{"apiVersion":"1.0","identifier":"CVE-2026-80678","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->slave, 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->slave. The previous fix attempt added a lockless i2c_imx->slave = 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->slave and i2c_imx->last_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.","publishedAt":"2026-08-28T08:16:53","lastModifiedAt":"2026-08-28T08:16:53","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80678","cvssScore":null,"cvssVector":"Pending","epssProbability":0.00172,"riskScore":0,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-80678","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-80678","en":"https://www.redsauce.net/en/cves/CVE-2026-80678","fr":"https://www.redsauce.net/fr/cves/CVE-2026-80678","pt":"https://www.redsauce.net/pt/cves/CVE-2026-80678","de":"https://www.redsauce.net/de/cves/CVE-2026-80678","sk":"https://www.redsauce.net/sk/cves/CVE-2026-80678","el":"https://www.redsauce.net/el/cves/CVE-2026-80678"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-80678"}}