objects can just go away, drop enqueued packets to avoid\nstale reference to them.\n\nIf there is a need for finer grain removal, this logic can be revisited\nto make selective packet drop upon dependencies."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnetfilter: nft_ct: descartar paquetes pendientes en cola al eliminar\n\nLos paquetes que residen en nfqueue podr\u00edan mantener una referencia a:\n\n- plantillas que especifican la zona conntrack, porque se utiliza un \u00e1rea percpu y la eliminaci\u00f3n del m\u00f3dulo es posible.\n- pol\u00edticas de tiempo de espera de conntrack y el ayudante, donde la eliminaci\u00f3n de objetos deja una referencia obsoleta.\n\nDado que estos objetos pueden simplemente desaparecer, se descartan los paquetes en cola para evitar referencias obsoletas a ellos.\n\nSi existe la necesidad de una eliminaci\u00f3n m\u00e1s granular, esta l\u00f3gica puede ser revisada para realizar un descarte selectivo de paquetes seg\u00fan las dependencias."}], "id": "CVE-2026-43060", "lastModified": "2026-11-11T21:10:00.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43060", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:14:09.661568Z", "version": "2.0.3"}}]}, "published": "2026-05-05T16:16:15.050", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36eae0956f659e48d5366d9b083d9417f3263ddc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3da0b946835f33bf36b459ead764c61a761e689b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6802ff8beceb9c4254318e81c1395720438f2cc2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/77da55dee67720e2b8d2db49a53334e6c017ee7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8a64e76933672b08bd85b63086f33432070fd729"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ab50302190b303f847c4eba0e31a01a56dec596e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e68a8db3a0546482b34e9ca5ca886bcf73eb37bb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f29a055e4f593e577805b41228b142b58f48df1b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: netfilter: nft_ct: drop pending enqueued packets on removal", "id": "2466803", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466803"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's netfilter (nft_ct) component. When the nft_ct module is removed, packets still enqueued in the nfqueue might retain outdated references to connection tracking (conntrack) zone templates or timeout policies. This can lead to stale references, potentially causing system instability or a denial of service (DoS) if the referenced objects are no longer available."], "name": "CVE-2026-43060", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43060\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43060\nhttps://lore.kernel.org/linux-cve-announce/2026050537-CVE-2026-43060-f42f@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e0b2b57f01d183e1c84114f1f2287737358d748,8a64e76933672b08bd85b63086f33432070fd729)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e0b2b57f01d183e1c84114f1f2287737358d748,3da0b946835f33bf36b459ead764c61a761e689b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e0b2b57f01d183e1c84114f1f2287737358d748,ab50302190b303f847c4eba0e31a01a56dec596e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e0b2b57f01d183e1c84114f1f2287737358d748,e68a8db3a0546482b34e9ca5ca886bcf73eb37bb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e0b2b57f01d183e1c84114f1f2287737358d748,6802ff8beceb9c4254318e81c1395720438f2cc2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e0b2b57f01d183e1c84114f1f2287737358d748,f29a055e4f593e577805b41228b142b58f48df1b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e0b2b57f01d183e1c84114f1f2287737358d748,77da55dee67720e2b8d2db49a53334e6c017ee7b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7e0b2b57f01d183e1c84114f1f2287737358d748,36eae0956f659e48d5366d9b083d9417f3263ddc)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.253,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.203,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.167,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.130,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.78,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.20,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.10,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-05T18:00:12.708677+00:00", "updated": "2026-10-19T22:45:04.826877+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416", "CWE-825"]}