VYPR
← All advisories
High severity7.8NVD Advisory· Published Jul 19, 2026· Updated Oct 16, 2026

CVE-2026-53400

CVE-2026-53400

Description

In the Linux kernel, the following vulnerability has been resolved:

i2c: core: fix adapter registration race

Adapters can be looked up based on their id using i2c_get_adapter() which takes a reference to the embedded struct device.

Make sure that the adapter (including its struct device) has been initialised before adding it to the IDR to avoid accessing uninitialised data which could, for example, lead to NULL-pointer dereferences or use-after-free.

Note that the i2c-dev chardev, which is registered from a bus notifier, currently uses i2c_get_adapter() so the adapter needs to be added to the IDR before registration.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

17

Patches

Vulnerability mechanics

References

10

News mentions

1