{
  "cveId": "CVE-2026-80678",
  "url": "https://patchblox.com/security/cve/CVE-2026-80678",
  "summary": "CVE-2026-80678 is fixed in 31 products on 1 platform, first by DEBIAN-CVE-2026-80678, released August 29, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "i2c: imx: Fix slave registration race and error handling",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  i2c: imx: Fix slave registration race and error handling  In i2c_imx_reg_slave(), the slave pointer was assigned before pm_runtime_resume_and_get().  If pm_runtime_resume_and_get() failed, the error path returned without clearing i2c_imx-\u003Eslave, leaving it non-NULL and causing all subsequent registration attempts to fail with -EBUSY.  Additionally, because this driver uses a shared IRQ, the interrupt handler i2c_imx_isr() can execute concurrently and, after acquiring slave_lock, dereference i2c_imx-\u003Eslave.  The previous fix attempt added a lockless i2c_imx-\u003Eslave = NULL on the error path, but that could race with the ISR under the lock and still cause a NULL pointer dereference.  Fix both issues by deferring the assignment of i2c_imx-\u003Eslave and i2c_imx-\u003Elast_slave_event to after a successful resume, and by performing the assignment inside the slave_lock critical section. This guarantees that the slave pointer is never left stale on the error path and is always valid when observed by the interrupt handler.",
  "published": "2026-08-28T08:16:53Z",
  "severity": "Moderate",
  "cvss": 8.4,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00142,
  "epssPercentile": 0.03508,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80678",
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