{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55"
            },
            {
              "fixed": "bc77986f3cb7476637052edf2d87137fa39f153d"
            },
            {
              "fixed": "d9942396845fef2369478c157b26738fe07142f6"
            },
            {
              "fixed": "f1547779402c4cd67755c33616b7203baa88420b"
            }
          ],
          "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": "6.18.16"
            }
          ],
          "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-2026-43272.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Fix possible dereference of uninitialized pointer\n\nThere is a pointer head_page in rb_meta_validate_events() which is not\ninitialized at the beginning of a function. This pointer can be dereferenced\nif there is a failure during reader page validation. In this case the control\nis passed to \"invalid\" label where the pointer is dereferenced in a loop.\n\nTo fix the issue initialize orig_head and head_page before calling\nrb_validate_buffer.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.",
  "id": "CVE-2026-43272",
  "modified": "2026-07-15T01:49:17.620964131Z",
  "published": "2026-05-06T11:28:56.162Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc77986f3cb7476637052edf2d87137fa39f153d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9942396845fef2369478c157b26738fe07142f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1547779402c4cd67755c33616b7203baa88420b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43272.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43272"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "ring-buffer: Fix possible dereference of uninitialized pointer"
}