{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47476", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-22T06:20:56.200Z", "datePublished": "2024-05-22T08:19:30.201Z", "dateUpdated": "2026-05-11T13:55:25.459Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:55:25.459Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: ni_usb6501: fix NULL-deref in command paths\n\nThe driver uses endpoint-sized USB transfer buffers but had no sanity\nchecks on the sizes. This can lead to zero-size-pointer dereferences or\noverflowed transfer buffers in ni6501_port_command() and\nni6501_counter_command() if a (malicious) device has smaller max-packet\nsizes than expected (or when doing descriptor fuzz testing).\n\nAdd the missing sanity checks to probe()." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/comedi/drivers/ni_usb6501.c" ], "versions": [ { "version": "a03bb00e50ab4c07107da58a52a0bff7943f360c", "lessThan": "58478143771b20ab219937b1c30a706590a59224", "status": "affected", "versionType": "git" }, { "version": "a03bb00e50ab4c07107da58a52a0bff7943f360c", "lessThan": "aa39738423503825625853b643b9e99d11c23816", "status": "affected", "versionType": "git" }, { "version": "a03bb00e50ab4c07107da58a52a0bff7943f360c", "lessThan": "df7b1238f3b599a0b9284249772cdfd1ea83a632", "status": "affected", "versionType": "git" }, { "version": "a03bb00e50ab4c07107da58a52a0bff7943f360c", "lessThan": "bc51111bf6e8e7b6cc94b133e4c291273a16acd1", "status": "affected", "versionType": "git" }, { "version": "a03bb00e50ab4c07107da58a52a0bff7943f360c", "lessThan": "b0156b7c9649d8f55a2ce3d3258509f1b2a181c3", "status": "affected", "versionType": "git" }, { "version": "a03bb00e50ab4c07107da58a52a0bff7943f360c", "lessThan": "ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1", "status": "affected", "versionType": "git" }, { "version": "a03bb00e50ab4c07107da58a52a0bff7943f360c", "lessThan": "4a9d43cb5d5f39fa39fc1da438517004cc95f7ea", "status": "affected", "versionType": "git" }, { "version": "a03bb00e50ab4c07107da58a52a0bff7943f360c", "lessThan": "d6a727a681a39ae4f73081a9bedb45d14f95bdd1", "status": "affected", "versionType": "git" }, { "version": "a03bb00e50ab4c07107da58a52a0bff7943f360c", "lessThan": "907767da8f3a925b060c740e0b5c92ea7dbec440", "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/comedi/drivers/ni_usb6501.c" ], "versions": [ { "version": "3.18", "status": "affected" }, { "version": "0", "lessThan": "3.18", "status": "unaffected", "versionType": "semver" }, { "version": "4.4.292", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.290", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.255", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.217", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.159", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.79", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.14.18", "lessThanOrEqual": "5.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.2", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.16", "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": "3.18", "versionEndExcluding": "4.4.292" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "4.9.290" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "4.14.255" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "4.19.217" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.4.159" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.10.79" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.14.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.15.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/58478143771b20ab219937b1c30a706590a59224" }, { "url": "https://git.kernel.org/stable/c/aa39738423503825625853b643b9e99d11c23816" }, { "url": "https://git.kernel.org/stable/c/df7b1238f3b599a0b9284249772cdfd1ea83a632" }, { "url": "https://git.kernel.org/stable/c/bc51111bf6e8e7b6cc94b133e4c291273a16acd1" }, { "url": "https://git.kernel.org/stable/c/b0156b7c9649d8f55a2ce3d3258509f1b2a181c3" }, { "url": "https://git.kernel.org/stable/c/ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1" }, { "url": "https://git.kernel.org/stable/c/4a9d43cb5d5f39fa39fc1da438517004cc95f7ea" }, { "url": "https://git.kernel.org/stable/c/d6a727a681a39ae4f73081a9bedb45d14f95bdd1" }, { "url": "https://git.kernel.org/stable/c/907767da8f3a925b060c740e0b5c92ea7dbec440" } ], "title": "comedi: ni_usb6501: fix NULL-deref in command paths", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-476", "lang": "en", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 4.6, "attackVector": "PHYSICAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-25T18:23:48.578876Z", "id": "CVE-2021-47476", "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": "2024-11-01T14:38:44.765Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.479Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/58478143771b20ab219937b1c30a706590a59224", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/aa39738423503825625853b643b9e99d11c23816", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/df7b1238f3b599a0b9284249772cdfd1ea83a632", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/bc51111bf6e8e7b6cc94b133e4c291273a16acd1", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/b0156b7c9649d8f55a2ce3d3258509f1b2a181c3", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/4a9d43cb5d5f39fa39fc1da438517004cc95f7ea", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/d6a727a681a39ae4f73081a9bedb45d14f95bdd1", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/907767da8f3a925b060c740e0b5c92ea7dbec440", "tags": [ "x_transferred" ] } ] } ] } }