{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55"
            },
            {
              "fixed": "b4700c089a10f89de3a5149d57f8a58306458982"
            },
            {
              "fixed": "5026010110a5ad2268d8c23e1e286ab7c736f7ac"
            },
            {
              "fixed": "9eb80e54494ef1efef8a64bec4ffa672c9cf411e"
            },
            {
              "fixed": "912b0ee248c529a4f45d1e7f568dc1adddbf2a4a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.12.0"
            },
            {
              "fixed": "6.12.75"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.16"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43210.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: ring-buffer: Fix to check event length before using\n\nCheck the event length before adding it for accessing next index in\nrb_read_data_buffer(). Since this function is used for validating\npossibly broken ring buffers, the length of the event could be broken.\nIn that case, the new event (e + len) can point a wrong address.\nTo avoid invalid memory access at boot, check whether the length of\neach event is in the possible range before using it.",
  "id": "CVE-2026-43210",
  "modified": "2026-07-15T01:49:18.660876185Z",
  "published": "2026-05-06T11:28:13.609Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5026010110a5ad2268d8c23e1e286ab7c736f7ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/912b0ee248c529a4f45d1e7f568dc1adddbf2a4a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9eb80e54494ef1efef8a64bec4ffa672c9cf411e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4700c089a10f89de3a5149d57f8a58306458982"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43210.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43210"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "tracing: ring-buffer: Fix to check event length before using"
}