{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47548", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-24T15:02:54.829Z", "datePublished": "2024-05-24T15:09:52.634Z", "dateUpdated": "2026-05-11T13:56:45.302Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:56:45.302Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()\n\nThe if statement:\n if (port >= DSAF_GE_NUM)\n return;\n\nlimits the value of port less than DSAF_GE_NUM (i.e., 8).\nHowever, if the value of port is 6 or 7, an array overflow could occur:\n port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off;\n\nbecause the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6).\n\nTo fix this possible array overflow, we first check port and if it is\ngreater than or equal to DSAF_MAX_PORT_NUM, the function returns."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c"], "versions": [{"version": "850bfa3b78ea8849fef78ed74f5f2ccf947db0ca", "lessThan": "948968f8747650447c8f21c9fdba0e1973be040b", "status": "affected", "versionType": "git"}, {"version": "850bfa3b78ea8849fef78ed74f5f2ccf947db0ca", "lessThan": "abbd5faa0748d0aa95d5191d56ff7a17a6275bd1", "status": "affected", "versionType": "git"}, {"version": "850bfa3b78ea8849fef78ed74f5f2ccf947db0ca", "lessThan": "dd07f8971b81ad98cc754b179b331b57f35aa1ff", "status": "affected", "versionType": "git"}, {"version": "850bfa3b78ea8849fef78ed74f5f2ccf947db0ca", "lessThan": "99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d", 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"linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "4.19.220", "status": "unaffected", "lessThanOrEqual": "4.19.*", "versionType": "custom"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "5.4.164", "status": "unaffected", "lessThanOrEqual": "5.4.*", "versionType": "custom"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "5.10.84", "status": "unaffected", "lessThanOrEqual": "5.10.*", "versionType": "custom"}]}, {"vendor": "linux", "product": "linux_kernel", "cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "5.15.7", "status": "unaffected", "lessThanOrEqual": "5.15.*", "versionType": "custom"}]}, {"vendor": "linux", "product": 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"lessThan": "abbd5faa0748d0aa95d5191d56ff7a17a6275bd1", "versionType": "git"}, {"status": "affected", "version": "850bfa3b78ea8849fef78ed74f5f2ccf947db0ca", "lessThan": "dd07f8971b81ad98cc754b179b331b57f35aa1ff", "versionType": "git"}, {"status": "affected", "version": "850bfa3b78ea8849fef78ed74f5f2ccf947db0ca", "lessThan": "99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d", "versionType": "git"}, {"status": "affected", "version": "850bfa3b78ea8849fef78ed74f5f2ccf947db0ca", "lessThan": "22519eff7df2d88adcc2568d86046ce1e2b52803", "versionType": "git"}, {"status": "affected", "version": "850bfa3b78ea8849fef78ed74f5f2ccf947db0ca", "lessThan": "fc7ffa7f10b9454a86369405d9814bf141b30627", "versionType": "git"}, {"status": "affected", "version": "850bfa3b78ea8849fef78ed74f5f2ccf947db0ca", "lessThan": "a66998e0fbf213d47d02813b9679426129d0d114", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c"], "defaultStatus": "unaffected"}, {"repo": 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["drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040b"}, {"url": "https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1"}, {"url": "https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ff"}, {"url": "https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d"}, {"url": "https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803"}, {"url": "https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627"}, {"url": "https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()\n\nThe if statement:\n if (port >= DSAF_GE_NUM)\n return;\n\nlimits the value of port less than DSAF_GE_NUM (i.e., 8).\nHowever, if the value of port is 6 or 7, an array overflow could occur:\n port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off;\n\nbecause the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6).\n\nTo fix this possible array overflow, we first check port and if it is\ngreater than or equal to DSAF_MAX_PORT_NUM, the function returns."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.292", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.257", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.220", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.164", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.84", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.7", "versionStartIncluding": "4.