{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-47711", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2025-05-07T21:08:45.449Z", "datePublished": "2025-06-09T06:03:47.063Z", "dateUpdated": "2026-01-08T03:36:41.352Z"}, "containers": {"cna": {"title": "Nbdkit: nbdkit-server: off-by-one error when processing block status may lead to a denial of service", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service."}], "affected": [{"versions": [{"status": "affected", "version": "1.11.10", "lessThan": "1.38.6", "versionType": "semver"}, {"status": "affected", "version": "1.40.0", "lessThan": "1.40.6", "versionType": "semver"}, {"status": "affected", "version": "1.42.0", "lessThan": "1.42.3", "versionType": "semver"}], "packageName": "nbdkit", "collectionURL": "https://nbdkit.org/", "defaultStatus": "unaffected"}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "nbdkit", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:10"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "nbdkit", "defaultStatus": "unknown", "cpes": ["cpe:/o:redhat:enterprise_linux:7"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "virt:rhel/nbdkit", "defaultStatus": "unknown", "cpes": ["cpe:/o:redhat:enterprise_linux:8"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8 Advanced Virtualization", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "virt:8.2/nbdkit", "defaultStatus": "unknown", "cpes": ["cpe:/a:redhat:advanced_virtualization:8::el8"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8 Advanced Virtualization", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "virt:av/nbdkit", "defaultStatus": "unknown", "cpes": ["cpe:/a:redhat:advanced_virtualization:8::el8"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "nbdkit", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:9"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2025-47711", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2365687", "name": "RHBZ#2365687", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2025-04-23T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-193", "description": "Off-by-one Error", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-193: Off-by-one Error", "timeline": [{"lang": "en", "time": "2025-05-12T16:59:09.026Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2025-04-23T00:00:00.000Z", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-01-08T03:36:41.352Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-06-09T18:19:38.672467Z", "id": "CVE-2025-47711", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-06-09T18:19:57.680Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-47711", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-06-09T18:19:38.672467Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-06-09T18:19:52.080Z"}}], "cna": {"title": "Nbdkit: nbdkit-server: off-by-one error when processing block status may lead to a denial of service", "metrics": [{"other": {"type": "Red Hat severity rating", "content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}], "affected": [{"versions": [{"status": "affected", "version": "1.11.10", "lessThan": "1.38.6", "versionType": "semver"}, {"status": "affected", "version": "1.40.0", "lessThan": "1.40.6", "versionType": "semver"}, {"status": "affected", "version": "1.42.0", "lessThan": "1.42.3", "versionType": "semver"}], "packageName": "nbdkit", "collectionURL": "https://nbdkit.org/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:10"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "packageName": "nbdkit", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "packageName": "nbdkit", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": "virt:rhel/nbdkit", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/a:redhat:advanced_virtualization:8::el8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8 Advanced Virtualization", "packageName": "virt:8.2/nbdkit", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/a:redhat:advanced_virtualization:8::el8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8 Advanced Virtualization", "packageName": "virt:av/nbdkit", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "packageName": "nbdkit", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}], "timeline": [{"lang": "en", "time": "2025-05-12T16:59:09.026Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2025-04-23T00:00:00.000Z", "value": "Made public."}], "datePublic": "2025-04-23T00:00:00.000Z", "references": [{"url": "https://access.redhat.com/security/cve/CVE-2025-47711", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2365687", "name": "RHBZ#2365687", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-193", "description": "Off-by-one Error"}]}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-01-08T03:36:41.352Z"}, "x_redhatCweChain": "CWE-193: Off-by-one Error"}}, "cveMetadata": {"cveId": "CVE-2025-47711", "state": "PUBLISHED", "dateUpdated": "2026-01-08T03:36:41.352Z", "dateReserved": "2025-05-07T21:08:45.449Z", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "datePublished": "2025-06-09T06:03:47.063Z", "assignerShortName": "redhat"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nbdkit_project:nbdkit:-:*:*:*:*:*:*:*", "matchCriteriaId": "B5312E2C-4BD8-45EE-8D28-6ED75541E48B", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux_advanced_virtualization:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "A4A47F8A-43BF-44A4-A465-14C7653BC11E", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service."}, {"lang": "es", "value": "Existe una falla en el servidor nbdkit al gestionar las respuestas de sus complementos sobre el estado de los bloques de datos. Si un cliente realiza una solicitud espec\u00edfica para un rango de datos muy grande y un complemento responde con un bloque a\u00fan mayor, el servidor nbdkit puede encontrar un error interno cr\u00edtico que provoque una denegaci\u00f3n de servicio."}], "id": "CVE-2025-47711", "lastModified": "2026-01-08T04:15:53.990", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "secalert@redhat.com", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Secondary"}]}, "published": "2025-06-09T06:15:25.320", "references": [{"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2025-47711"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2365687"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-193"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"bugzilla": {"description": "nbdkit: nbdkit-server: off-by-one error when processing block status may lead to a Denial of Service", "id": "2365687", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2365687"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-193", "details": ["There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service.", "There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service."], "name": "CVE-2025-47711", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "nbdkit", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "nbdkit", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "virt:rhel/nbdkit", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:advanced_virtualization:8::el8", "fix_state": "Out of support scope", "package_name": "virt:8.2/nbdkit", "product_name": "Red Hat Enterprise Linux 8 Advanced Virtualization"}, {"cpe": "cpe:/a:redhat:advanced_virtualization:8::el8", "fix_state": "Out of support scope", "package_name": "virt:av/nbdkit", "product_name": "Red Hat Enterprise Linux 8 Advanced Virtualization"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "nbdkit", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-04-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-47711\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-47711"], "statement": "This vulnerability was rated as a Moderate severity by the Red Hat Product Security team. Based on the fact that while this vulnerability can be exploited remotely (AV:N) with relative ease (AC:L), it does require the attacker to have valid credentials to the target (PR:L). The primary impact is a temporary denial-of-service (A:L), meaning the server becomes unavailable, potentially disrupting dependent services. However, this exploitation does not lead to any compromise of data confidentiality (C:N) or integrity (I:N).", "threat_severity": "Moderate"}

{}