cve-2021-47548
Vulnerability from cvelistv5
Published
2024-05-24 15:09
Modified
2024-12-19 07:44
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port() The if statement: if (port >= DSAF_GE_NUM) return; limits the value of port less than DSAF_GE_NUM (i.e., 8). However, if the value of port is 6 or 7, an array overflow could occur: port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off; because the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6). To fix this possible array overflow, we first check port and if it is greater than or equal to DSAF_MAX_PORT_NUM, the function returns.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ff
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ff
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

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  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47548\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-24T15:15:19.693\",\"lastModified\":\"2024-11-21T06:36:31.137\",\"vulnStatus\":\"Awaiting Analysis\",\"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 \u003e= 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-\u003emac_cb[port]-\u003eport_rst_off;\\n\\nbecause the length of dsaf_dev-\u003emac_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 \u0026gt;= 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-\u0026gt;mac_cb[port]-\u0026gt;port_rst_off; porque la longitud de dsaf_dev-\u0026gt;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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-129\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ff\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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