{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: mount fails with buffer overflow in strlen\n\nStarting with kernel 5.11 built with CONFIG_FORTIFY_SOURCE mouting an\nocfs2 filesystem with either o2cb or pcmk cluster stack fails with the\ntrace below.  Problem seems to be that strings for cluster stack and\ncluster name are not guaranteed to be null terminated in the disk\nrepresentation, while strlcpy assumes that the source string is always\nnull terminated.  This causes a read outside of the source string\ntriggering the buffer overflow detection.\n\n  detected buffer overflow in strlen\n  ------------[ cut here ]------------\n  kernel BUG at lib/string.c:1149!\n  invalid opcode: 0000 [#1] SMP PTI\n  CPU: 1 PID: 910 Comm: mount.ocfs2 Not tainted 5.14.0-1-amd64 #1\n    Debian 5.14.6-2\n  RIP: 0010:fortify_panic+0xf/0x11\n  ...\n  Call Trace:\n   ocfs2_initialize_super.isra.0.cold+0xc/0x18 [ocfs2]\n   ocfs2_fill_super+0x359/0x19b0 [ocfs2]\n   mount_bdev+0x185/0x1b0\n   legacy_get_tree+0x27/0x40\n   vfs_get_tree+0x25/0xb0\n   path_mount+0x454/0xa20\n   __x64_sys_mount+0x103/0x140\n   do_syscall_64+0x3b/0xc0\n   entry_SYSCALL_64_after_hwframe+0x44/0xae"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/ocfs2/super.c"
               ],
               "versions": [
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "ac011cb3ff7a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "4b74ddcc22ee",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "232ed9752510",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "7623b1035ca2",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "d3a83576378b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "93be0eeea14c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "0e677ea5b739",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "b15fa9224e6e",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/ocfs2/super.c"
               ],
               "versions": [
                  {
                     "version": "4.4.290",
                     "lessThanOrEqual": "4.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.9.288",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.253",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.214",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.156",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.76",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.14.15",
                     "lessThanOrEqual": "5.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb"
            },
            {
               "url": "https://git.kernel.org/stable/c/4b74ddcc22ee6455946e80a9c4808801f8f8561e"
            },
            {
               "url": "https://git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498"
            },
            {
               "url": "https://git.kernel.org/stable/c/7623b1035ca2d17bde0f6a086ad6844a34648df1"
            },
            {
               "url": "https://git.kernel.org/stable/c/d3a83576378b4c904f711598dde2c5e881c4295c"
            },
            {
               "url": "https://git.kernel.org/stable/c/93be0eeea14cf39235e585c8f56df3b3859deaad"
            },
            {
               "url": "https://git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f"
            },
            {
               "url": "https://git.kernel.org/stable/c/b15fa9224e6e1239414525d8d556d824701849fc"
            }
         ],
         "title": "ocfs2: mount fails with buffer overflow in strlen",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-47458",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}