{
  "cveId": "CVE-2021-47631",
  "url": "https://patchblox.com/security/cve/CVE-2021-47631",
  "summary": "CVE-2021-47631 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47631, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ARM: davinci: da850-evm: Avoid NULL pointer dere...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ARM: davinci: da850-evm: Avoid NULL pointer dereference  With newer versions of GCC, there is a panic in da850_evm_config_emac() when booting multi_v5_defconfig in QEMU under the palmetto-bmc machine:  Unable to handle kernel NULL pointer dereference at virtual address 00000020 pgd = (ptrval) [00000020] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT ARM Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 5.15.0 #1 Hardware name: Generic DT based system PC is at da850_evm_config_emac\u002B0x1c/0x120 LR is at do_one_initcall\u002B0x50/0x1e0  The emac_pdata pointer in soc_info is NULL because davinci_soc_info only gets populated on davinci machines but da850_evm_config_emac() is called on all machines via device_initcall().  Move the rmii_en assignment below the machine check so that it is only dereferenced when running on a supported SoC.",
  "published": "2025-02-26T06:37:04Z",
  "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": 0.00244,
  "epssPercentile": 0.15638,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.17.6-1",
      "fix": "DEBIAN-CVE-2021-47631",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47631",
      "released": "2025-02-26T06:37:04Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.17.6-1",
      "fix": "DEBIAN-CVE-2021-47631",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47631",
      "released": "2025-02-26T06:37:04Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.17.6-1",
      "fix": "DEBIAN-CVE-2021-47631",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47631",
      "released": "2025-02-26T06:37:04Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}