{
  "cveId": "CVE-2022-48871",
  "url": "https://patchblox.com/security/cve/CVE-2022-48871",
  "summary": "CVE-2022-48871 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48871, released August 21, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  tty: serial: qcom-geni-serial: fix slab-out-of-b...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer  Driver\u0027s probe allocates memory for RX FIFO (port-\u003Erx_fifo) based on default RX FIFO depth, e.g. 16.  Later during serial startup the qcom_geni_serial_port_setup() updates the RX FIFO depth (port-\u003Erx_fifo_depth) to match real device capabilities, e.g. to 32.  The RX UART handle code will read \u0022port-\u003Erx_fifo_depth\u0022 number of words into \u0022port-\u003Erx_fifo\u0022 buffer, thus exceeding the bounds.  This can be observed in certain configurations with Qualcomm Bluetooth HCI UART device and KASAN:    Bluetooth: hci0: QCA Product ID   :0x00000010   Bluetooth: hci0: QCA SOC Version  :0x400a0200   Bluetooth: hci0: QCA ROM Version  :0x00000200   Bluetooth: hci0: QCA Patch Version:0x00000d2b   Bluetooth: hci0: QCA controller version 0x02000200   Bluetooth: hci0: QCA Downloading qca/htbtfw20.tlv   bluetooth hci0: Direct firmware load for qca/htbtfw20.tlv failed with error -2   Bluetooth: hci0: QCA Failed to request file: qca/htbtfw20.tlv (-2)   Bluetooth: hci0: QCA Failed to download patch (-2)   ==================================================================   BUG: KASAN: slab-out-of-bounds in handle_rx_uart\u002B0xa8/0x18c   Write of size 4 at addr ffff279347d578c0 by task swapper/0/0    CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rt5-00350-gb2450b7e00be-dirty #26   Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)   Call trace:    dump_backtrace.part.0\u002B0xe0/0xf0    show_stack\u002B0x18/0x40    dump_stack_lvl\u002B0x8c/0xb8    print_report\u002B0x188/0x488    kasan_report\u002B0xb4/0x100    __asan_store4\u002B0x80/0xa4    handle_rx_uart\u002B0xa8/0x18c    qcom_geni_serial_handle_rx\u002B0x84/0x9c    qcom_geni_serial_isr\u002B0x24c/0x760    __handle_irq_event_percpu\u002B0x108/0x500    handle_irq_event\u002B0x6c/0x110    handle_fasteoi_irq\u002B0x138/0x2cc    generic_handle_domain_irq\u002B0x48/0x64  If the RX FIFO depth changes after probe, be sure to resize the buffer.",
  "published": "2024-08-21T07:15:04Z",
  "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": 0.00349,
  "epssPercentile": 0.28663,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.8-1",
      "fix": "DEBIAN-CVE-2022-48871",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48871",
      "released": "2024-08-21T07:15:04Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.8-1",
      "fix": "DEBIAN-CVE-2022-48871",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48871",
      "released": "2024-08-21T07:15:04Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.8-1",
      "fix": "DEBIAN-CVE-2022-48871",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48871",
      "released": "2024-08-21T07:15:04Z"
    }
  ],
  "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"
  }
}