{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtiofs: fix memory leak in virtio_fs_probe()\n\nWhen accidentally passing twice the same tag to qemu, kmemleak ended up\nreporting a memory leak in virtiofs.  Also, looking at the log I saw the\nfollowing error (that's when I realised the duplicated tag):\n\n  virtiofs: probe of virtio5 failed with error -17\n\nHere's the kmemleak log for reference:\n\nunreferenced object 0xffff888103d47800 (size 1024):\n  comm \"systemd-udevd\", pid 118, jiffies 4294893780 (age 18.340s)\n  hex dump (first 32 bytes):\n    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........\n    ff ff ff ff ff ff ff ff 80 90 02 a0 ff ff ff ff  ................\n  backtrace:\n    [<000000000ebb87c1>] virtio_fs_probe+0x171/0x7ae [virtiofs]\n    [<00000000f8aca419>] virtio_dev_probe+0x15f/0x210\n    [<000000004d6baf3c>] really_probe+0xea/0x430\n    [<00000000a6ceeac8>] device_driver_attach+0xa8/0xb0\n    [<00000000196f47a7>] __driver_attach+0x98/0x140\n    [<000000000b20601d>] bus_for_each_dev+0x7b/0xc0\n    [<00000000399c7b7f>] bus_add_driver+0x11b/0x1f0\n    [<0000000032b09ba7>] driver_register+0x8f/0xe0\n    [<00000000cdd55998>] 0xffffffffa002c013\n    [<000000000ea196a2>] do_one_initcall+0x64/0x2e0\n    [<0000000008f727ce>] do_init_module+0x5c/0x260\n    [<000000003cdedab6>] __do_sys_finit_module+0xb5/0x120\n    [<00000000ad2f48c6>] do_syscall_64+0x33/0x40\n    [<00000000809526b5>] 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/fuse/virtio_fs.c"
               ],
               "versions": [
                  {
                     "version": "a62a8ef9d97d",
                     "lessThan": "310efc95c72c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a62a8ef9d97d",
                     "lessThan": "d19555ff225d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a62a8ef9d97d",
                     "lessThan": "9b9d60c0eb8a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a62a8ef9d97d",
                     "lessThan": "5116e79fc6e6",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a62a8ef9d97d",
                     "lessThan": "c79c5e017892",
                     "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/fuse/virtio_fs.c"
               ],
               "versions": [
                  {
                     "version": "5.4",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.4",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.118",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.36",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.11.20",
                     "lessThanOrEqual": "5.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12.3",
                     "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/310efc95c72c13faf855c692d19cd4d054d827c8"
            },
            {
               "url": "https://git.kernel.org/stable/c/d19555ff225d0896a33246a49279e6d578095f15"
            },
            {
               "url": "https://git.kernel.org/stable/c/9b9d60c0eb8ada99cce2a9ab5c15dffc523b01ae"
            },
            {
               "url": "https://git.kernel.org/stable/c/5116e79fc6e6725b8acdad8b7e928a83ab7b47e6"
            },
            {
               "url": "https://git.kernel.org/stable/c/c79c5e0178922a9e092ec8fed026750f39dcaef4"
            }
         ],
         "title": "virtiofs: fix memory leak in virtio_fs_probe()",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-46956",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}