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.16", "versionStartIncluding": "4.7"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-09T21:43:49.384Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47548", "state": "PUBLISHED", "dateUpdated": "2025-12-09T21:43:49.384Z", "dateReserved": "2024-05-24T15:02:54.829Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-24T15:09:52.634Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4455BA5D-1B24-48F2-9F17-E3D2CD9C86AF", "versionEndExcluding": "4.9.292", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7080D941-9847-42F5-BA50-0A03CFB61FD1", "versionEndExcluding": "4.14.257", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FFE5D9F3-CF1C-4DE8-9116-2EBE7BDEF7FD", "versionEndExcluding": "4.19.220", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D2D8DC10-1823-4334-BD0F-C1B620602FF9", "versionEndExcluding": "5.4.164", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AE5B4333-2C46-40C3-8B42-0168AD91DDE1", "versionEndExcluding": "5.10.84", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A696A60B-2782-4119-83DD-1EFFBC903F02", "versionEndExcluding": "5.15.7", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*", "matchCriteriaId": "357AA433-37E8-4323-BFB2-3038D6E4B414", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()\n\nThe if statement:\n if (port >= DSAF_GE_NUM)\n return;\n\nlimits the value of port less than DSAF_GE_NUM (i.e., 8).\nHowever, if the value of port is 6 or 7, an array overflow could occur:\n port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off;\n\nbecause the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6).\n\nTo fix this possible array overflow, we first check port and if it is\ngreater than or equal to DSAF_MAX_PORT_NUM, the function returns."}, {"lang": "es", "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: ethernet: hisilicon: hns: hns_dsaf_misc: corrige un posible desbordamiento de matriz en hns_dsaf_ge_srst_by_port() La sentencia if: if (port >= DSAF_GE_NUM) return; limita el valor del puerto a menos de DSAF_GE_NUM (es decir, 8). Sin embargo, si el valor del puerto es 6 o 7, podr\u00eda producirse un desbordamiento de la matriz: port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off; porque la longitud de dsaf_dev->mac_cb es DSAF_MAX_PORT_NUM (es decir, 6). Para solucionar este posible desbordamiento de la matriz, primero verificamos el puerto y si es mayor o igual a DSAF_MAX_PORT_NUM, la funci\u00f3n regresa."}], "id": "CVE-2021-47548", "lastModified": "2025-04-01T18:42:07.260", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-05-24T15:15:19.693", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ff"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ff"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-129"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:5102", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.16.1.rt7.357.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5101", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.16.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:4902", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.113.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-07-29T00:00:00Z"}, {"advisory": "RHSA-2024:4902", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.113.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-07-29T00:00:00Z"}, {"advisory": "RHSA-2024:4902", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.113.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-07-29T00:00:00Z"}, {"advisory": "RHSA-2024:4740", "cpe": "cpe:/o:redhat:rhel_eus:8.8", "package": "kernel-0:4.18.0-477.64.1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-07-23T00:00:00Z"}, {"advisory": "RHSA-2024:4583", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.26.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-07-17T00:00:00Z"}, {"advisory": "RHSA-2024:4583", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.26.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-07-17T00:00:00Z"}, {"advisory": "RHSA-2024:4533", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.73.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-07-15T00:00:00Z"}, {"advisory": "RHSA-2024:4554", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.73.1.rt14.358.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-07-15T00:00:00Z"}], "bugzilla": {"description": "kernel: ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()", "id": "2283401", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2283401"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.0", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H", "status": "verified"}, "cwe": "CWE-129", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()\nThe if statement:\nif (port >= DSAF_GE_NUM)\nreturn;\nlimits the value of port less than DSAF_GE_NUM (i.e., 8).\nHowever, if the value of port is 6 or 7, an array overflow could occur:\nport_rst_off = dsaf_dev->mac_cb[port]->port_rst_off;\nbecause the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6).\nTo fix this possible array overflow, we first check port and if it is\ngreater than or equal to DSAF_MAX_PORT_NUM, the function returns."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2021-47548", "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:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47548\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47548\nhttps://lore.kernel.org/linux-cve-announce/2024052441-CVE-2021-47548-e9c0@gregkh/T"], "threat_severity": "Moderate"}

{}