{
  "cveId": "CVE-2021-47202",
  "url": "https://patchblox.com/security/cve/CVE-2021-47202",
  "summary": "CVE-2021-47202 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47202, released April 10, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  thermal: Fix NULL pointer dereferences in of_the...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  thermal: Fix NULL pointer dereferences in of_thermal_ functions  of_parse_thermal_zones() parses the thermal-zones node and registers a thermal_zone device for each subnode. However, if a thermal zone is consuming a thermal sensor and that thermal sensor device hasn\u0027t probed yet, an attempt to set trip_point_*_temp for that thermal zone device can cause a NULL pointer dereference. Fix it.   console:/sys/class/thermal/thermal_zone87 # echo 120000 \u003E trip_point_0_temp  ...  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020  ...  Call trace:   of_thermal_set_trip_temp\u002B0x40/0xc4   trip_point_temp_store\u002B0xc0/0x1dc   dev_attr_store\u002B0x38/0x88   sysfs_kf_write\u002B0x64/0xc0   kernfs_fop_write_iter\u002B0x108/0x1d0   vfs_write\u002B0x2f4/0x368   ksys_write\u002B0x7c/0xec   __arm64_sys_write\u002B0x20/0x30   el0_svc_common.llvm.7279915941325364641\u002B0xbc/0x1bc   do_el0_svc\u002B0x28/0xa0   el0_svc\u002B0x14/0x24   el0_sync_handler\u002B0x88/0xec   el0_sync\u002B0x1c0/0x200  While at it, fix the possible NULL pointer dereference in other functions as well: of_thermal_get_temp(), of_thermal_set_emul_temp(), of_thermal_get_trend().",
  "published": "2024-04-10T19:15:48Z",
  "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": 0.00237,
  "epssPercentile": 0.14835,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.15.5-1",
      "fix": "DEBIAN-CVE-2021-47202",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47202",
      "released": "2024-04-10T19:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.15.5-1",
      "fix": "DEBIAN-CVE-2021-47202",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47202",
      "released": "2024-04-10T19:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.15.5-1",
      "fix": "DEBIAN-CVE-2021-47202",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47202",
      "released": "2024-04-10T19:15:48Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}