{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware_loader: Block path traversal\n\nMost firmware names are hardcoded strings, or are constructed from fairly\nconstrained format strings where the dynamic parts are just some hex\nnumbers or such.\n\nHowever, there are a couple codepaths in the kernel where firmware file\nnames contain string components that are passed through from a device or\nsemi-privileged userspace; the ones I could find (not counting interfaces\nthat require root privileges) are:\n\n - lpfc_sli4_request_firmware_update() seems to construct the firmware\n   filename from \"ModelName\", a string that was previously parsed out of\n   some descriptor (\"Vital Product Data\") in lpfc_fill_vpd()\n - nfp_net_fw_find() seems to construct a firmware filename from a model\n   name coming from nfp_hwinfo_lookup(pf->hwinfo, \"nffw.partno\"), which I\n   think parses some descriptor that was read from the device.\n   (But this case likely isn't exploitable because the format string looks\n   like \"netronome/nic_%s\", and there shouldn't be any *folders* starting\n   with \"netronome/nic_\". The previous case was different because there,\n   the \"%s\" is *at the start* of the format string.)\n - module_flash_fw_schedule() is reachable from the\n   ETHTOOL_MSG_MODULE_FW_FLASH_ACT netlink command, which is marked as\n   GENL_UNS_ADMIN_PERM (meaning CAP_NET_ADMIN inside a user namespace is\n   enough to pass the privilege check), and takes a userspace-provided\n   firmware name.\n   (But I think to reach this case, you need to have CAP_NET_ADMIN over a\n   network namespace that a special kind of ethernet device is mapped into,\n   so I think this is not a viable attack path in practice.)\n\nFix it by rejecting any firmware names containing \"..\" path components.\n\nFor what it's worth, I went looking and haven't found any USB device\ndrivers that use the firmware loader dangerously."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/base/firmware_loader/main.c"
               ],
               "versions": [
                  {
                     "version": "abb139e75c2c",
                     "lessThan": "c30558e6c5c9",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "abb139e75c2c",
                     "lessThan": "a77fc4acfd49",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "abb139e75c2c",
                     "lessThan": "3d2411f4edcb",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "abb139e75c2c",
                     "lessThan": "7420c1bf7fc7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "abb139e75c2c",
                     "lessThan": "28f1cd94d3f1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "abb139e75c2c",
                     "lessThan": "6c4e13fdfcab",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "abb139e75c2c",
                     "lessThan": "f0e5311aa802",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/base/firmware_loader/main.c"
               ],
               "versions": [
                  {
                     "version": "3.7",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "3.7",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.227",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.168",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.113",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.54",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10.13",
                     "lessThanOrEqual": "6.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.11.2",
                     "lessThanOrEqual": "6.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.12-rc1",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/c30558e6c5c9ad6c86459d9acce1520ceeab9ea6"
            },
            {
               "url": "https://git.kernel.org/stable/c/a77fc4acfd49fc6076e565445b2bc5fdc3244da4"
            },
            {
               "url": "https://git.kernel.org/stable/c/3d2411f4edcb649eaf232160db459bb4770b5251"
            },
            {
               "url": "https://git.kernel.org/stable/c/7420c1bf7fc784e587b87329cc6dfa3dca537aa4"
            },
            {
               "url": "https://git.kernel.org/stable/c/28f1cd94d3f1092728fb775a0fe26c5f1ac2ebeb"
            },
            {
               "url": "https://git.kernel.org/stable/c/6c4e13fdfcab34811c3143a0a03c05fec4e870ec"
            },
            {
               "url": "https://git.kernel.org/stable/c/f0e5311aa8022107d63c54e2f03684ec097d1394"
            }
         ],
         "title": "firmware_loader: Block path traversal",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-47742",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}