FKIE_CVE-2024-43839

Vulnerability from fkie_nvd - Published: 2024-08-17 10:15 - Updated: 2026-03-27 20:56
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bna: adjust 'name' buf size of bna_tcb and bna_ccb structures To have enough space to write all possible sprintf() args. Currently 'name' size is 16, but the first '%s' specifier may already need at least 16 characters, since 'bnad->netdev->name' is used there. For '%d' specifiers, assume that they require: * 1 char for 'tx_id + tx_info->tcb[i]->id' sum, BNAD_MAX_TXQ_PER_TX is 8 * 2 chars for 'rx_id + rx_info->rx_ctrl[i].ccb->id', BNAD_MAX_RXP_PER_RX is 16 And replace sprintf with snprintf. Detected using the static analysis tool - Svace.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ce46045f9b90d952602e2c0b8886cfadf860bf1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d20c4044ab4d0e6a99aa35853e66f0aed5589e3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab748dd10d8742561f2980fea08ffb4f0cacfdefPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b0ff0cd0847b03c0a0abe20cfa900eabcfcb9e43Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c90b1cd7758fd4839909e838ae195d19f8065d76Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c9741a03dc8e491e57b95fba0058ab46b7e506daPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0f48f51d55fb187400e9787192eda09fa200ff5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f121740f69eda4da2de9a20a6687a13593e72540Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/10/msg00003.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.htmlMailing List, Third Party Advisory
Impacted products
Vendor Product Version
debian debian_linux 11.0
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbna: adjust \u0027name\u0027 buf size of bna_tcb and bna_ccb structures\n\nTo have enough space to write all possible sprintf() args. Currently\n\u0027name\u0027 size is 16, but the first \u0027%s\u0027 specifier may already need at\nleast 16 characters, since \u0027bnad-\u003enetdev-\u003ename\u0027 is used there.\n\nFor \u0027%d\u0027 specifiers, assume that they require:\n * 1 char for \u0027tx_id + tx_info-\u003etcb[i]-\u003eid\u0027 sum, BNAD_MAX_TXQ_PER_TX is 8\n * 2 chars for \u0027rx_id + rx_info-\u003erx_ctrl[i].ccb-\u003eid\u0027, BNAD_MAX_RXP_PER_RX\n   is 16\n\nAnd replace sprintf with snprintf.\n\nDetected using the static analysis tool - Svace."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bna: ajuste el tama\u00f1o del buf \u0027nombre\u0027 de las estructuras bna_tcb y bna_ccb para tener suficiente espacio para escribir todos los argumentos posibles de sprintf(). Actualmente el tama\u00f1o de \u0027nombre\u0027 es 16, pero es posible que el primer especificador \u0027%s\u0027 ya necesite al menos 16 caracteres, ya que all\u00ed se usa \u0027bnad-\u0026gt;netdev-\u0026gt;name\u0027. Para los especificadores \u0027%d\u0027, supongamos que requieren: * 1 car\u00e1cter para la suma \u0027tx_id + tx_info-\u0026gt;tcb[i]-\u0026gt;id\u0027, BNAD_MAX_TXQ_PER_TX es 8 * 2 caracteres para \u0027rx_id + rx_info-\u0026gt;rx_ctrl[i]. ccb-\u0026gt;id\u0027, BNAD_MAX_RXP_PER_RX es 16 y reemplace sprintf con snprintf. Detectado utilizando la herramienta de an\u00e1lisis est\u00e1tico - Svace."
    }
  ],
  "id": "CVE-2024-43839",
  "lastModified": "2026-03-27T20:56:13.590",
  "metrics": {
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          "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"
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        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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  "published": "2024-08-17T10:15:09.447",
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