{
  "cveId": "CVE-2026-64083",
  "url": "https://patchblox.com/security/cve/CVE-2026-64083",
  "summary": "CVE-2026-64083 is fixed in 16 products on 1 platform, first by DEBIAN-CVE-2026-64083, released July 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  hwmon: (pmbus/adm1266) reject short block-read r...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  hwmon: (pmbus/adm1266) reject short block-read responses in the GPIO accessors  adm1266_gpio_get() and adm1266_gpio_get_multiple() both compose the pin-status word as  \tpins_status = read_buf[0] \u002B (read_buf[1] \u003C\u003C 8);  right after i2c_smbus_read_block_data(), guarding only against an error return.  A well-behaved device returns 2 bytes for GPIO_STATUS/PDIO_STATUS, but the helper happily reports a 0- or 1-byte response too.  If the device returns 0 bytes, both read_buf slots are uninitialized stack memory; if it returns 1 byte, read_buf[1] is.  The composed value then flows through set_bit() into the caller\u0027s *bits in adm1266_gpio_get_multiple(), or into the return value of adm1266_gpio_get(), and ends up in userspace via gpiolib (sysfs and the char-dev ioctls).  That leaks a few bits of kernel stack per request on any device whose firmware glitch, bus error, or hostile slave produces a short block-read response.  Add the missing length check to both call sites and surface a short response as -EIO.",
  "published": "2026-07-19T16:17:48Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00128,
  "epssPercentile": 0.02478,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}