CVE-2026-43394

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can see from other callers, svc_xprt_create_from_sa()\ndoes not require the extra refcount.\n\nnfsd_nl_listener_set_doit() is always in the process context,\nsendmsg(), and current->cred does not go away.\n\nLet's use current_cred() in nfsd_nl_listener_set_doit()."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnfsd: Soluci\u00f3n a la fuga de referencia de cred en nfsd_nl_listener_set_doit().\n\nnfsd_nl_listener_set_doit() usa get_current_cred() sin put_cred().\n\nComo podemos ver de otros llamadores, svc_xprt_create_from_sa() no requiere el recuento de referencias extra.\n\nnfsd_nl_listener_set_doit() siempre est\u00e1 en el contexto del proceso, sendmsg(), y current -> cred no desaparece.\n\nUsemos current_cred() en nfsd_nl_listener_set_doit()."}], "id": "CVE-2026-43394", "lastModified": "2026-11-11T20:10:00.273", "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": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43394", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:36:52.935179Z", "version": "2.0.3"}}]}, "published": "2026-05-08T15:16:50.800", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/019debe5851d7355bea9ff0248cc317878924d8f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/02e87ec0bc706cb93fa47b43d18c4d10102c7d54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/92978c83bb4eef55d02a6c990c01c423131eefa7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cba413765376bb466035c9160fa3130402971e2c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: nfsd: Fix cred ref leak in nfsd_nl_listener_set_doit()", "id": "2468262", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468262"}, "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"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's nfsd component. The `nfsd_nl_listener_set_doit()` function fails to properly release credential references, resulting in a resource leak. This issue could allow a local attacker to exhaust system resources, potentially leading to a Denial of Service (DoS)."], "name": "CVE-2026-43394", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43394\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43394\nhttps://lore.kernel.org/linux-cve-announce/2026050837-CVE-2026-43394-974b@gregkh/T"], "threat_severity": "Moderate"}

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