{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d60b479d177a5735b6b4db6ee5280ef6653f50e7"
            },
            {
              "fixed": "140cc839fbeb1ddb33a8da8811b716d88d3905b7"
            },
            {
              "fixed": "ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8"
            },
            {
              "fixed": "d3af62411e19752c663fe4f424dbf49d95a4cc7c"
            },
            {
              "fixed": "d92b8fac294b5f915c50e65ce4ae2262e53614ec"
            },
            {
              "fixed": "a437e3bf30e32846079e470c1ba5ee790bccdf89"
            },
            {
              "fixed": "9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f"
            },
            {
              "fixed": "5f73c8b33df9a605a591eab72d43a969600c1f8c"
            },
            {
              "fixed": "46ef85f854dfa9d5226b3c1c46493d79556c9589"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.5.0"
            },
            {
              "fixed": "5.10.252"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.202"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.165"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.128"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "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-2026-43163.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/bitmap: fix GPF in write_page caused by resize race\n\nA General Protection Fault occurs in write_page() during array resize:\nRIP: 0010:write_page+0x22b/0x3c0 [md_mod]\n\nThis is a use-after-free race between bitmap_daemon_work() and\n__bitmap_resize(). The daemon iterates over `bitmap-\u003estorage.filemap`\nwithout locking, while the resize path frees that storage via\nmd_bitmap_file_unmap(). `quiesce()` does not stop the md thread,\nallowing concurrent access to freed pages.\n\nFix by holding `mddev-\u003ebitmap_info.mutex` during the bitmap update.",
  "id": "CVE-2026-43163",
  "modified": "2026-07-08T05:36:49.400781819Z",
  "published": "2026-05-06T11:27:41.265Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/140cc839fbeb1ddb33a8da8811b716d88d3905b7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46ef85f854dfa9d5226b3c1c46493d79556c9589"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f73c8b33df9a605a591eab72d43a969600c1f8c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a437e3bf30e32846079e470c1ba5ee790bccdf89"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3af62411e19752c663fe4f424dbf49d95a4cc7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d92b8fac294b5f915c50e65ce4ae2262e53614ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43163.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43163"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "md/bitmap: fix GPF in write_page caused by resize race"
}