{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7a1d220ccb0cc2b808eb176fb05bf55a38179f3f"
            },
            {
              "fixed": "bed1fc32e0eb653806fa98afcf55f9a311fc4ce2"
            },
            {
              "fixed": "b0b66aae8a94c3663d47e4000b0e81b89ce32186"
            },
            {
              "fixed": "873e919e3101063a7a75989510ccfc125a4391cf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.3.0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64213.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (lm90) Add lock protection to lm90_alert\n\nSashiko reports:\n\nlm90_alert() executes in the smbus alert context and calls\nlm90_update_confreg() to disable the hardware alert line, without\nacquiring hwmon_lock.\n\nConcurrently, sysfs write operations (such as lm90_write_convrate) hold\nthe hwmon_lock, temporarily modify data-\u003econfig, and then restore it.\n\nIf an alert interrupt occurs concurrently with a sysfs write, the sysfs\npath will overwrite the alert handler's modifications to data-\u003econfig\nand the hardware register.\n\nThis unintentionally re-enables the hardware alert line while the alarm is\nstill active, causing an interrupt storm.\n\nAdd the missing lock to lm90_alert() to solve the problem.",
  "id": "CVE-2026-64213",
  "modified": "2026-07-27T03:56:21.051816380Z",
  "published": "2026-07-24T15:23:02.987Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/873e919e3101063a7a75989510ccfc125a4391cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b0b66aae8a94c3663d47e4000b0e81b89ce32186"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bed1fc32e0eb653806fa98afcf55f9a311fc4ce2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64213.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64213"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "hwmon: (lm90) Add lock protection to lm90_alert"
}