{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
            },
            {
              "fixed": "e5e0ae3237584ebef510366c4cb3d5cc7c22b610"
            },
            {
              "fixed": "249c831183fb806c8e3b14c7c4c1d2fb68cf37fb"
            },
            {
              "fixed": "ae59b3025609d5a0a39cf5b2b94e2467f6231573"
            },
            {
              "fixed": "35f6b3281efd44d19110574663bc17a610bc73b9"
            },
            {
              "fixed": "47dad9eea75d33212d3d2cea10e7ed6a1bfc0713"
            },
            {
              "fixed": "87c99a50e0fdc68a5b9b52a94d49452cd3ff02ca"
            },
            {
              "fixed": "17a08791d428885d00e510864283a7b839792368"
            },
            {
              "fixed": "4c788c6f921b22f9b6c3f316c4a071c05683e7de"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.12"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.86"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.27"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46023.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm mirror: fix integer overflow in create_dirty_log()\n\nThe argument count calculation in create_dirty_log() performs\n`*args_used = 2 + param_count` before validating against argc. When a\nuser provides a param_count close to UINT_MAX via the device mapper\ntable string, this unsigned addition wraps around to a small value,\ncausing the subsequent `argc \u003c *args_used` check to be bypassed.\n\nThe overflowed param_count is then passed as argc to dm_dirty_log_create(),\nwhere it can cause out-of-bounds reads on the argv array.\n\nFix by comparing param_count against argc - 2 before performing the\naddition, following the same pattern used by parse_features() in the\nsame file. Since argc \u003e= 2 is already guaranteed, the subtraction is\nsafe.",
  "id": "CVE-2026-46023",
  "modified": "2026-07-08T05:38:30.008442537Z",
  "published": "2026-05-27T12:56:28.756Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17a08791d428885d00e510864283a7b839792368"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/249c831183fb806c8e3b14c7c4c1d2fb68cf37fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35f6b3281efd44d19110574663bc17a610bc73b9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/47dad9eea75d33212d3d2cea10e7ed6a1bfc0713"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c788c6f921b22f9b6c3f316c4a071c05683e7de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87c99a50e0fdc68a5b9b52a94d49452cd3ff02ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae59b3025609d5a0a39cf5b2b94e2467f6231573"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5e0ae3237584ebef510366c4cb3d5cc7c22b610"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46023.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46023"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "dm mirror: fix integer overflow in create_dirty_log()"
}