{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: fix NULL ptr dereference in llcp_sock_getname() after failed connect\n\nIt's possible to trigger NULL pointer dereference by local unprivileged\nuser, when calling getsockname() after failed bind() (e.g. the bind\nfails because LLCP_SAP_MAX used as SAP):\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000000\n  CPU: 1 PID: 426 Comm: llcp_sock_getna Not tainted 5.13.0-rc2-next-20210521+ #9\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1 04/01/2014\n  Call Trace:\n   llcp_sock_getname+0xb1/0xe0\n   __sys_getpeername+0x95/0xc0\n   ? lockdep_hardirqs_on_prepare+0xd5/0x180\n   ? syscall_enter_from_user_mode+0x1c/0x40\n   __x64_sys_getpeername+0x11/0x20\n   do_syscall_64+0x36/0x70\n   entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThis can be reproduced with Syzkaller C repro (bind followed by\ngetpeername):\nhttps://syzkaller.appspot.com/x/repro.c?x=14def446e00000"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "d646960f7986",
                     "lessThan": "eb6875d48590",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d646960f7986",
                     "lessThan": "39c15bd2e5d1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d646960f7986",
                     "lessThan": "ffff05b9ee5c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d646960f7986",
                     "lessThan": "93e4ac2a9979",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d646960f7986",
                     "lessThan": "5d4c4b06ed9f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d646960f7986",
                     "lessThan": "48ee0db61c82",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d646960f7986",
                     "lessThan": "0c4559736d9a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d646960f7986",
                     "lessThan": "4ac06a1e013c",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "3.3",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "3.3",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.4.272",
                     "lessThanOrEqual": "4.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.9.272",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.236",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.194",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.125",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.43",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12.10",
                     "lessThanOrEqual": "5.12.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.13",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/eb6875d48590d8e564092e831ff07fa384d7e477"
            },
            {
               "url": "https://git.kernel.org/stable/c/39c15bd2e5d11bcf7f4c3dba2aad9e1e110a5d94"
            },
            {
               "url": "https://git.kernel.org/stable/c/ffff05b9ee5c74c04bba2801c1f99b31975d74d9"
            },
            {
               "url": "https://git.kernel.org/stable/c/93e4ac2a9979a9a4ecc158409ed9c3044dc0ae1f"
            },
            {
               "url": "https://git.kernel.org/stable/c/5d4c4b06ed9fb7a69d0b2e2a73fc73226d25ab70"
            },
            {
               "url": "https://git.kernel.org/stable/c/48ee0db61c8299022ec88c79ad137f290196cac2"
            },
            {
               "url": "https://git.kernel.org/stable/c/0c4559736d9a4ec1ca58ba98ca34e7c4da4c422b"
            },
            {
               "url": "https://git.kernel.org/stable/c/4ac06a1e013cf5fdd963317ffd3b968560f33bba"
            }
         ],
         "title": "nfc: fix NULL ptr dereference in llcp_sock_getname() after failed connect",
         "x_generator": {
            "engine": "bippy-8df59b4913de"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-47115",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}