{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer\n\nDriver's probe allocates memory for RX FIFO (port->rx_fifo) based on\ndefault RX FIFO depth, e.g. 16.  Later during serial startup the\nqcom_geni_serial_port_setup() updates the RX FIFO depth\n(port->rx_fifo_depth) to match real device capabilities, e.g. to 32.\n\nThe RX UART handle code will read \"port->rx_fifo_depth\" number of words\ninto \"port->rx_fifo\" buffer, thus exceeding the bounds.  This can be\nobserved in certain configurations with Qualcomm Bluetooth HCI UART\ndevice and KASAN:\n\n  Bluetooth: hci0: QCA Product ID   :0x00000010\n  Bluetooth: hci0: QCA SOC Version  :0x400a0200\n  Bluetooth: hci0: QCA ROM Version  :0x00000200\n  Bluetooth: hci0: QCA Patch Version:0x00000d2b\n  Bluetooth: hci0: QCA controller version 0x02000200\n  Bluetooth: hci0: QCA Downloading qca/htbtfw20.tlv\n  bluetooth hci0: Direct firmware load for qca/htbtfw20.tlv failed with error -2\n  Bluetooth: hci0: QCA Failed to request file: qca/htbtfw20.tlv (-2)\n  Bluetooth: hci0: QCA Failed to download patch (-2)\n  ==================================================================\n  BUG: KASAN: slab-out-of-bounds in handle_rx_uart+0xa8/0x18c\n  Write of size 4 at addr ffff279347d578c0 by task swapper/0/0\n\n  CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rt5-00350-gb2450b7e00be-dirty #26\n  Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\n  Call trace:\n   dump_backtrace.part.0+0xe0/0xf0\n   show_stack+0x18/0x40\n   dump_stack_lvl+0x8c/0xb8\n   print_report+0x188/0x488\n   kasan_report+0xb4/0x100\n   __asan_store4+0x80/0xa4\n   handle_rx_uart+0xa8/0x18c\n   qcom_geni_serial_handle_rx+0x84/0x9c\n   qcom_geni_serial_isr+0x24c/0x760\n   __handle_irq_event_percpu+0x108/0x500\n   handle_irq_event+0x6c/0x110\n   handle_fasteoi_irq+0x138/0x2cc\n   generic_handle_domain_irq+0x48/0x64\n\nIf the RX FIFO depth changes after probe, be sure to resize the buffer."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/tty/serial/qcom_geni_serial.c"
               ],
               "versions": [
                  {
                     "version": "f9d690b6ece7",
                     "lessThan": "894681682dbe",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f9d690b6ece7",
                     "lessThan": "cb53a3366eb2",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f9d690b6ece7",
                     "lessThan": "fd524ca7fe45",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f9d690b6ece7",
                     "lessThan": "b8caf69a6946",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/tty/serial/qcom_geni_serial.c"
               ],
               "versions": [
                  {
                     "version": "5.7",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.7",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.165",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.90",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.8",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.2",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/894681682dbefdad917b88f86cde1069140a047a"
            },
            {
               "url": "https://git.kernel.org/stable/c/cb53a3366eb28fed67850c80afa52075bb71a38a"
            },
            {
               "url": "https://git.kernel.org/stable/c/fd524ca7fe45b8a06dca2dd546d62684a9768f95"
            },
            {
               "url": "https://git.kernel.org/stable/c/b8caf69a6946e18ffebad49847e258f5b6d52ac2"
            }
         ],
         "title": "tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2022-48871",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}