{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b9a66cd5ccbb9fade15d0e427e19470d8ad35b75"
            },
            {
              "fixed": "34861bdc0c0196b6c2dd48f7454029407704ff6e"
            },
            {
              "fixed": "6922db250422a0dfee34de322f86b7a73d713d33"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23432.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmshv: Fix use-after-free in mshv_map_user_memory error path\n\nIn the error path of mshv_map_user_memory(), calling vfree() directly on\nthe region leaves the MMU notifier registered. When userspace later unmaps\nthe memory, the notifier fires and accesses the freed region, causing a\nuse-after-free and potential kernel panic.\n\nReplace vfree() with mshv_partition_put() to properly unregister\nthe MMU notifier before freeing the region.",
  "id": "CVE-2026-23432",
  "modified": "2026-07-08T05:36:30.178010094Z",
  "published": "2026-04-03T15:15:18.061Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34861bdc0c0196b6c2dd48f7454029407704ff6e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6922db250422a0dfee34de322f86b7a73d713d33"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23432.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23432"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "mshv: Fix use-after-free in mshv_map_user_memory error path"
}