{
  "cveId": "CVE-2021-47291",
  "url": "https://patchblox.com/security/cve/CVE-2021-47291",
  "summary": "CVE-2021-47291 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47291, released May 21, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ipv6: fix another slab-out-of-bounds in fib6_nh_...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions  While running the self-tests on a KASAN enabled kernel, I observed a slab-out-of-bounds splat very similar to the one reported in commit 821bbf79fe46 (\u0022ipv6: Fix KASAN: slab-out-of-bounds Read in  fib6_nh_flush_exceptions\u0022).  We additionally need to take care of fib6_metrics initialization failure when the caller provides an nh.  The fix is similar, explicitly free the route instead of calling fib6_info_release on a half-initialized object.",
  "published": "2024-05-21T15:15:17Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.0025,
  "epssPercentile": 0.16372,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.14.6-1",
      "fix": "DEBIAN-CVE-2021-47291",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47291",
      "released": "2024-05-21T15:15:17Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.14.6-1",
      "fix": "DEBIAN-CVE-2021-47291",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47291",
      "released": "2024-05-21T15:15:17Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.14.6-1",
      "fix": "DEBIAN-CVE-2021-47291",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47291",
      "released": "2024-05-21T15:15:17Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}