{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47364", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:58:30.809Z", "datePublished": "2024-05-21T15:03:31.852Z", "dateUpdated": "2026-05-11T13:53:16.771Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:53:16.771Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: Fix memory leak in compat_insnlist()\n\n`compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST`\nioctl (whenwhen `CONFIG_COMPAT` is enabled). It allocates memory to\ntemporarily hold an array of `struct comedi_insn` converted from the\n32-bit version in user space. This memory is only being freed if there\nis a fault while filling the array, otherwise it is leaked.\n\nAdd a call to `kfree()` to fix the leak."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/comedi/comedi_fops.c"], "versions": [{"version": "b8d47d8813055ce38c0d2ad913d5462017e52692", "lessThan": "8d6a21e4cd6a319b0662cbe4ad6199e276ac776a", "status": "affected", "versionType": "git"}, {"version": "b8d47d8813055ce38c0d2ad913d5462017e52692", "lessThan": "f217b6c1e28ed0b353634ce4d92a155b80bd1671", "status": "affected", "versionType": "git"}, {"version": "b8d47d8813055ce38c0d2ad913d5462017e52692", "lessThan": "bb509a6ffed2c8b0950f637ab5779aa818ed1596", "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/comedi_fops.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.70", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.14.9", "lessThanOrEqual": "5.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15", "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": "5.8", "versionEndExcluding": "5.10.70"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.14.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a"}, {"url": "https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671"}, {"url": "https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596"}], "title": "comedi: Fix memory leak in compat_insnlist()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47364", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-23T18:02:02.368572Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:14:38.164Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.649Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.649Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47364", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-23T18:02:02.368572Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-23T18:02:06.627Z"}, "title": "CISA ADP Vulnrichment"}], "cna": {"title": "comedi: Fix memory leak in compat_insnlist()", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "b8d47d8813055ce38c0d2ad913d5462017e52692", "lessThan": "8d6a21e4cd6a319b0662cbe4ad6199e276ac776a", "versionType": "git"}, {"status": "affected", "version": "b8d47d8813055ce38c0d2ad913d5462017e52692", "lessThan": "f217b6c1e28ed0b353634ce4d92a155b80bd1671", "versionType": "git"}, {"status": "affected", "version": "b8d47d8813055ce38c0d2ad913d5462017e52692", "lessThan": "bb509a6ffed2c8b0950f637ab5779aa818ed1596", "versionType": "git"}], "programFiles": ["drivers/comedi/comedi_fops.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"status": "unaffected", "version": "0", "lessThan": "5.8", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.70", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.14.9", "versionType": "semver", "lessThanOrEqual": "5.14.*"}, {"status": "unaffected", "version": "5.15", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/comedi/comedi_fops.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a"}, {"url": "https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671"}, {"url": "https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: Fix memory leak in compat_insnlist()\n\n`compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST`\nioctl (whenwhen `CONFIG_COMPAT` is enabled). It allocates memory to\ntemporarily hold an array of `struct comedi_insn` converted from the\n32-bit version in user space. This memory is only being freed if there\nis a fault while filling the array, otherwise it is leaked.\n\nAdd a call to `kfree()` to fix the leak."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.70", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.14.9", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15", "versionStartIncluding": "5.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:09:25.272Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47364", "state": "PUBLISHED", "dateUpdated": "2025-05-04T07:09:25.272Z", "dateReserved": "2024-05-21T14:58:30.809Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T15:03:31.852Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4B70A168-6AA0-4245-A2DB-5A1E491E45B0", "versionEndExcluding": "5.10.70", "versionStartIncluding": "5.8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1B31D6C1-A751-438D-906B-0C56B789D498", "versionEndExcluding": "5.14.9", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*", "matchCriteriaId": "E46C74C6-B76B-4C94-A6A4-FD2FFF62D644", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*", "matchCriteriaId": "60134C3A-06E4-48C1-B04F-2903732A4E56", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: Fix memory leak in compat_insnlist()\n\n`compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST`\nioctl (whenwhen `CONFIG_COMPAT` is enabled). It allocates memory to\ntemporarily hold an array of `struct comedi_insn` converted from the\n32-bit version in user space. This memory is only being freed if there\nis a fault while filling the array, otherwise it is leaked.\n\nAdd a call to `kfree()` to fix the leak."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: comedi: Reparar p\u00e9rdida de memoria en compat_insnlist() `compat_insnlist()` maneja la versi\u00f3n de 32 bits del ioctl `COMEDI_INSNLIST` (cuando `CONFIG_COMPAT` est\u00e1 habilitado). Asigna memoria para almacenar temporalmente una matriz de `struct comedi_insn` convertida desde la versi\u00f3n de 32 bits en el espacio de usuario. Esta memoria solo se libera si hay una falla al llenar la matriz; de lo contrario, se pierde. Agregue una llamada a `kfree()` para solucionar la fuga."}], "id": "CVE-2021-47364", "lastModified": "2024-12-26T17:56:47.957", "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"}]}, "published": "2024-05-21T15:15:22.497", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: comedi: Fix memory leak in compat_insnlist()", "id": "2282385", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282385"}, "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-401", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncomedi: Fix memory leak in compat_insnlist()\n`compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST`\nioctl (whenwhen `CONFIG_COMPAT` is enabled). It allocates memory to\ntemporarily hold an array of `struct comedi_insn` converted from the\n32-bit version in user space. This memory is only being freed if there\nis a fault while filling the array, otherwise it is leaked.\nAdd a call to `kfree()` to fix the leak."], "name": "CVE-2021-47364", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "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": "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": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47364\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47364\nhttps://lore.kernel.org/linux-cve-announce/2024052138-CVE-2021-47364-a7c7@gregkh/T"], "threat_severity": "Low"}

{}