{
  "cveId": "CVE-2022-48862",
  "url": "https://patchblox.com/security/cve/CVE-2022-48862",
  "summary": "CVE-2022-48862 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48862, 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:  vhost: fix hung thread due to erroneous iotlb en...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  vhost: fix hung thread due to erroneous iotlb entries  In vhost_iotlb_add_range_ctx(), range size can overflow to 0 when start is 0 and last is ULONG_MAX. One instance where it can happen is when userspace sends an IOTLB message with iova=size=uaddr=0 (vhost_process_iotlb_msg). So, an entry with size = 0, start = 0, last = ULONG_MAX ends up in the iotlb. Next time a packet is sent, iotlb_access_ok() loops indefinitely due to that erroneous entry.  \tCall Trace: \t \u003CTASK\u003E \t iotlb_access_ok\u002B0x21b/0x3e0 drivers/vhost/vhost.c:1340 \t vq_meta_prefetch\u002B0xbc/0x280 drivers/vhost/vhost.c:1366 \t vhost_transport_do_send_pkt\u002B0xe0/0xfd0 drivers/vhost/vsock.c:104 \t vhost_worker\u002B0x23d/0x3d0 drivers/vhost/vhost.c:372 \t kthread\u002B0x2e9/0x3a0 kernel/kthread.c:377 \t ret_from_fork\u002B0x1f/0x30 arch/x86/entry/entry_64.S:295 \t \u003C/TASK\u003E  Reported by syzbot at: \thttps://syzkaller.appspot.com/bug?extid=0abd373e2e50d704db87  To fix this, do two things:  1. Return -EINVAL in vhost_chr_write_iter() when userspace asks to map    a range with size 0. 2. Fix vhost_iotlb_add_range_ctx() to handle the range [0, ULONG_MAX]    by splitting it into two entries.",
  "published": "2024-07-16T13:15:13Z",
  "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": 0.00209,
  "epssPercentile": 0.11157,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.16.18-1",
      "fix": "DEBIAN-CVE-2022-48862",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48862",
      "released": "2024-07-16T13:15:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.16.18-1",
      "fix": "DEBIAN-CVE-2022-48862",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48862",
      "released": "2024-07-16T13:15:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.16.18-1",
      "fix": "DEBIAN-CVE-2022-48862",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48862",
      "released": "2024-07-16T13:15:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}