CVE-2021-47039

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47039", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-27T18:42:55.968Z", "datePublished": "2024-02-28T08:13:45.937Z", "dateUpdated": "2026-05-11T13:46:46.494Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:46:46.494Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nataflop: potential out of bounds in do_format()\n\nThe function uses \"type\" as an array index:\n\n\tq = unit[drive].disk[type]->queue;\n\nUnfortunately the bounds check on \"type\" isn't done until later in the\nfunction. Fix this by moving the bounds check to the start."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/block/ataflop.c"], "versions": [{"version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a", "lessThan": "07f86aa8f4fe077be1b018cc177eb8c6573e5671", "status": "affected", "versionType": "git"}, {"version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a", "lessThan": "2a3a8bbca28b899806844c00d49ed1b7ccb50957", "status": "affected", "versionType": "git"}, {"version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a", "lessThan": "1ffec389a6431782a8a28805830b6fae9bf00af1", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/block/ataflop.c"], "versions": [{"version": "5.11", "status": "affected"}, {"version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver"}, {"version": "5.11.21", "lessThanOrEqual": "5.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.12.4", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.11.21"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.12.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671"}, {"url": "https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957"}, {"url": "https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1"}], "title": "ataflop: potential out of bounds in do_format()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47039", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-02-28T19:19:31.846169Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:14:17.074Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.421Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.421Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47039", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-02-28T19:19:31.846169Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-23T19:01:13.667Z"}, "title": "CISA ADP Vulnrichment"}], "cna": {"title": "ataflop: potential out of bounds in do_format()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a", "lessThan": "07f86aa8f4fe077be1b018cc177eb8c6573e5671", "versionType": "git"}, {"status": "affected", "version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a", "lessThan": "2a3a8bbca28b899806844c00d49ed1b7ccb50957", "versionType": "git"}, {"status": "affected", "version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a", "lessThan": "1ffec389a6431782a8a28805830b6fae9bf00af1", "versionType": "git"}], "programFiles": ["drivers/block/ataflop.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.11"}, {"status": "unaffected", "version": "0", "lessThan": "5.11", "versionType": "semver"}, {"status": "unaffected", "version": "5.11.21", "versionType": "semver", "lessThanOrEqual": "5.11.*"}, {"status": "unaffected", "version": "5.12.4", "versionType": "semver", "lessThanOrEqual": "5.12.*"}, {"status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/block/ataflop.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671"}, {"url": "https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957"}, {"url": "https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nataflop: potential out of bounds in do_format()\n\nThe function uses \"type\" as an array index:\n\n\tq = unit[drive].disk[type]->queue;\n\nUnfortunately the bounds check on \"type\" isn't done until later in the\nfunction. Fix this by moving the bounds check to the start."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.11.21", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.12.4", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.13", "versionStartIncluding": "5.11"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:02:48.800Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47039", "state": "PUBLISHED", "dateUpdated": "2025-05-04T07:02:48.800Z", "dateReserved": "2024-02-27T18:42:55.968Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-02-28T08:13:45.937Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/block/ataflop.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "07f86aa8f4fe077be1b018cc177eb8c6573e5671", "status": "affected", "version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a", "versionType": "git"}, {"lessThan": "2a3a8bbca28b899806844c00d49ed1b7ccb50957", "status": "affected", "version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a", "versionType": "git"}, {"lessThan": "1ffec389a6431782a8a28805830b6fae9bf00af1", "status": "affected", "version": "bf9c0538e485b591a2ee02d9adb8a99db4be5a2a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/block/ataflop.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.11"}, {"lessThan": "5.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.11.*", "status": "unaffected", "version": "5.11.21", "versionType": "semver"}, {"lessThanOrEqual": "5.12.*", "status": "unaffected", "version": "5.12.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8CBB94EC-EC33-4464-99C5-03E5542715F0", "versionEndExcluding": "5.11.21", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8C7052F-1B7B-4327-9C2B-84EBF3243838", "versionEndExcluding": "5.12.4", "versionStartIncluding": "5.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nataflop: potential out of bounds in do_format()\n\nThe function uses \"type\" as an array index:\n\n\tq = unit[drive].disk[type]->queue;\n\nUnfortunately the bounds check on \"type\" isn't done until later in the\nfunction. Fix this by moving the bounds check to the start."}, {"lang": "es", "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: ataflop: potencial fuera de los l\u00edmites en do_format() La funci\u00f3n utiliza \"tipo\" como \u00edndice de matriz: q = unidad[unidad].disco[tipo]->cola; Desafortunadamente, la verificaci\u00f3n de los l\u00edmites en \"tipo\" no se realiza hasta m\u00e1s adelante en la funci\u00f3n. Solucione este problema moviendo la verificaci\u00f3n de los l\u00edmites al inicio."}], "id": "CVE-2021-47039", "lastModified": "2026-06-17T04:16:16.710", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47039", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-02-28T19:19:31.846169Z", "version": "2.0.3"}}]}, "published": "2024-02-28T09:15:39.950", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/07f86aa8f4fe077be1b018cc177eb8c6573e5671"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1ffec389a6431782a8a28805830b6fae9bf00af1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2a3a8bbca28b899806844c00d49ed1b7ccb50957"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ataflop: potential out of bounds in do_format()", "id": "2267001", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2267001"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nataflop: potential out of bounds in do_format()\nThe function uses \"type\" as an array index:\nq = unit[drive].disk[type]->queue;\nUnfortunately the bounds check on \"type\" isn't done until later in the\nfunction. Fix this by moving the bounds check to the start."], "name": "CVE-2021-47039", "package_state": [{"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": "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": "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": "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": "2024-02-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47039\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47039\nhttps://lore.kernel.org/linux-cve-announce/2024022837-CVE-2021-47039-638f@gregkh/T/#u"], "threat_severity": "Low"}

{}