CVE-2021-47286

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47286", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T13:27:52.129Z", "datePublished": "2024-05-21T14:34:47.372Z", "dateUpdated": "2026-05-11T13:51:33.148Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:51:33.148Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: mhi: core: Validate channel ID when processing command completions\n\nMHI reads the channel ID from the event ring element sent by the\ndevice which can be any value between 0 and 255. In order to\nprevent any out of bound accesses, add a check against the maximum\nnumber of channels supported by the controller and those channels\nnot configured yet so as to skip processing of that event ring\nelement."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/bus/mhi/core/main.c"], "versions": [{"version": "1d3173a3bae7039b765a0956e3e4bf846dbaacb8", "lessThan": "3efec3b4b16fc7af25676a94230a8ab2a3bb867c", "status": "affected", "versionType": "git"}, {"version": "1d3173a3bae7039b765a0956e3e4bf846dbaacb8", "lessThan": "aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9", "status": "affected", "versionType": "git"}, {"version": "1d3173a3bae7039b765a0956e3e4bf846dbaacb8", "lessThan": "546362a9ef2ef40b57c6605f14e88ced507f8dd0", "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/bus/mhi/core/main.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.54", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13.6", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.14", "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": "5.7", "versionEndExcluding": "5.10.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.13.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.14"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3efec3b4b16fc7af25676a94230a8ab2a3bb867c"}, {"url": "https://git.kernel.org/stable/c/aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9"}, {"url": "https://git.kernel.org/stable/c/546362a9ef2ef40b57c6605f14e88ced507f8dd0"}], "title": "bus: mhi: core: Validate channel ID when processing command completions", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-12T15:23:31.121673Z", "id": "CVE-2021-47286", "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": "2024-06-12T15:23:44.666Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.191Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/3efec3b4b16fc7af25676a94230a8ab2a3bb867c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/546362a9ef2ef40b57c6605f14e88ced507f8dd0", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/3efec3b4b16fc7af25676a94230a8ab2a3bb867c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/546362a9ef2ef40b57c6605f14e88ced507f8dd0", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.191Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47286", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-12T15:23:31.121673Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-12T15:23:39.257Z"}}], "cna": {"title": "bus: mhi: core: Validate channel ID when processing command completions", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1d3173a3bae7", "lessThan": "3efec3b4b16f", "versionType": "git"}, {"status": "affected", "version": "1d3173a3bae7", "lessThan": "aed4f5b51aba", "versionType": "git"}, {"status": "affected", "version": "1d3173a3bae7", "lessThan": "546362a9ef2e", "versionType": "git"}], "programFiles": ["drivers/bus/mhi/core/main.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"status": "unaffected", "version": "0", "lessThan": "5.7", "versionType": "custom"}, {"status": "unaffected", "version": "5.10.54", "versionType": "custom", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.13.6", "versionType": "custom", "lessThanOrEqual": "5.13.*"}, {"status": "unaffected", "version": "5.14", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/bus/mhi/core/main.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/3efec3b4b16fc7af25676a94230a8ab2a3bb867c"}, {"url": "https://git.kernel.org/stable/c/aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9"}, {"url": "https://git.kernel.org/stable/c/546362a9ef2ef40b57c6605f14e88ced507f8dd0"}], "x_generator": {"engine": "bippy-a5840b7849dd"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: mhi: core: Validate channel ID when processing command completions\n\nMHI reads the channel ID from the event ring element sent by the\ndevice which can be any value between 0 and 255. In order to\nprevent any out of bound accesses, add a check against the maximum\nnumber of channels supported by the controller and those channels\nnot configured yet so as to skip processing of that event ring\nelement."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:05:18.215Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47286", "state": "PUBLISHED", "dateUpdated": "2024-08-04T05:32:08.191Z", "dateReserved": "2024-05-21T13:27:52.129Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T14:34:47.372Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/bus/mhi/core/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3efec3b4b16fc7af25676a94230a8ab2a3bb867c", "status": "affected", "version": "1d3173a3bae7039b765a0956e3e4bf846dbaacb8", "versionType": "git"}, {"lessThan": "aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9", "status": "affected", "version": "1d3173a3bae7039b765a0956e3e4bf846dbaacb8", "versionType": "git"}, {"lessThan": "546362a9ef2ef40b57c6605f14e88ced507f8dd0", "status": "affected", "version": "1d3173a3bae7039b765a0956e3e4bf846dbaacb8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/bus/mhi/core/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"lessThan": "5.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.54", "versionType": "semver"}, {"lessThanOrEqual": "5.13.*", "status": "unaffected", "version": "5.13.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.14", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "ACAFA789-29AA-41E7-9D88-F49BCA874252", "versionEndExcluding": "5.10.54", "versionStartIncluding": "5.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "512C22FC-1524-4E6F-9E62-4F4B7B6E0576", "versionEndExcluding": "5.13.6", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:*", "matchCriteriaId": "71268287-21A8-4488-AA4F-23C473153131", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:*", "matchCriteriaId": "23B9E5C6-FAB5-4A02-9E39-27C8787B0991", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: mhi: core: Validate channel ID when processing command completions\n\nMHI reads the channel ID from the event ring element sent by the\ndevice which can be any value between 0 and 255. In order to\nprevent any out of bound accesses, add a check against the maximum\nnumber of channels supported by the controller and those channels\nnot configured yet so as to skip processing of that event ring\nelement."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bus: mhi: core: valida el ID del canal al procesar la finalizaci\u00f3n del comando MHI lee el ID del canal del elemento del anillo de eventos enviado por el dispositivo, que puede tener cualquier valor entre 0 y 255. Para evitar accesos fuera de los l\u00edmites, agregue una verificaci\u00f3n del n\u00famero m\u00e1ximo de canales admitidos por el controlador y aquellos canales que a\u00fan no est\u00e1n configurados para omitir el procesamiento de ese elemento del anillo de eventos."}], "id": "CVE-2021-47286", "lastModified": "2026-06-17T04:17:06.453", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47286", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-12T15:23:31.121673Z", "version": "2.0.3"}}]}, "published": "2024-05-21T15:15:16.723", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3efec3b4b16fc7af25676a94230a8ab2a3bb867c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/546362a9ef2ef40b57c6605f14e88ced507f8dd0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3efec3b4b16fc7af25676a94230a8ab2a3bb867c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/546362a9ef2ef40b57c6605f14e88ced507f8dd0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: bus: mhi: core: Validate channel ID when processing command completions", "id": "2282512", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282512"}, "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:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbus: mhi: core: Validate channel ID when processing command completions\nMHI reads the channel ID from the event ring element sent by the\ndevice which can be any value between 0 and 255. In order to\nprevent any out of bound accesses, add a check against the maximum\nnumber of channels supported by the controller and those channels\nnot configured yet so as to skip processing of that event ring\nelement."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-47286", "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-2021-47286\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47286\nhttps://lore.kernel.org/linux-cve-announce/2024052119-CVE-2021-47286-c242@gregkh/T"], "statement": "None of the products shipped by Red Hat are affected by this vulnerability.", "threat_severity": "Moderate"}

{}