{
  "cveId": "CVE-2021-46956",
  "url": "https://patchblox.com/security/cve/CVE-2021-46956",
  "summary": "CVE-2021-46956 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-46956, released February 27, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  virtiofs: fix memory leak in virtio_fs_probe()...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  virtiofs: fix memory leak in virtio_fs_probe()  When accidentally passing twice the same tag to qemu, kmemleak ended up reporting a memory leak in virtiofs.  Also, looking at the log I saw the following error (that\u0027s when I realised the duplicated tag):    virtiofs: probe of virtio5 failed with error -17  Here\u0027s the kmemleak log for reference:  unreferenced object 0xffff888103d47800 (size 1024):   comm \u0022systemd-udevd\u0022, pid 118, jiffies 4294893780 (age 18.340s)   hex dump (first 32 bytes):     00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........     ff ff ff ff ff ff ff ff 80 90 02 a0 ff ff ff ff  ................   backtrace:     [\u003C000000000ebb87c1\u003E] virtio_fs_probe\u002B0x171/0x7ae [virtiofs]     [\u003C00000000f8aca419\u003E] virtio_dev_probe\u002B0x15f/0x210     [\u003C000000004d6baf3c\u003E] really_probe\u002B0xea/0x430     [\u003C00000000a6ceeac8\u003E] device_driver_attach\u002B0xa8/0xb0     [\u003C00000000196f47a7\u003E] __driver_attach\u002B0x98/0x140     [\u003C000000000b20601d\u003E] bus_for_each_dev\u002B0x7b/0xc0     [\u003C00000000399c7b7f\u003E] bus_add_driver\u002B0x11b/0x1f0     [\u003C0000000032b09ba7\u003E] driver_register\u002B0x8f/0xe0     [\u003C00000000cdd55998\u003E] 0xffffffffa002c013     [\u003C000000000ea196a2\u003E] do_one_initcall\u002B0x64/0x2e0     [\u003C0000000008f727ce\u003E] do_init_module\u002B0x5c/0x260     [\u003C000000003cdedab6\u003E] __do_sys_finit_module\u002B0xb5/0x120     [\u003C00000000ad2f48c6\u003E] do_syscall_64\u002B0x33/0x40     [\u003C00000000809526b5\u003E] entry_SYSCALL_64_after_hwframe\u002B0x44/0xae",
  "published": "2024-02-27T19:04:06Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00232,
  "epssPercentile": 0.14157,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-46956",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-46956",
      "released": "2024-02-27T19:04:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-46956",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-46956",
      "released": "2024-02-27T19:04:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-46956",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-46956",
      "released": "2024-02-27T19:04:06Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}