{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-27414",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-27414"
  ],
  "published": "2024-05-17T11:52:22Z",
  "summary": "rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back\n\nIn the commit d73ef2d69c0d (\"rtnetlink: let rtnl_bridge_setlink checks\nIFLA_BRIDGE_MODE length\"), an adjustment was made to the old loop logic\nin the function `rtnl_bridge_setlink` to enable the loop to also check\nthe length of the IFLA_BRIDGE_MODE attribute. However, this adjustment\nremoved the `break` statement and led to an error logic of the flags\nwriting back at the end of this function.\n\nif (have_flags)\n    memcpy(nla_data(attr), &flags, sizeof(flags));\n    // attr should point to IFLA_BRIDGE_FLAGS NLA !!!\n\nBefore the mentioned commit, the `attr` is granted to be IFLA_BRIDGE_FLAGS.\nHowever, this is not necessarily true fow now as the updated loop will let\nthe attr point to the last NLA, even an invalid NLA which could cause\noverflow writes.\n\nThis patch introduces a new variable `br_flag` to save the NLA pointer\nthat points to IFLA_BRIDGE_FLAGS and uses it to resolve the mentioned\nerror logic.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
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        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1",
        "1:6.6.20-1+rpt1"
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      "ecosystem_specific": {
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            "binary_version": "1:6.1.47-1+rpt2"
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-27414"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b9fbc44159dfc3e9a7073032752d9e03f5194a6f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/882a51a10ecf24ce135d573afa0872aef02c5125"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a1227b27fcccc99dc44f912b479e01a17e2d7d31"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f2261eb994aa5757c1da046b78e3229a3ece0ad9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/167d8642daa6a44b51de17f8ff0f584e1e762db7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/831bc2728fb48a8957a824cba8c264b30dca1425"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/743ad091fb46e622f1b690385bb15e3cd3daf874"
    }
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  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z"
  }
}