{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-43212",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-43212"
  ],
  "published": "2026-05-06T11:29:17Z",
  "summary": "LoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE\n\nThe arch definition of cpumask_of_node() cannot handle NUMA_NO_NODE -\nwhich is a valid index - so add a check for this.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.165",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43212"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b5bf05e05cdf489a04137e4da407de9d4cca5295"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bb1a54f7f011f19ed936632698eae574e0b91063"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/92adfb707beec0fe956424373654a70aad35ea13"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/61a56df2fbaad3a4d00f0c6a904b5d1ee8982eb4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1d8f2f024801019d85159a020b72a4424b46bcf4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/94b0c831eda778ae9e4f2164a8b3de485d8977bb"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T13:16:28Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - The vulnerable LoongArch macro is reached from local kernel interfaces and device/PMU/sysfs-style paths, not by remote network input.\nAC:L - Supplying or encountering NUMA_NO_NODE leads directly to an out-of-bounds cpus_on_node[-1] access; no attacker-uncontrolled race or timing condition is required.\nPR:L - A basic local user can plausibly trigger exposed local inspection/control paths once an affected device or subsystem instance exists. Where a specific path is admin-only, the macro bug itself is still reachable through normal local kernel-facing interfaces, so the higher-severity PR:L is selected.\nUI:N - No victim user action is needed beyond the attacker invoking the local interface.\nS:U - The impact remains within the kernel and its managed resources; there is no guest-to-host, IOMMU, or other separate security authority boundary crossing.\nC:H - The bug is an out-of-bounds read of a cpumask object before the cpus_on_node array, and cpumask data may be exposed or used through sysfs/perf-style paths.\nI:H - The invalid cpumask pointer can be consumed by cpumask helpers and affinity-setting paths, and an array-underflow kernel memory access is treated as potentially enabling corruption or control of kernel decisions.\nA:H - Invalid cpumask access can produce UBSAN/oops/panic behavior or destabilize kernel CPU-affinity handling, giving high availability impact."
    }
  }
}