{
  "cveId": "CVE-2022-48809",
  "url": "https://patchblox.com/security/cve/CVE-2022-48809",
  "summary": "CVE-2022-48809 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48809, released July 16, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: fix a memleak when uncloning an skb dst and...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: fix a memleak when uncloning an skb dst and its metadata  When uncloning an skb dst and its associated metadata, a new dst\u002Bmetadata is allocated and later replaces the old one in the skb. This is helpful to have a non-shared dst\u002Bmetadata attached to a specific skb.  The issue is the uncloned dst\u002Bmetadata is initialized with a refcount of 1, which is increased to 2 before attaching it to the skb. When tun_dst_unclone returns, the dst\u002Bmetadata is only referenced from a single place (the skb) while its refcount is 2. Its refcount will never drop to 0 (when the skb is consumed), leading to a memory leak.  Fix this by removing the call to dst_hold in tun_dst_unclone, as the dst\u002Bmetadata refcount is already 1.",
  "published": "2024-07-16T12:15:05Z",
  "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": 0.00284,
  "epssPercentile": 0.21054,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.16.10-1",
      "fix": "DEBIAN-CVE-2022-48809",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48809",
      "released": "2024-07-16T12:15:05Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.16.10-1",
      "fix": "DEBIAN-CVE-2022-48809",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48809",
      "released": "2024-07-16T12:15:05Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.16.10-1",
      "fix": "DEBIAN-CVE-2022-48809",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48809",
      "released": "2024-07-16T12:15:05Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}