CVE-2026-80678 (GCVE-0-2026-80678)
Vulnerability from cvelistv5
Published
2026-08-28 06:52
Modified
2026-10-16 19:26
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 Version: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 Version: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 Version: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 Version: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 Version: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 Version: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 |
||
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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