{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7679ba6b36dbb300b757b672d6a32a606499e14b"
            },
            {
              "fixed": "687ccdf582169cd680aeaf24cc953807c4cd4345"
            },
            {
              "fixed": "12f2341b4c235d5593a433abac201c1c6725787f"
            },
            {
              "fixed": "ec05f51f1e65bce95528543eb73fda56fd201d94"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.9.0"
            },
            {
              "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-2026-46093.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/vmalloc: take vmap_purge_lock in shrinker\n\ndecay_va_pool_node() can be invoked concurrently from two paths:\n__purge_vmap_area_lazy() when pools are being purged, and the shrinker via\nvmap_node_shrink_scan().\n\nHowever, decay_va_pool_node() is not safe to run concurrently, and the\nshrinker path currently lacks serialization, leading to races and possible\nleaks.\n\nProtect decay_va_pool_node() by taking vmap_purge_lock in the shrinker\npath to ensure serialization with purge users.",
  "id": "CVE-2026-46093",
  "modified": "2026-07-15T01:49:15.386790984Z",
  "published": "2026-05-27T12:58:43.458Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/12f2341b4c235d5593a433abac201c1c6725787f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46093.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46093"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "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": "mm/vmalloc: take vmap_purge_lock in shrinker"
}