{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47475", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-22T06:20:56.200Z", "datePublished": "2024-05-22T08:19:29.423Z", "dateUpdated": "2026-05-11T13:55:24.292Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:55:24.292Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: vmk80xx: fix transfer-buffer overflows\n\nThe driver uses endpoint-sized USB transfer buffers but up until\nrecently had no sanity checks on the sizes.\n\nCommit e1f13c879a7c (\"staging: comedi: check validity of wMaxPacketSize\nof usb endpoints found\") inadvertently fixed NULL-pointer dereferences\nwhen accessing the transfer buffers in case a malicious device has a\nzero wMaxPacketSize.\n\nMake sure to allocate buffers large enough to handle also the other\naccesses that are done without a size check (e.g. byte 18 in\nvmk80xx_cnt_insn_read() for the VMK8061_MODEL) to avoid writing beyond\nthe buffers, for example, when doing descriptor fuzzing.\n\nThe original driver was for a low-speed device with 8-byte buffers.\nSupport was later added for a device that uses bulk transfers and is\npresumably a full-speed device with a maximum 64-byte wMaxPacketSize." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/comedi/drivers/vmk80xx.c" ], "versions": [ { "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb", "lessThan": "5229159f1d052821007aff1a1beb7873eacf1a9f", "status": "affected", "versionType": "git" }, { "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb", "lessThan": "ec85bcff4ed09260243d8f39faba99e1041718ba", "status": "affected", "versionType": "git" }, { "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb", "lessThan": "40d2a7e278e2e7c0a5fd7e997e7eb63945bf93f7", "status": "affected", "versionType": "git" }, { "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb", "lessThan": "7a2021b896de1ad559d33b5c5cdd20b982242088", "status": "affected", "versionType": "git" }, { "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb", "lessThan": "199acd8c110e3ae62833c24f632b0bb1c9f012a9", "status": "affected", "versionType": "git" }, { "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb", "lessThan": "33d7a470730dfe7c9bfc8da84575cf2cedd60d00", "status": "affected", "versionType": "git" }, { "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb", "lessThan": "278484ae93297b1bb1ce755f9d3b6d95a48c7d47", "status": "affected", "versionType": "git" }, { "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb", "lessThan": "06ac746d57e6d32b062e220415c607b7e2e0fa50", "status": "affected", "versionType": "git" }, { "version": "985cafccbf9b7f862aa1c5ee566801e18b5161fb", "lessThan": "a23461c47482fc232ffc9b819539d1f837adf2b1", "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/vmk80xx.c" ], "versions": [ { "version": "2.6.31", "status": "affected" }, { "version": "0", "lessThan": "2.6.31", "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": "2.6.31", "versionEndExcluding": "4.4.292" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "4.9.290" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "4.14.255" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "4.19.217" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.4.159" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.10.79" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.14.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.15.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/5229159f1d052821007aff1a1beb7873eacf1a9f" }, { "url": "https://git.kernel.org/stable/c/ec85bcff4ed09260243d8f39faba99e1041718ba" }, { "url": "https://git.kernel.org/stable/c/40d2a7e278e2e7c0a5fd7e997e7eb63945bf93f7" }, { "url": "https://git.kernel.org/stable/c/7a2021b896de1ad559d33b5c5cdd20b982242088" }, { "url": "https://git.kernel.org/stable/c/199acd8c110e3ae62833c24f632b0bb1c9f012a9" }, { "url": "https://git.kernel.org/stable/c/33d7a470730dfe7c9bfc8da84575cf2cedd60d00" }, { "url": "https://git.kernel.org/stable/c/278484ae93297b1bb1ce755f9d3b6d95a48c7d47" }, { "url": "https://git.kernel.org/stable/c/06ac746d57e6d32b062e220415c607b7e2e0fa50" }, { "url": "https://git.kernel.org/stable/c/a23461c47482fc232ffc9b819539d1f837adf2b1" } ], "title": "comedi: vmk80xx: fix transfer-buffer overflows", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2021-47475", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-22T17:52:35.271810Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:13:48.725Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.742Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/5229159f1d052821007aff1a1beb7873eacf1a9f", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/ec85bcff4ed09260243d8f39faba99e1041718ba", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/40d2a7e278e2e7c0a5fd7e997e7eb63945bf93f7", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/7a2021b896de1ad559d33b5c5cdd20b982242088", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/199acd8c110e3ae62833c24f632b0bb1c9f012a9", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/33d7a470730dfe7c9bfc8da84575cf2cedd60d00", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/278484ae93297b1bb1ce755f9d3b6d95a48c7d47", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/06ac746d57e6d32b062e220415c607b7e2e0fa50", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/a23461c47482fc232ffc9b819539d1f837adf2b1", "tags": [ "x_transferred" ] } ] } ] } }