FKIE_CVE-2021-47548

Vulnerability from fkie_nvd - Published: 2024-05-24 15:15 - Updated: 2025-04-01 18:42
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/22519eff7df2d88adcc2568d86046ce1e2b52803Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ffPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ffPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.16
To clipboard 

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  "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."
    }
  ],
  "id": "CVE-2021-47548",
  "lastModified": "2025-04-01T18:42:07.260",
  "metrics": {
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          "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"
        },
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        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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  "published": "2024-05-24T15:15:19.693",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
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}


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