{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "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": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/core/rtnetlink.c"
               ],
               "versions": [
                  {
                     "version": "ad46d4861ed3",
                     "lessThan": "b9fbc44159df",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "abb0172fa8dc",
                     "lessThan": "882a51a10ecf",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "047508edd602",
                     "lessThan": "a1227b27fccc",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8dfac8071d58",
                     "lessThan": "f2261eb994aa",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d73ef2d69c0d",
                     "lessThan": "167d8642daa6",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d73ef2d69c0d",
                     "lessThan": "831bc2728fb4",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d73ef2d69c0d",
                     "lessThan": "743ad091fb46",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/core/rtnetlink.c"
               ],
               "versions": [
                  {
                     "version": "6.5",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.5",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.271",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.212",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.151",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.81",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.21",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.9",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/b9fbc44159dfc3e9a7073032752d9e03f5194a6f"
            },
            {
               "url": "https://git.kernel.org/stable/c/882a51a10ecf24ce135d573afa0872aef02c5125"
            },
            {
               "url": "https://git.kernel.org/stable/c/a1227b27fcccc99dc44f912b479e01a17e2d7d31"
            },
            {
               "url": "https://git.kernel.org/stable/c/f2261eb994aa5757c1da046b78e3229a3ece0ad9"
            },
            {
               "url": "https://git.kernel.org/stable/c/167d8642daa6a44b51de17f8ff0f584e1e762db7"
            },
            {
               "url": "https://git.kernel.org/stable/c/831bc2728fb48a8957a824cba8c264b30dca1425"
            },
            {
               "url": "https://git.kernel.org/stable/c/743ad091fb46e622f1b690385bb15e3cd3daf874"
            }
         ],
         "title": "rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-27414",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}